Student Leaders Assembly Essay Example for Free

Student Leaders Assembly EssaySunday, August 15 2010, marked the first day of the Student Leaders Assembly of both the High direct and College departments of the antithetic fatigue Bosco schools who participated in the utter event. They were composed of the student council and the assorted officers of the clubs and organizations of both levels in the different schools. It was a truly wonderful experience for them since it fostered team building and getting to know each another(prenominal) again after a long time. The event was held at sire Bosco Tarlac, since they were selected as the host of the said event.By the time the participants arrived at Don Bosco Tarlac, they were asked to register their names and put their bags in their assigned rooms. aft(prenominal) the facilitators mentioned the rules, they already felt at home in the school since it brings an aura per se, of their school, since it the place was in addition a Don Bosco school. There was a time when the pa rticipants were given time to freshen up onward they were legitimate to go to the gym for the program to take place. The participants were asked to seat at a certain group tally to the number designated on their IDs.The program started with the raising of the Bosconian Insignias in the different Don Bosco schools while having someone who seemed to be a Bosconian bunso sing the song Di Ka Nag-iisa. It was a very breathtaking experience, because the people were astounded at what a Bosconian bunso could do, at such a young age. The raising of the insignias was followed by the singing of the National Anthem and the disruption prayer entitled The Prayer, led by the two selected participants representing Don Bosco Technical College, Mandaluyong. The opening ceremonies of the different insignias ended with a basking applause from the participants.The actual program started with the game called Blind Barthemeus, where a leader would be in charge of asking the other participants some que stions while the rest are blindfolded. after(prenominal) getting to know each other as a group, the next game called the Game of Life, was initiated shortly. The instructions were given, and a map of some sort was distri saveed to each group. They were assigned to make a 3-feet tall rise made of the materials they are going to gather at the different places that were designated in the map, from barbecue sticks and chewing glue to popsicle sticks and lumps of clay.Everything was going well, but after a short while, the rain fell down, slowly but surely. The participants didnt stop, and so did the rain. But when the rain poured down heavily, most of them fled to the nearest building to take grasp from the rain. This goes to show that Bosconians wont be easily discouraged to abandon their duties just because of some kid distractions or disruptions. The rain still poured down heavily and the PA announced that all Bosconians should dry themselves and dull up, since most, if not al l the participants, got wet during the game.The game was suspended, but they were asked to hold on to their materials for later use. It was nighttime when the participants entire perking up and eating dinner. They were requested to go to the Big Chapel for the continuation of the program, since the gym was flooded. The program resumed, and at that time, Mr. JC Delos Reyes was the speaker. He talked about the roles of a leader and what leaders should really do and symbolize. After the talk, the different Don Bosco schools presented their dance numbers and presentations.Everyone performed well. One of the performers even performed an impromptu script, because of the delayed performance of the whole group. Nevertheless, it was a lo and see sight to see, since everyone gave it their best shot in the presentations. After the dance presentations, the students were asked to go outside the chapel for the fireworks display. After a while, numerous flashing and colorful displays of firework s amazed the participants during that night. Finally, the students were asked to go to their designated rooms and sleep.It was morning when one of the songs of Don Bosco was played to wake the participants up, although some already did way before the PA played the song. Some took a bath, while others washed up to feel fresh. Breakfast was soon served, and the mass was then celebrated afterwards. The music ministry was led by the students of Don Bosco Technical College. After the mass, the principal, Fr. Jay, gave the closing remarks and then dismissed all the students. Of course, the merienda was served before they all left the school. Everyone left knowing that they learned something not only from their school but also from someone from a different setting.It is true that the best teacher that anyone could have is experience, but it really depends on the person. If the person is eager to learn, then he would strive to become successful by learning from his mistakes in the past, th erefore making use of his experiences. If the person is unwilling, then his experiences would mean nothing since he did not pass what he had encountered in the past. That goes the same with the participants back then. They not only learned the true meaning of beingness a leader and what it takes to be one, they also learned the value of experiences through communication and camaraderie.

We Can Never Can Tell Essay Example for Free

We Can neer Can Tell EssayIts period of playny how things unceasingly hitch out different than how we need or want them to. It becomes funny eventually hardly for the most part, its hard. In some cases, awful at first.I am always caught saying we can never can tell. Sometimes, its just my excuse and sometimes, I just want saying it because it sounds nice but there is verity to it. Whoever knows what get out happen bordering? Whatever is next the next time, next person, next tragedy, next tear, next smile. We can plan, predict, speculate, estimate but truth is, we really can never can tell. Otherwise, wheres the fun in that? is what they say.Honestly though, dont you sometimes wish to know whats next for you in life? Much more, where argon all of these life struggles and adventures leading us to? Where am I expiration to end up? With who?Its not like you want to impatiently fast-forward to the end of your life but you just want to know if in the end of all these cris is and drama, everything is going to be alfckingright just like what they always tell you when youre shitfckin depressed. You just want to know if having to struggle today means having a bright future tomorrow or will it be a recurring struggle, or worse, an without end pit of struggle.Its not fair nor is it right to question life and its purpose but wouldnt that be nice? A little bit of assurance would be nice.Lucky are those who gain their future stable and planned out perfectly fine even before they were born. Trust breed babies, children or relatives of influential people, political dynasties, celebrity children, children of multimillionaires, even those who were born with beautiful genes, because that actually makes their lives easier (feel free to disagree).*** cheer dont refer or send me a copy of The Purpose Driven breeding because somebody already did, thank you.On a semi-irrelevant note (depending on how you comprehend it), I look at learned that the lack of choices m akes you a better person or to put it more rationally, makes you better at what you do. Giving yourself choices is tempting yourself to easily quit one decision and do on to the other quite of making things work whereas when youre stuck with only one, you contrive no other choice but to move forward, make it last, make it work, therefore you strive to be better.Having choices opens up opportunities for comparison, and comparison never leads to contentment and happiness, from what I know. Having a job while knowing that there are still hundreds of available other jobs will make it hard for you to value and stay in your current job (pardon my confusing sentence). You will always wonder what the others has to offer and how you could be wasting your time doing what you think you dont deserve, instead of work hard to succeed in it and make things better.Having a girlfriend while knowing that there are still hundreds of available other girls who could be sexier and more attractive tha n her will make it hard for you to be faithful and contented. Especially when youre fully aware that youre a good-looking sonuvabitch who thinks you can have any girl you want. You will always wonder if there is someone or something better for you wherefore disregarding the notion that you may actually have in your hands the best choice. Am I right or am I right?Choices are fallbacks. Its easy to quit, to let go, to turn around, to give up, to not try hard, when you know you have a fallback that conveniently catches you anytime, everytime. Contentment is inversely proportional to our number of choices (and I realized that just now). The more choices, the harder for us to be contented and happy. whole tone free to disagree.

English Literature Antigone Ismene Thebes

English literary works Antigone Ismene ThebesAntigone Ismene ThebesInductive essay of AntigoneIn the play Antigone, written by Sophocels, there are many complications. The about important event is the put to finising of Antigones two pals, Eteocles and Polynices. It was the main inspiration for the whole play. It all starts aft(prenominal) King Oedipus was banished from the city of Thebes after he knows that he has murdered his father, his younger son Eteocles declares to be the world-beater, banishing his former(a) br new(prenominal) Polyneices. Polyneices then attacks Thebes with a huge army, but none of the two brothers wins the war because they both kill each(prenominal) other in combat. Creon then declares the kingdom of Thebes, and he decides that Eteocles should be buried and maintained as a hero while Polyneices ashes shouldnt be honored, but it should be thrown in the streets of Thebes left for dogs and birds to be eaten in humiliation. Creon decides that the pun ishment for rendering to bury the body of Polyneices give be death. Antigone, Eteocles and Polynices child, insists that her brothers body must be buried so that his spirit can rest in peace, in malignity of the cautious advice of her younger sister, Ismene. She goes to the battleground, pouring sand over Polyneices body and performing burial rites. After that the guards discovers that psyche was trying to bury the body, they uncover the dust from the body, and they starts to look for who does that. Antigone comes back insisting on burying her brothers body .She finally allows herself to be captured after coming out of hiding when some guards try to uncover the body again, and a rebellious Antigone is brought to Creon. He decides to execute simply Antigone since Ismenes is innocent and Antigone is sent outback(a) of Thebes to starve to death in a cave. Even though Antigone was nothing but a female child left alone, she faces many obstacles by herself to do what she believes it is right without any concerns about the consequences.The first obstacle that faces Antigone was her sister, Ismene. They were the only two family members left after their fathers death and their two brothers shameful war against each other and killing each other in the battlefield. Instead of supporting her sister, and trying to keep whats left of the family together, Ismene abandons Antigone and tries to convince her to obey the kings orders. The author quotes Ismene saying The worst of all if we ill-use the laws and override the fixed decree of the throne, its power- we must be sensible. Remember we are women, were not natural to contend with men (Sophocles 1144). It is clear that Ismene is so frightened of Antigones last to bury her brother Polyneices. It is likewise clear how Creon, the king, put his fear in his peoples minds so he will has sound control over his kingdom. Antigone doesnt worry about Creons punishment and decides to continue. The author quotes her answer ing her sister So, do as you like, whatever suits you best- Ill bury him myself. And even if I die in the act, that death will be a glory. (Sophocles 1144). This quote shows how determined Antigone is to bury her brother without having any concerns about the result. It also shows how she considers the death a glory to her for doing whats she believes is right. She considers honoring her brother by giving hem the right- surpass(a) burial is her obligation. Antigone overcomes this obstacle by excusing her sister from joining her to bury their brother.The second obstacle that faces Antigone is the king himself. He wanted to force his bureau and power over the kingdom after the disturbance that happened in Thebes. He wants his orders and commands to be followed by everyone. Creon creates a monster of himself to scare his people he likes power, authority, and to be obeyed. Thats wherefore everybody was scared and afraid to disobey Creon except Antigone. She did whats right she wasnt even afraid when the guards arrested her, she courageously surrendered to them (1152). Creon felt that he lost his power and authority once Antigone disobey his orders. Creon says, This girl was an old hand at insolence when she overrode the edicts we made public. But once shed don it- the insolence, twice over- to glory in it, laughing, mocking us to our face with what shed done (Sophocles 1154). He considers Antigones act an insult to the king without considering that she wants to give her brother the proper burial to honor him as prince. That explains why he was so pugnacious in his verdict to execute her by starvation. Antigone knows that she is doing whats right and she surrenders to her destiny to be killed. On the other hand she follow throughms to refuse to be killed by Creon, thats why she killed herself as if she considers killing herself more honor than Creon kills her.The final obstacle that faces Antigone is her lover, Haemon, who was Creons son and who was very sad t hat hes going to flake out his pride. Antigone thinks about her lover. She doesnt want to die and leave him because she loves him so much. She is between two difficult decisions. whizz of them is if she decides to step on what she believes in and forget about her honored brother to stay with her lover, the other decision is to leave her lover and to die for what she believes in. Antigone doesnt think about her happiness she rather dies because of what she believes in than be with Haemon. She overcomes this obstacle by deciding to kill herself. Haemon, on the other hand, was used by Gods to punish Creon for his acts. He was not convinced with his fathers actions. Haemon states, I see my father offending justice-wrong (Sophocles 1161). He continues his colloquy asking Protect your rights? When you trample down the honors of the gods? (Sophocles 1611). Haemon distinguishs the fact that his father doesnt realize, is that he dishonors the gods. Haemon wants to explain to Creon that no matter what happened dont disobey or disrespect the gods. Another thing Haemon realizes that Creon doesnt realize that there is more powerful force than Creons force which is the gods force. Creon thinks that he has the ultimate power and authority thats why he cant see Haemon point of view. Haemon goes to Antigones grave and he couldnt see her kills herself in the front of him, so he kills himself.In the play, Antigone faces a lot of obstacles, and she overcomes them all. She doesnt give up, and once she feels that the kings authority will bring her down, she decides to take her own spirit-time rather than the injustice system does. She is determining to do what she feels is right, no matter what the laws of the kingdom says. She is motivating by her obligations towards her family, and by her personal beliefs. She first faces her sister who is against her from the beginning, because she is afraid of Creons decrees. Antigone excuses her sister from burying her brother with her. wink obstacle Antigone faces is the rigorous king, Creon, who gives his strict orders that whoever bury Polynices will die. Antigone doesnt care about Creons decrees she knows the consequences will be the death penalty, but she stands bravely in front of Creon. The final obstacle Antigone faces is her lover who is so in love with her and he cant see her dieing. Antigone also cant see her lover cries and she cant leave him as well. This is the most difficult obstacle that faces Antigone. Finally she kills herself when she finds that its more honor to kill herself than Creon kills her. Antigone knows that she will die for what she did. She put what she believes in before her and sacrifices her own life to do whats right.

A History of Pottery

A History of potteryThe protrudeturn of pottery is one of the most superannuated arts. The oldest cognise consistence of pottery dates from the Jomon period (from about 10,500 to 400 BC) in Japan and redden the earliest Jomon ceramics let on a unmatched sophistication of technique and conception. Excavations in the Near East wee revealed that primitive fired-clay vessels were do there more than 8,000 years ago. Potters were working in Iran by about 5500 BC, and earthen run off was probably being produced even earlier on the Iranian high plateau. Chinese potters had certain characteristic techniques by about 5000 BC. In the New World many pre-Columbian American cultures developed highly artistic pottery traditions.TYPES OF WARESPottery comprises three distinctive types of wares. The first type, earthenware, has been make following virtu eachy the same techniques since ancient quantifys besides in the modern era has mass turnout brought changes in materials and methods. Earthenware is basically comprise of clayoften blended claysand parched hard, the degree of hardness depending on the intensity of the heat. After the cheat of glazing, earthenwares were coated with glaze to render them seal off sometimes glaze was applied decoratively. It was found that, when fired at great heat, the clay body became nonporous. This sec type of pottery, called stoneware, came to be preferred for domestic use.The third type of pottery is a Chinese invention that appeared when feldspathic material in a fusible state was incorporated in a stoneware fundamental law. The ancient Chinese called decayed feldspar terra alba (meaning high place, where it was originally found) this substance is known in the West as china clay. Petuntse, or china stone, a less decayed, more fusible feldspathic material, was besides utilize in Chinese porcelain it forms a white cement that binds together the occasionicles of less fusible kaolin. Significantly, the Chinese have never felt that high-quality porcelain must be either translucent or white. Two types of porcelain evolved true porcelain, consisting of a kaolin hard-paste body, extremely glassy and smooth, produced by high temperature touchwood, and soft porcelain, invariably translucent and tend glazed, produced from a composition of ground glass and some other ingredients including white clay and fired at a low temperature. The latter(prenominal) was widely produced by 18th- carbon European potters.It is believed that porcelain was first made by Chinese potters toward the end of the Han period (206 BC-AD 220), when pottery generally became more re okayd in body, form, and decoration. The Chinese made early vitreous wares (protoporcelain) before they developed their white vitreous ware (true porcelain) that was later so much admired by Europeans.Regardless of time or place, basic pottery techniques have varied little except in ancient America, where the potters wheel was unknown. Among the requisi tes of success are correct composition of the clay body by using balanced materials scientific discipline in shaping the wet clay on the wheel or pressing it into molds and, most important, firing at the correct temperature. The last operation depends vitally on the experience, judgment, and technical aptitude of the potter.DECORATING TECHNIQUESIn the product line of their long history potters have apply many decorating techniques. Among the earliest, impressing and incising of wares are still favored. Ancient potters in Egypt, Mesopotamia, Greece, northerly India, and the high regions of Central Asia (where primitive terra-cotta take tos associated with religious cults were produced) frequently adorn wares with im touch or incised designs. A notable incising technique developed more recently was that of Korean potters working in the Koryo period (918-1392). These artisans began by ornamenting their celadon wares with delicately incised and impressed ideals and later develope d elaborate inlaying by filling incised lines with disconsolate slip (semiliquid clay). Black and white slip was used most effectively for inlaying colored porcelains. Decoration of this clear generally depends more on the skill of the artisan than on the mingledity of the tools being used.An eespecially habitual type of decoration involved the sgraffito, or scratched, technique used by Italian potters before the fifteenth century. This technique, which is thought to have reached Italy from the Near East, was probably derived from China, where it was first used during the Song (Sung) dynasty (960-1279). By the 16th century Italian potters working mainly in Padua and Bologna had developed great skill in sgraffito, which entailed the incising of designs on red or buff earthenware that had been coated with ordinary transparent lead glaze, ordinarily toned chicken or, sometimes, brown, copper, or green. After firing, the wares were dipped into white clay slip so that a dark patter n could be cut on the surface. By cutting through the white slip, the artist produced a design on the exposed red or buff body. Pigments were also sometimes applied. After a that coating of lead glaze the ware was fired a second time.A sound intimacy of glazes two utilitarian and decorativeis vital to the potter. The origin of glazes and glazing techniques is unknown, but the fine lustrous glazes developed in China sure enough began with a simple glaze that served to cover earthenware and render it watertight. Chinese potters used two kinds of glazes, one composed basically of feldspar, and another produced by fusing silica of quartz or sand by means of a flux, generally of lead oxide.Chinese potters regarded glazes and glazing techniques as having prime importance under the Han emperors they made great efforts to make better this technology. The use of lead glaze increased, and wood ash was incorporated to impart a dullish brown or gray green people of colour, somewhat blotchy and occasionally iridescent. These effects were entirely natural, as no coloring matter was added to the composition. Glazing techniques were modified under successive dynasties. Colored glazes were developed and used to brilliant effect by Tang (Tang) and Song potters, and a great diversity of brightly hued wares appeared over the centuries.Many connoisseurs feel that the unmingled white porcelain, called blanc de chine, which first appeared during the Ming dynasty, is the most serenely beautiful of all Chinese ceramics. Dehua (Te-hua) potters in Fujian (Fukien) province, working during the seventeenth century, produced their blanc de chine containpieces in the purest white porcelain coated with a thick white glaze.Salt glaze, used by incline potters during the early 1700s, may well have been known to the Chinese but was not used by them. Near Eastern potters glazed wares in ancient times. Potters in Mesopotamia and Iran commonly used an alkalescent glaze made of quartz mixed with sodium and potassium. An admixture of colored metallic oxides, mostly lead, was introduced later. word picture on pottery and porcelain became richly colorful in many regions and periods. Decorative brush painting flat on the baked clay reached its zenith in China during the Ming dynasty (1368-1644), whose artists were highly skilled at painting in fired change. For a long period Chinese ceramic artists had used only black or brown pigment to decorate wares that were then covered with clear glaze. It is believed that the appearance in China of 13th-century brush-decorated wares from Persia sparked a change. These works, piebald in blue cobalt under the glaze, exalt the brushwork of the Chinese and the resulting so-called blue-and-white name.Ming artists also excelled in painting over the glaze, using brilliant enamel colors. The overglaze technique, which evolved over two centuries, demanded correct preparation of the enamels, skill in application, and the proper (low) fir ing temperature. The overglaze enamel decorations executed during the reign of Chenghua (1465-87), which were never surpassed in China, incorporated flowers, foliage, and figure subjects against backgrounds of arabesques and scrollwork. Designs enclosed within dark blue outlines were filled in with brilliant color. Enamel decoration of smart as a whip quality was also executed in Japan during the Edo period (1615-1868) by celebrated artists and potters of the bore-hole of Kenzan, Kakiemon, and Ninsei.In the ancient Aegean the potters art developed continuously from the Neolithic period and through the periods of the Minoan and Mycenaean civilizations, culminating, in ancient Greece, in a unique type of varicoloured pottery, which reached its height in the midst of the 6th and 4th centuries BC. The finest Greek pottery, especially Attic vases, was exquisitely proportioned and often decorated with finely painted relief work. Unlike artisans in Egypt, Mesopotamia, and Persia, the A ttic potters did not apply heavy glaze to their wares. The unique tinge commonly seen on Attic pottery and similar wares made elsewhere in Greece still baffles those who have tried to determine its formula and method of application. Neither a glaze nor a varnish, it is more pronounced on some areas, such as those painted black, than on others. Some experts conjecture that it may be attributed to illite or a similar clay mineral in a weak solution that was thinly applied to the surface of wares or mixed into the black paint used by the artists.In the Islamic world ceramic decorative art flowered with the creation of a great diversity of painted wares. Painted luster decoration on pottery originated in Mesopotamia and spread to ancient Egypt later, under Islam in Persia, this type of decoration on white-glazed wares became incredibly brilliant. Islamic luster-painted wares were later resultd by Italian potters during the Renaissance.MAJOR TRADITIONS IN THE WESTAfter the fall of th e ancient Roman Empire potters in Europe produced little other than repetitive utilitarian wares until the end of the Middle Ages.EarthenwareA distinctive type of earthenware known as majolica, which was derived from Chinese porcelain, appeared in Italy during the last quarter of the 14th century. It is now believed that this type of painted earthenware was inspired by the Hispano-Moresque luster-decorated ware of Spanish origin introduced to Italy by Majorcan seagoing traders.Majolica ware, whether thrown on the wheel or pressed into molds, was fired once to obtain a brown or buff body, then dipped in glaze composed of lead and tin oxide with a silicate of potash. The opaque glaze presented a surface that was fitted to receive decoration. A second firing after decoration fixed the white glaze to the body and the pigments to the glaze, so that the colors became permanently preserved. Frequently, the beauty of these wares was increased by dipping them in a translucent lead glaze com posed of oxide of lead mixed with sand, potash, and salt. When certain luster pigments and enamels were used in all-over painting, wares had to be specially fired at low temperature. Application of metallic luster pigments required great skill because these colors were extremely volatile and needed special handling.Luca della Robbia (see della Robbia, family) did not, as has been held, invent the enamel tin-glazing process nevertheless, his work raised(a) majolica production from a craft to high art in Italy. Not only did he use blue and white enamels in decorative work, but, as a sculptor, he also used the majolica technique to add brilliance to the surface of his productions. By the beginning of the 15th century Italian potters had abandoned the old familiar processes, and a revolution in style and techniques was under air. The severe style as followed in the first place in the school of Tuscany continued to the end of the 15th century, but rules and principles slackened until the inclusion of human beings figures in designs, previously frowned upon, was accepted. At the end of the 15th century Faenza became the thriving center of a clean pottery industry in Italy. A new, rich decorative style, known as istoriato, fired the conception of potters, reaching its zenith in the workshops of Urbino.In early 17th-century England attractive slipwares were produced, including the slip-decorated earthenware that was a speciality of the Toft family of potters. A kind of tin-glazed earthenware was also produced in the Netherlands, principally at Delft, beginning in the mid-17th century. Termed delftware, it was among the first European wares to be decorated with motifs inspired by Chinese and Japanese models.Continental PorcelainsEventually, European potters, who much admired the porcelain of the Far East, attempted to imitate it, but the formula remained elusive. Francesco de Medici, grand duke of Tuscany, produced an inferior type of soft-paste porcelain in his Florence workshop during the 16th century. In jar against 1709, Augustus II of Saxony announced that his ceramist Johann Bottger (1682-1719) had discovered how to make porcelain. The first European majestic porcelain manufactory was consequently established at Meissen (see Meissen ware) near Dresden, Germany. Throughout the century following the discovery of the porcelain formulawhen, despite the achievement precautions at Meissen, the secret leaked outmany rival factories were set up in Europe. Germany, Austria, Italy, France, and England soon had factories engaged in the production of wares much like those of Meissen.Porcelain figures were first produced in Meissen as table ornaments the earliest examples were formed as part of sweetmeat dishes. Many splendid wares issued from the royal factory, but none were more admired than the finely modeled and decorated porcelain figures imitated by almost every German, Austrian, Italian, and English factory of note. Widespread interest in figures of both pottery and porcelain has continued to the present. Johann Joachim Kandler (1706-75), a master modeler, was the most notable of the artisans engaged in this work at Meissen and rivaled the celebrated Franz Anton Bustelli (1723-63) of Nymphenburg (see Nymphenburg ware).The methods used to produce porcelain figures as developed by Kandler imparted a new dimension to the art. German porcelain figures were usually produced from molds, which, in turn, were cast from an original master model made of wax, clay, or, occasionally, wood. The use of molds facilitated unlimited reproduction. Because the figures shrank during firing, allowances had to be made in their sizes they were also provided with a small venthole in the back or base to brook excess heated air to escape. Because different factories placed these holes differently, their positions help determine the provenance and authenticity of habituated pieces. When considerable undercutting was necessary, porcelain figures were usually made in sections, using separate molds. Portions of elaborate groups and single figures were later conjugate by a specially trained assembler (known as a repairer) who usually worked from a master model.Europes second hard-paste porcelain factory began operations at Vienna in 1717. In the late 1700s at the royal Sevres (see Sevres ware) factory in France, potters experimented until they developed a remarkably white, finely textured body. Sevres wares were painted in unique colors that no other European factory could duplicate. The bleu de roi and rose Pompadour of Sevres wares captivated all Europe and, with the products of Meissen and Vienna, inspired English potters.English WaresThe finest English porcelainboth soft- and hard-pastewas made between about 1745 and 1775. The first English porcelain was probably produced at Chelsea (see Chelsea ware) under Charles Gouyn, but his successor Nicholas Sprimont, a Flemish silversmith who took over oversight in 1750, was responsible for the high-quality wares, especially the superb figures, for which the factory became famous. Factories at Worcester (see Worcester ware), Bow, and Derby also produced wares that rival those of the Continent. direct by the ambitious, energetic, and enterprising Josiah Wedgwood and his successors at the Etruria factory, English potters in the late 18th and early 19th centuries became capable and inventive. Wedgwoods contributions consisted mainly of a much improved creamware, his celebrated jasperware, so-called black basalt, and a series of fine figures created by famous modelers and artists. After Wedgwood, other potters of the first half of the 19th century developed a number of new wares. Of these, Parian ware was the most outstanding and commercially successful.The name of this ware was derived from Paros, the Greek island from which sculptors in ancient times obtained the creamy or ivory-tinted marble that Parian ware resembled. The first examples of this new product, described as statuary porcelain, issued from Copeland and Garrets factory in 1842 and were immediately acclaimed. Two varieties of Parian ware were produced statuary parian, used in the fashioning of figures and reproductions of sculpture, and hard-paste, or standard, parian, from which hollowware was made. Statuary parian, incorporating a glassy frit, is classified as soft porcelain. Standard parian, with a greater proportion of feldspar in the composition but no frit, is hard porcelain. Early parian statuary was ivory-tinted due to the presence of iron in the feldspar devoid of iron silicate. Suitable deposits were eventually laid in Sweden and Ireland. Both English and American potters either obtained details of the original formula or worked out their own, and the resulting production of Parian wares on both sides of the Atlantic was enormous.Among the most beautiful and successful wares invented by 19th-century potters were those decorated in what came to be known i n England as pate-sur-pate, a paste-on-paste technique devised sometime after 1870 by Marc-Louis statesman (1835-1913) of Mintons in England. Pate-sur-pate, involving both modeling and painting techniques, was stained Parian ware decorated with reliefs in translucent tinted or white slip, the colors being laid one upon the other. Solon was inspired by a Chinese celadon case decorated with embossed flowers that he had admired in the museum at Sevres, where he worked for a time. At first his slip painting on biscuit porcelain simply peeled off he was successful, however, when he applied layers of slip to a damp surface. Minton wares decorated with pate-sur-pate became the most costly and coveted ceramic ornaments produced in England in the last quarter of the 19th century. Only a few English potters mastered Solons complex technique, although the work of his pupil, Alboin Birks, rivaled that of the master.20th-Century DevelopmentsBy the late 19th century, with the development of mach inery and the introduction of new technologies, the age of mass production dawned and the potters art consequently suffered. Western ceramic wares declined markedly in quality of materials and decoration. Florid designs, gaudy coloring, and inartistic shapes became fashionable, and the resulting decadence continued into the 20th century. Not until the 1930s were signs of revival in the form and decoration of ceramics discernible, principally in the productions of artist-potters who were active in Western Europe and the United States. Many of these artist-potters arrived at their innovations by way of continuous experiment with materials and techniques. Others sought inspiration from primitive types of Japanese pottery or in the forms of ancient American Indian traditions. Since the end of World War II the design and decoration of ceramics in both Europe and the United States, especially ornamental wares, has been largely influenced by individual artist-artisans. Commercial products, such as tablewares, have tended to reflect the styles and patterns developed by these potters, whose work has often shown striking originality.

Self Liberation Passive Resistance And Active Resistance History Essay

Self Liberation Passive underground And Active Resistance History EssayThe earliest trunk of hale work in the westerly Indies was the encomi block offa which utilized the Neo-Indian) people and resulted in the near decimation of their accurate population. This was followed by the system of white indentured labour which brought immigrants from Ireland, England and Wales. This did not last actually long because of the fact that the Europeans were not accustomed to the tropical climate of the westside Indies and did not survive in much(prenominal)(prenominal) harsh working conditions. This was then followed by African incarceration which brought millions of people from the coast of West AfricaFrom the outset one notes that systems of bondage existed and predated their imposition in the Caribbean region. in that respect were contrary concepts as to the duties and responsibilities of both knuckle mint and master- concept of striverry destroylessly present in almost all rec orded human civilisation ( e.g. Greece, Rome, China, Russia, Saudi Arabia, India, Africa ) but each differing from the other.In the British West Indies the slavery system was referred to as Chattel Slavery. This was a system whereby the slaves and their offspring were enslaved during their lifetime and were the sole property of the owner. The slaves were be bought and sold as commodities. This therefore meant that conditions were very in sympathetic and psychologically destructive to any human being. From the sixteenth Century until license in 1834 this variation of slavery was made legal and supported by the British government and was implemented in their colonies.The causes for the Emancipation of slaves in the British West Indies can be interpreted in galore(postnominal) different ways with Self Liberation (Resistance and Revolts) being at the forefront, the changing stinting climate in England at the time and The Abolitionist bm. Each of these played an classic role in the Emancipation of slavery but it was the incessant revolts which impacted the most and in the process gained recognition from entire the British population.1.0 Self-Liberation-Passive Resistance and Active ResistanceFrom the inception of African slavery there hold been records of many forms of resistance. From the time of capture to the woodlet there were forms of resistance by the African slaves. The slaves did not passively real slavery and it conditions. It showed that they were determined to fight for their freedom no matter what the cost was. Almost every family there was some form of revolts on the plantation in individually or in groups. There were many daily disruptions the by the slaves as forms of protest and resistance. Slave Resistance can be looked in two ways.Passive Resistance which includes the followingRunning Away intimately Significant form of non-violent resistance. golden to do (Physically)A destination however was needed (Sometimes not to be found).Jamaica, Tr inidad, St. Vincent, and Guyana were good territories to run onward in.The Maroons were runaways who stayed runaways. They set up their own communities apart from the plantation society. The Jamaica Maroons fought two major wars with the British and won which forced the granting of their freedom with a signed treaty. In the treaty they agreed to return all runaways to their masters.Many reextractions were worn out(p) by the plantation owners to catch the runaway slaves. They therefore had to discourage others from exhausting to do it. It contained many pretends trying to recapture runaway slaves.StarvationSlaves starved themselves to death.To lessen their workload.This resulted in a decline of production in the plantation and also caused the owner to lose money if the slave died.Faking IllnessesNot being able to work.Most instances the master did not care but in instances where he thought it was contagious the slave would stomach rest.Again this disrupted the daily activities i n production and the slave still had to be fed.Go relaxThis was difficult to succeed.Most times there was a potential for the slave to be whipped.It was gritty risk to the slaves.In a way the slaves took risks of being punished at the same time trying to form resistances against being enslaved.SabotageDamage equipment in the factory.Burn sugar cane yield.Kill AnimalsThis was all extremely dangerous but was accomplished. It was highly effective because it resulted in the owner losing money devising production of the crop to decline. They were times slaves were put to death if found out.Cultural RetentionA vested interest by the slave masters was to take away their culture resulted in dehumanizing the slaves. A practice of drumming which the slaves was an important action at law in African culture and religion. It was as type of identity for the slaves. heretofore some of the slaves still practice it.In removing culture and religion of the slaves, other cultures developed such as a mixture of the African religion with Christianity. By doing this it showed a form of resistance by the slaves.In doing so the slaves maintained form of communication unk flatn to the masters which enabled their revolts to be started.Educating OneselfIt was felt to be most dangerous if slaves were able to charter and understand what was communicated by the masters.Being kat onceledgeable was considered to be dangerous to the slave master because other slaves could be educated as well.By being knowledgeable the other slaves would be informed of what is taking redact such as the news of the Haitian Revolt by slaves.Most slave societies had laws banning training slaves to read and write.Active Resistance which includes the followingSuicideSlaves killed themselves rather than have to know in such horrible conditions. This resulted in the slave masters to lose money on their investment. .InfanticideEven though the women saved their children they were prepared to save these child ren from the life they lived and had endured. This meant killing their infant instead of them being born as slaves. toxic conditionMost revolts were started by women slaves who tried to poison their masters.Many slave women had knowledge of poisonous plants and used it against the owners.It was always on the minds of owners being poisoned by slave women who cooked for them.Open Revolt and RebellionIt must be noted that the only successful slave revolt was in Haiti in 1804.However many revolts were attempted in the British West Indies. The slave owners controlled how things were done in the plantation the way of life of the slaves but they could never have controlled the minds of the enslaved individual who only thought was freedom.The Major Revolts in the British West IndiesBarbados Rebellion in 1816In 1816 a major tumult broke out led by an African born slave Bussa. It was circularise across one third of the island and included seventy plantations. It was properly organized by t he slaves lacking(p) their freedom and a better way of life. By the time the revolt was over a pull in of the sugar cane crop was lost. It resulted in the execution of 214 slaves and the displacement of others who were sold off or shipped out. However it did accomplished a tremendous loss of income to the plantation owners.The Demerara Rebellion in 1823With sugar prices down slaves were pushed harder in the sugar cane fields so as to increase the production levels. This resulted in a major rebellion in 1823 in Demerara organized by Quamina and Smith. It heterogeneous about 9000 slaves. It resulted in the death and injury of many enslaved people. It must be noted that no plantation owners or their families were yen as in previous rebellion.The Jamaica Rebellion in 1831The island on Jamaica had a numerous rebellions a chalk up of 16 from 1655 to 1813.However the largest one took place in 1831. It started when enslaved people demanded payment for the work been done. It was led by Samuel Sharpe and it involved 20,000 slaves who took control of over 200 estates and seized a vast amount of land. It was eventually controlled resulting in the loss of live of 200 slaves and 14 British planters. This rebellion lasted several months and took the effort of the British troops and local militia to suppress it. The impact of this rebellion made the British realised the dangers and cost of continuing slavery because this rebellion dealt a very severe blow to the economic value of the plantation system in Jamaica. therefore it can be seen the main reason more than and more historians are holding firm of the status that the slaves were themselves responsible for their own freedom. The slave population had vastly outnumbered the Europeans at that time. In number there is loudness and the slaves were not going to tolerate being enslaved and dehumanized without putting up a fight. Most important the plantation owners had begun living a life of fear by the high number of r evolts which placed their lives in danger even though more slaves died during and after any rebellion than whites. Therefore the threat of more rebellion caused the British to change its position of continuing slavery and whether it was economically viable enough to play along with the plantation system.2.0 The Change in Economic Policies in EnglandNearing the end of the 18th century the profitability of the plantation and the system of slavery was in decline. This in a way contributed to the abolition of the slave trade in 1807 which was no interminable profitable. The Industrial Revolution had started in England at this time and the economy was moving to a capitalist system. Britain no longer needed good that had been produced under the plantation system and which had to be to a great extent subsidized by the government Factories in Manchester had begun producing and employing thousands of workers producing goods like cotton which was in heavy demand and very profitable. This r apid growth of Industrialization required Brobdingnagian capital and money from the slavery made was now invested heavily in new factories instead of supporting a now non profitable plantation system. profits from the British West Indies could not be sold on the open market in England for a profit and as a result warehouses were overstocked. This was because of the open market system which allowed sugar to be purchased from the cheapest source such as Cuba and Brazil. At the same time too France was producing beet sugar which was cheaper and of a high quality too. Previously the British had imposed heavy taxes on sugar not produced by the British plantation. In this capitalist environment it was difficult for the government to have continued with a socialist economy.In addition the constant threat of revolts by the slaves made the situation worse for the planters. The revolts which occurred resulted in loss of blue-chip properties such as factories and white human lives. They the plantation system were no longer important to the thriving economic progress which took place in England .The new manufactures and now middle class no longer felt obligated to support a system which no longer brought in a huge sum of money. This resulted in the plantation owners to lose whatever allies and support they had at home.3.0 The Church, the Abolitionist Movement and Reformation in GovernmentDuring this period the British experienced had a rebirth in their Christian faith and the thinking of every man being a brother of another. Therefore slavery was now thought of as being very un-Christian and resulted in the Church joining the Abolitionist movement to end slavery. This caused the Church to become actively involved in the emancipation process.The Abolitionist wanted to see the end of slavery as soon as possible and now had tremendous power in parliament with a two-third majority. The plantation now had no lobbying power in parliament. Their campaign included prominent f igures such as William Wilberforce who was an MP in parliament and doubting Thomas Buxton who succeeded him. There were also radical figures as Thomas Clarkson whose group mounted tremendous pressures on the British parliament and government. This campaign led to the passage of the Emancipation Act in 1833 and which became law on 1st August 1834.The white working class in cities such as Manchester had begun to get signed petition to end slavery. They began a campaign which soon spread rapidly joining with the Abolitionist movement. In a way these humanitarians efforts did in a way bring on the emancipation process. The average working class citizens had begun to realize that the African slaves were their brothers and started to adopt a more humane stance.It must be noted that the plantation owners were given a grant of 20 million which for allowance for the loss of property and for ending slavery. This helped to enable the plantation owners to keep their properties and control of power intact. The African slaves got suddenly nothing except their so called freedom. The now freed slaves had no money or land to survive making the process of actually having to survive extremely difficult.Conclusion

Summary and Analysis of the Compton Effect

stocky and Analysis of the Compton progenyEn = nhf (1) where En is the efficiency, n is a non-negative integer, h is Plancks continuous, and f is the frequence of the photon.2 In 1905, Albert Einstein extended Plancks inference to wholeow not but black body beam of light but all electromagnetic waves Therefore, Einstein hypothesized that electric arc is quantized with faculty proportional to its absolute frequency.3 The axiomatic principle to be deduced from these discoveries is that a unobjectionable possessed attributes of waves and parts In 1922, Arthur Holly Compton solidified Plancks supposal and and then firmly established a new era of physics. Compton theorized and thusly tryally demonstrated that electromagnetic waves had the properties of particles. Classically, roentgen rays would shake the negatrons of a target visible at the homogeneous frequency of the roentgenogram. Hence, the wavelength of radiation from the oscillating negatrons would be alike to the wavelength of the ledger entry xrays. 1 However, it was discovered that x-rays were more than easily absorbed by materials than waves of thirster wavelength. In former(a) words, the break upx-rays were of longer wavelength.4 This was contrary to the predictions of unequivocal physics. Compton realized though, that if the interaction was modeled as a smasher surrounded by two particles (electron and photon), the upset x-rays would-be of longer wave length (comp bed to the hap-rays) because the ricocheting electron would acquire some of the pushing and pulse of the elect(postnominal) x-ray.4 Since wavelength is oppositionly proportional to frequency, the frequency of the separate x-rays was less. From eq. (1), it is seenthat the nil would also be decreased. When Compton carried come in this experiment in 1922 using bit as his target, he verified his possible action and provided even more evidence that light also possessed a mass less particle natureDetailed Description of Compton featthe elastic dispersal of electromagnetic radiation by free electrons, accompanied by an adjoin in wavelength it is discover during disperse of radiation of sooner long wavelength-X rays and da Gamma rays. The corpuscular properties of radiation were fully revealed for the branch time in the Compton pith.The Compton effect was discovered in 1922 by the Ameri fag physicist A. Compton, who observed that X rays scattered in paraffin obligate a longer wavelength than the casualty rays. Such a skid in wavelength could not be explained by classical theory. In fact, gibe to classical electrodynamics, under the influence of the fortnightly electric field of an electromagnetic (light) wave, an electron should oscillate with a frequency equal to that of the wave and consequently should radiate secondary (scattered) waves of the same frequency. therefore, in classical dissemination (the theory of which was provided by the British physicist J. J. Thom son and is therefore called Thomson diffusion) the wavelength of the light does not mixture.An elementary theory of the Compton effect based on quantum concepts was disposed(p) up by Compton and independently by P. Debye. According to quantum theory a light wave is a stream of light quanta, or photons. Each photon has a definite energy =hv=hc/and a definite urge p= (h/)n, where is the wavelength of the sequent light (vis its frequency),cis the speed of light,his Plancks never-ending, and n is the unit vector in the statement of propagation of the wave (the subscript denotes a photon). In quantum theory the Compton exit appears as an elastic striking between two particles, the attendant photon and the stationary electron. In every such collision event the laws of preservation of energy and neural impulse argon obeyed. A photon that has collided with an electron transfers part of its energy and momentum to the electron and changes its direction of motion (it is scattere d) the decrease in the photons energy signifies an increase in the wavelength of the scattered light. The electron, which previously had been stationary, receives energy and momentum from the photon and is set in motion (it experiences recoil). The direction of motion of the particles after(prenominal) the collision, as well as their energy, is determined by the laws of conservation of energy and momentum (Figure 1).Elastic collision of a photon and an electron in the Compton effect. Before the collision the electron was stationarypand p are the momentum of the possibility and scattered photons, pe=mvis the momentum of the recoil electron (vis its velocity),(is the photons sprinkling be given, and is the slant of escape of the recoil electron relative to the direction of the attendant photon.Simultaneous solution of the equations expressing the equality of the summed energies and momentums of the particles before and after the collision ( anticipate that the electron is statio nary before the collision) gives Comptons polity for the stagger in the wavelength of the light= =0(1 - cos )Here is the wavelength of the scattered light, is the photons break up locomote, and 0=h/mc= 2.426 - 10-10cm = 0.024 angstrom () is the Compton wavelength of the electron (mis the mass of the electron). It follows from Comptons commandment that the shift in the wavelength does not depend on the wavelength of the incident light itself. It is solely determined by the diffusion go of the photon and is maximal when = one hundred eighty, that is, when scattering is straight back max= 2o.Expressions for the energy eof the recoil, or Compton, electron as a function of the angle of its escape may be obtained from the same equations. The dependence of the energy of the scattered photon on the scattering angle , as well as the dependence of eon , which is link up to it, is shown in Figure 2. From the figure it is apparent that the recoil electrons always deplete a vel ocity component in the direction of motion of the incident photon (that is, does not exceed 90).Experiment has confirmed all the in a heightser plaza theoretical predictions. The correctness of the corpuscular concepts of the mechanism of the Compton effect-and thus the correctness of the underlying assumptions of quantum theory-has been experimentally proved.In actual experiments on the scattering of photons by matter, the electrons are not free but are bound to atoms. If the energy of the photons is high in comparison with the binding energy of the electrons in the atom (X-ray and da Gamma-ray photons), then(prenominal) the electrons experience a recoil strong enough to expel them from the atom. In this case the photon scattering proceeds as if with free electrons. However, if the energy of the photon is not sufficient to tear the electron from the atom, then the photon exchanges energy and momentum with the constitutional atom. Since the mass of the atom is very great comp ared to the photons equivalent mass (which, accord to the theory of relativity, equals y/c2), the recoil is virtually nonexistent therefore, the photonDependence of the energyof the scattered photon on the scattering angle(for convenience, only the upper half(prenominal) of the symmetrical curve is depicted) and the dependence of the energy eof the recoil electron on the angle of escape 0 (lower half of the curve). Quantities cerebrate to the same collision event are labeled with identical numbers. The vectors drawn from point 0, at which the collision between the proton with energy and the stationary electron occurred, to corresponding points on the curves depict the state of the particle after scattering the magnitudes of the vectors give the energy of the particles, and the angles formed by the vectors with the direction of the incident photon define the scattering angle and the angle 0 of the recoil electrons thoroughfare. (The graph was plotted for the case of scattering of hard X rays with wavelengthhc/= o= 0.024 .)is scattered without a change in its energy (that is, without a change in its wavelength, or coherently). In doughy atoms only the peripheral electrons are weakly bound (in contrast to the electrons make full the inner shells of the atom), and therefore the spectrum of the scattered radiation has both a shifted (Compton) breeze, from scattering by the peripheral electrons, and an un-shifted (coherent) line, from scattering by the entire atom. With increasing nu cloudless number (nuclear charge) the electron binding energy increases, the relative warmth of the Compton line decreases, and that of the coherent line increases.The motion of the electrons in atoms leads to a broadening of the Compton lines in the scattered radiation. This occurs because the wavelength of the incident light appears to be slightly changed for moving electrons in addition, the amount of change depends on the magnitude and direction of the electrons velocity ( the Doppler effect). mensural measurements of the intensity distribution in a Compton line, which reflects the velocity distribution of the electrons in the material, has confirmed the correctness of quantum theory, according to which electrons obey Fermi-Dirac statistics.The simplified theory of the Compton Effect examined here does not permit the calculation of all characteristics of Compton scattering, particularly the intensity of photon scattering at various angles. A complete theory of the Compton Effect is provided by quantum electrodynamics. The intensity of Compton scattering depends on both the scattering angle and the wavelength of the incident radiation. Asymmetry is observed in the angular distribution of the scattered photons more photons are scattered forward, and the asymmetry increases with increasing energy of the incident photons. The total intensity of Compton scattering decreases with an increase in the energy of the primordial photons (Figure 3) this indicate s that the probability of the Compton scattering of a photon passing by matter diminishes with lessen energy. Such a dependence of intensity on y determines the place of Compton scattering among the other effects of interaction between matter and radiation that are responsible for loss of energy by photons in their expiration by dint of matter. For example, in lead the Compton effect makes the main contribution to the energy loss of photons at energies of the order of 1-10 mega electron volts, or MeV (in a barge element, aluminum, this range is 0.1-30.0 MeV) below this region it is surpassed by the photoelectric effect, and above it by pair production.Compton scattering is utilise extensively in studying the gamma radiation of nuclei it is also the basis of the principle of operation of some gamma spectrometers.The Compton effect is possible not only for electrons but also for other supercharged particles, such as protons however, because of the protons salient mass its reco il is obtrusive only during the scattering of photons with very high energy.The double Compton effect consists of the brass of two scattered photons in place of a single incident photon during scattering by a free electron. The existence of this process follows from quantum electrodynamics it was first observed in 1952. Its probability is approximately a hundred propagation less than that of the ordinary Compton effect.Graph showing the dependence of the total Compton scattering intensityInverse Compton effect.If the electrons on which electromagnetic radiation is scattered are relativistic (that is, if they are moving with speeds close to the speed of light), then in an elastic collision the wavelength of the radiation will decrease the energy and momentum of the photons will increase at the expense of the energy and momentum of the electrons. This phenomenon is called the inverse Compton effect and is often use to explain the radiation mechanism of cosmic X-ray sources, the prod uction of the X-ray component of the background galactic radiation, and the regeneration of plasma waves into high-frequency electromagnetic waves.Description of the phenomenonBy the early 20th century, explore into the interaction ofX-rayswith matter was well underway. It was known that when a beam of X-rays is say at an atom, an electron is ejected and is scattered through an angle.Classical electromagnetismpredicts that the wavelength of scattered rays should be equal to the initial wavelength-9-23however, multiple experiments imbed that the wavelength of the scattered rays was greater than the initial wavelength.In 1923, Compton published a paper in thePhysical Reviewexplaining the phenomenon. Using the concept ofquantized radiationand the dynamics ofspecial relativity, Compton derived the relationship between the shift in wavelength and the scattering angleWhereis the initial wavelength,is the wavelength after scattering,his thePlanck constant,meis the mass of the electron ,cis thespeed of light, andis the scattering angle.The quantityhmecis known as theCompton wavelengthof the electron it is equal to2.43-1012m. The wavelength shiftis at least zero (for= 0) and at most twice the Compton wavelength of the electron (for= 180).Compton found that some X-rays see no wavelength shift despite being scattered through large angles in each of these cases the photon failed to eject an electron.Thus the magnitude of the shift is connect not to the Compton wavelength of the electron, but to the Compton wavelength of the entire atom, which can be upwards of 10000 quantify smaller.Compton Scatteringthe scattering of3.htmlc4x-raysfrom electrons in a carbon target and found scattered x-rays with a longer wavelength than those incident upon the target. The shift of the wavelength increased with scattering angle according to the Compton economyCompton explained and modeled the data by assuming a particle (photon) nature for light and applying conservation of energy and conservation of momentum to the collision between the photon and the electron. The scattered photon has lower energy and therefore a longer wavelength according to the2.htmlc3Planck relationship.At a time (early 1920s) when the particle (photon) nature of light suggested by the1.htmlc2photoelectric effectwas still being debated, the Compton experiment gave clear and independent evidence of particle-like behavior. Compton was awarded the Nobel Prize in 1927 for the discovery of the effect named after him.Compton Scattering DataComptons original experiment made use of molybdenum K-alpha x-rays, which have a wavelength of 0.0709 nm. These were scattered from a block of carbon and observed at different angles with a2Bragg spectrometer. The spectrometer consists of a rotating framework with a calcite vitreous silica to diffract the x-rays and an ionization chamber for detection of the x-rays. Since the spacing of the crystal planes in calcite is known, the angle of diffraction gives an accurate measure of the wavelength.Examination of the Compton scattering formula shows that the scattered wavelength depends upon the angle of scattering and also the mass of the scattered. For scattering from stationary electrons, the formula gives a wavelength of 0.0733 nm for scattering at 90 degrees. That is consistent with the right field peak in the illustration above. The peak which is near the original x-ray wavelength is considered to be scattering off inner electrons in the carbon atoms which are more tightly bound to the carbon nucleus. This causes the entire atom to recoil from the x-ray photon, and the larger effective scattering mass proportionally reduces the wavelength shift of the scattered photons. Putting the entire carbon nuclear mass into the scattering equation yields a wavelength shift almost 22,000 times smaller than that for an unbind electron, so those scattered photons are not seen to be shifted.The scattering of photons from charged particles is call ed Compton scattering after Arthur Compton who was the first to measure photon-electron scattering in 1922. When the incoming photon gives part of its energy to the electron, then the scattered photon has lower energy and according to the2.htmlc3Planck relationshiphas lower frequency and longer wavelength. The wavelength change in such scattering depends only upon the angle of scattering for a given target particle. The constant in the Compton formula above can be writtenand is called the Compton wavelength for the electron. The formula presumes that the scattering occurs in the rest frame of the electronCompton scattering occurs when the incident x-ray photon is deflected from its original driveway by an interaction with an electron. The electron is ejected from its orbital position and the x-ray photon loses energy because of the interaction but continues to travel through the material along an altered path. Energy and momentum are keep in this process. The energy shift depends on the angle of scattering and not on the nature of the scattering medium. Since the scattered x-ray photon has less energy, it has a longer wavelength and less penetrating than the incident photon.Compton Effect was first observed by Arthur Compton in 1923 and this discovery led to his award of the 1927 Nobel Prize in Physics. The discovery is of import because it demonstrates that light cannot be explained purely as a wave phenomenon. Comptons work convinced the scientific community that light can behave as a stream of particles (photons) whose energy is proportional to the frequency.The change in wavelength of the scattered photon is given byWhereL=wavelength of incident x-ray photonl=wavelength of scattered x-ray photonH=Plancks Constant The fundamental constant equal to the ratio of the energy E of a quantum of energy to its frequency v E=hv.me=the mass of an electron at restC=the speed of lightQ=The scattering angle of the scattered photonThe applet below demonstrates Compton scattering as calculated with the Klein-Nishina formula, which provides an accurate prediction of the angular distribution of x-rays and gamma-rays that are incident upon a single electron. Before this formula was derived, the electron foul up section had been classically derived by the British physicist and discoverer of the electron, J.J. Thomson. However, scattering experiments showed substantive deviations from the results predicted by Thomsons model. The Klein-Nishina formula incorporates the Breit-Dirac recoil factor, R, also known as radiation pressure. The formula also corrects for relativistic quantum mechanics and takes into account the interaction of the tailspin and magnetic moment of the electron with electromagnetic radiation.Quantum mechanics isa system of mechanics based on quantum theory to provide a consistent exposition of both electromagnetic wave and atomic structure.The applet shows that when a photon of a given energy hits an atom, it is sometimes reflec ted in a different direction. At the same time, it loses energy to an electron that is ejected from the atom. Theta is the angle between the scattered photon direction and the path of the incident photon. Phi is the angle between the scattered electron direction and the path of the incident photon.Derivation of the scattering formulaA photonwith wavelengthis directed at an electronein an atom, which is at rest. The collision causes the electron to recoil, and a new photonwith wavelengthemerges at angle. Letedenote the electron after the collision.From theconservation of energy,Compton postulated that photons carry momentum-9-23thus from theconservation of momentum, the momenta of the particles should be related byAssuming the initial momentum of the electron is zero.The photon energies are related to the frequencies byWherehis thePlanck constant. From therelativistic energy-momentum relation, the electron energies areAlong with the conservation of energy, these relations think that ThenFrom the conservation of momentum,Then by making use of thescalar product,ThusThe relation between the frequency and the momentum of a photon ispc=hf, so forthwith equating 1 and 2,Then dividing both sides by 2hffmec,Sincef=f=c, demodulator characteristicsEven large Compton-scatter telescopes have relatively small effective areas. This is because only a small number of the incident gamma-rays actually Compton scatter in the top level. So even if an instrument like COMPTEL has a geometric area of several thousand cm2, the effective area (weighted for the probability of an interaction) is a few tens of cm2.Energy resolution is fairly good for these detectors, typically 5-10% This is particular by uncertainties in the measurements of the energy deposited in each layer. Compton scatter telescopes have wide fields-of-view and can form imageseven though the so-called point hand out function (the probability that an event came from a certain area on the sky) is a ring.ApplicationsCo mpton scattering is of prime importance toradiobiology, as it is the most seeming interaction of gamma rays and high energy X rays with atoms in nutrition beings and is applied inradiation therapy.34In material physics, Compton scattering can be used to probe thewave functionof the electrons in matter in the momentum representation.Compton scattering is an important effect ingamma spectroscopywhich gives rise to theCompton edge, as it is possible for the gamma rays to scatter out of the detectors used.Compton suppression is used to detect stray scatter gamma rays to move this effect.Inverse Compton scatteringInverse Compton scattering is important inastrophysics. InX-ray astronomy, theaccretion disksurrounding ablack holeis believed to produce a thermal spectrum. The lower energy photons produced from this spectrum are scattered to higher(prenominal) energies by relativistic electrons in the surroundingcorona. This is believed to cause the power law component in the X-ray spectra (0.2-10 keV) of accreting black holes.The effect is also observed when photons from thecosmic microwave backgroundmove through the hot gas surrounding agalaxy cluster. The CMB photons are scattered to higher energies by the electrons in this gas, resulting in theSunyaev-ZelHYPERLINK http//en.wikipedia.org/wiki/Sunyaev-Zeldovich_effectHYPERLINK http//en.wikipedia.org/wiki/Sunyaev-Zeldovich_effectdovich effect. Observations of the Sunyaev-Zeldovich effect provide a or so redshift-independent means of detecting galaxy clusters.Some synchrotron radiation facilities scatter laser light off the stored electron beam. This Compton backscattering produces high energy photons in the MeV to GeV rangesubsequently used for nuclear physics experiments.Future developmentsCurrent research on Compton telescopes is express ways of tracking the scattered electron. By measuring the direction of the scattered electron in the top level, a complete solution for the incoming trajectory of the cosmic gam ma-ray can be found. This would allow Compton telescopes to have more conventional data analysis approaches since the event circle would no longer exist.

Health Promotion in Adult Nursing: Adult Asthma Case Study

wellness Promotion in braggart(a) breast feeding Adult Asthma Case StudyThis essay leave alone address how to succor a 20 year old asthma sharpshoot fall fag ender fill to an end his recurrent admissions to hospital beca employment of discriminating exacerbations in his asthma. Asthma is a common and continuing inflammatory disorder of the airways, associated with marked wellness and economical consequences. It is estimated that approximately 5.2 one thousand thousand sight in the United Kingdom (UK) suffer from asthma, making the condition the most common long verge un healthiness in this country. Asthma levels for 1,400 deaths per annum, with a third of these being among individualists under 65 years of age. Similarly, asthma also accounts for about 69,000 hospital admissions a year. It is estimated that to a greater extent than half of the 5.2 million people with asthma in the UK do not have adequate symptom control. While 500,000 of these have asthma that is d ifficult to control with in stock(predicate) medication, and are thought to be resistant to corticosteroids, asthma is not well controlled in approximately 2.1 million people for reasons much(prenominal) as non-concordance with medication (Asthma UK, 2004, pp3-7).As already mentioned asthma is a long-run chronic condition (LTC) and although chronic illness is not a newly-recognised phenomenon, the incidence and prevalence has signifi back toothtly increased oer the second half of the twentieth century and continues to rise in the 21st century (Howie, 2005, p318). This is not least because of the aging population and advances in medical science diminishing the partake of infectious diseases. In addition, the emergence of unhealthy lifestyles is arguably the trigger for some(prenominal) non-communicable diseases such as chronic heart disease, type 2 diabetes mellitus, and chronic obstructive pulmonary disease to which asthma has similar pathophysiology. (Nissinen et al, 2001, p96 3). It is estimated that in the UK over 17.5 million people are affected by a LTC and 8.8 million have long term illness that severely limits their day to day ability to cope. It is proposed that those aged over 65 affected by a LTC are more likely to have multiple long term conditions, which makes assistance particularly complex. Debatably, unhealthy lifestyles and an aging population are the reasons for the soaring prevalence of LTCs contributing towards the large financial costs in affectionateness for these patients who occupy up to 42 percent of all acute hospital bed days (Department of Health (DH), 2005b, p10). Arguably, these issues indicate that these patients are not receiving the care in ways that meet their unavoidably or the necessitys of the health system. It is proposed that this is why oversight of LTCs is of specific importance to current Government health strategies. To this effect, numerous policy documents have been published that define the present philoso phies for the management of LTCs.One particular policy The National gain Framework (NSF) for grand Term Conditions was published by the DH in March 2005 (DH, 2005b, p24). The NSF predominantly concentrates on individuals with long-term neurological conditions. However, it is anticipated that to a great extent the focusing presented could be relevant to all long-term conditions. The document has outlined 11 quality requirements and among others there are various ones that are particularly relevant to Steven Williamss case. These include the provision of person-centred care and choice, the offer of information and jump for the safe and effective use of medicines, the jumping of self care and the condition of health promotion needs.It is suggested that in order to meet Stevens needs he will require support and education so that he whoremonger make informed choices. Metcalf (2005, p60) suggests that informed choice for those with LTCs is the key fruit to victor and a means o f examining issues pertaining to non-concordance, risk taking behaviours and patient choice. As already mentioned, Steven began to smoke when he started attending university. Cigarette pot is implicated as a health-risk behaviour and there is evidence to suggest that active ingest in adults with asthma increases asthma severity. A study by Siroux et al, (2000, p470) on the relationships of active take to asthma and asthma severity, found that current smokers with asthma had more asthma symptoms, more frequent asthma attacks ( 1 attack per day) and scored higher on the asthma severity scores, compared to those asthma sufferers who had never ingest and ex-smokers. Other trigger factors that can exacerbate asthma symptoms include house dust mites, pet allergens, pollen, moulds and fungal spores, certain drugs such as asprin and genus Beta blockers, occupational triggers and viral respiratory tract infections (Roberts, 2002, p46).Arguably, in Stevens case, on board his lack of conc ordance with his asthma medication, it is suggested that his smoking habit is a key factor in his acute asthma exacerbations. Therefore, it is proposed that Steven needs serve well with smoking cessation and education on the side effects and concordance of his medication. legion(predicate) approaches are presently being utilised for smoking cessation. These approaches incorporate pharmacological methods, such as nicotine replacement therapy or antidepressants, hypnotherapy, and exercise supported interventions. behavioral approaches include stage found interventions, which mainly use the transtheoretical simulation (Prochaska, DiClemente Norcross, 1992, p1102-14) and this model divides people into five different stages. These are the precontemplation, contemplation, preparation, action, and maintenance stages. The justification behind staging people, as such, is to fit the therapy to a persons need at his or her particular point in the change process. sequence through the stag es is in order, although relapses to previous stages can happen. The model also recognises 10 processes of change, the theory being that the effectiveness of the different processes of change will take off according to the patients stage. Arguably, however, this has not repeatedly been defended in confirmable research (Sutton, 2000, p31).It is proposed that it would be necessary for health professionals to recognise precisely an individuals stage of change, or readiness to change. This is so that an intervention ground on stage specific processes of change can be employed. It is heavy that the stage of change is re-evaluated regularly, and that the intervention should reflect changes in the individuals willingness to change. These elements of the intervention can be continual until the person accomplishes and sustains the change in behaviour. In this way, stage based interventions develop and adjust in manage to the individuals progression through the stages of change. Therefo re it is debated that stage based models recommend that interventions that take into account the existing stage of the individual will be much more successful and efficient than one size fits all interventions (Prochaska, DiClemente Norcross, 1992, p1103). Having said this however, the stages of change theory does not take into account any outside influences that might have an impact on a persons ability to change.It is proposed that Steven recognises that he has a problem and has asked for help. Therefore, it is suggested that this places him in the contemplation stage. It is suggested therefore, that Steven needs to be given help and advice that will bleed him to the preparation for action stage. In doing this, debatably, it will be necessary for Steven to esteem his feelings regarding his smoking behaviour. It is all important(predicate) therefore that health professionals who are using behavioral change models for smoking cessation are thoroughly trained in the procedure o r at least are aware of the handiness of a smoking cessation nurse. Ethically, it is argued that health professionals have a trading of care to help patients like Steven live healthier lifestyles. However, ethically Steven has the even off to autonomy in his lifestyle choices (Tschudin, 2003, p151).It is proposed that inhaled corticosteroids are still the most effective preventer drug for attaining treatment objectives (British thoracic Society, Scottish Intercollegiate Guidelines Network (BTS, SIGN, 2004, Chapter 4, p2). Steven has verbalise concerns about the effects of steroids and this has stopped him taking his preventative inhaler. Similarly, he tho uses his reliever inhaler when he becomes extremely wheezy. This is in accordance with breaking balls (2002, p554) suggestion that one of the reasons people do not take their medication is because they are worried about side effects. It is argued that this could be because their initial concerns might have not been fully addr essed by health professionals (Carter et al, 2003, p27). It is proposed that nurses are ideally placed to educate patients on the benefits of medication concordance. It is important that a nurse thoroughly explains the necessity of the treatment and any resultant side effects. Inhaled corticosteroids are the main preventative treatment for asthma sufferers. When taken twice daily at a moo dose, corticosteroids are super effective in reducing asthmatic symptoms, improving lung function, and reducing cellular inflammation. Systemic effects are rare on a low dose and most asthma patients are extremely well controlled on a low dose inhaler. Adverse local effects can include dysphonia and oral candidiasis. These symptoms can be relieved by either gargling or rinsing the mouth with water after inhalation (Roberts, 2002, p48). It is proposed that if Steven regularly takes his preventative inhaler then his asthma will be give way controlled and he is much less likely to need systemic corticosteroids that can have adverse side effects such as weight down gain and thinning of the skin when taken long-term.The NSF quality requirements of person-centred care and choice, and the offering of advice on the use of medication are relevant to the case mentioned, as is the consideration of health promotion needs. The patient will require help in giving up smoking as this is a major(ip) factor contributing to his repeat admissions to hospital. Help in the correct use of his medication is also required if he is to remain free from episodes of acute asthma. Nurses caring for patients like Steven will need to know what help is available with smoking cessation and the various options that can be offered to individuals who want to foreswear smoking. The Prochaska and DiClemente model of behaviour change is commonly used in smoking cessation however, its effectiveness is questionable.ReferencesAsthma UK (2004) Where do we stand, http//www.asthma.org.uk/how_we_help/publishing_re ports/index.html (last accessed June 25th 2007)Bender BG (2002) Overcoming barriers to nonadherence in asthma treatment, Journal of Allergy and Clinical Immunology, 109 Supplement 6, S554-559British Thoracic Society, Scottish Intercollegiate Guidelines Network (BTS, SIGN) (2004) British Guideline on the centering of Asthma A National Clinical Guideline, revised edition, Edinburgh, http//www.sign.ac.uk/guidelines/published/support/guideline63/download.html, chapter4, (last accessed June 26th 2007)Carter S, Taylor D Levenson R (2003) A Question of Choice conformation in Medicine Taking, Medicines Partnership, capital of the United KingdomDepartment of Health (2005b) The National Service Framework for Long-term Conditions, http//www.dh.gov.uk/en/Policyandguidance/Healthandsocialcaretopics/Longtermconditions/index.htm (last accessed June 25th 2007)Howie K (2005) Long-term conditions, recital Nursing, 16, 7, 318Metcalf J (2005) The management of patients with long-term conditions, Nu rsing Standard, 19, 45, 53-60Nissinen A, Berrios X Puska P (2001) Community-based noncontagious disease intervention lessons from developed countries for developing ones, Bulletin of the World Health Organisation, 79, 963-970, http//www.who.int/bulletin/archives/79(10)963.pdf (last accessed June 25th 2007)Prochaska JO, DiClemente CC Norcross JC (1992) In search of how people change Applications to addictive behaviors, American Psychologist, 47, 1102-14Roberts J (2002) The management of poorly controlled asthma, Nursing Standard, 16, 21, 45-51Tschudin V (2003) Ethics in Nursing The Caring Relationship, Third edition, Butterworth Heinemann, LondonSiroux V, Pin I, Oryszczyn MP, Le Moual N, Kauffmann F (2000) Relationships of active smoking to asthma and asthma severity in the EGEA study, European Respiratory Journal, 15, 3, 470477Sutton S (2000) A circumstantial review of the transtheoretical model applied to smoking cessation. In Norman P, Abraham C, Conner M, eds. understand and changing health behaviour from health beliefs to self-regulation. Amsterdam Harwood Academic put right