We see and understand things not as they are but as we are.

We see and understand things not as they are but as we are. Malav Manek XII-C Topic: We see and understand things not as they are but as we are. Discuss this claim in relation to at least two ways of knowing. Why do different people see the same things differently? The answer to this question could be the claim mentioned above. Knowledge is an extensive concept which has no precise definition since it has no end or limit. In TOK context, the acquisition and understanding of knowledge varies from person to person depending on how one has been brought up, his/her lifestyle and experiences and how widely he/she has been exposed to the great world. In other words, if you look at the above topic, what I would comprehend would be different from what anyone else would. In my view, not only is this claim applicable to the audience as a whole but also my mind and my upbringing agree with it; hence this statement can be assessed from a variety of perspective or to be precise, point of view. Several personal and universal examples can be used to verify or disprove this claim and the justifications may also depend on how knowledge is acquired: the ways of knowing. In view of the fact that knowledge is around us, there are several ways of acquiring it for the best of our intellect. Perception as one of the ways of knowing is simply the grasping of things and information through our five senses i.e. sight, taste, touch, smell and sound. Perception is an essential way in almost all areas of knowledge and many people including me depend on this source of knowledge. There are several components that affect a persons way of perceiving certain information. Sometimes, a person is likely to understand only what he expects or want to see or hear and neglects any other details that are not thought to be present. In my opinion, a mans amount of interest on a particular topic may also influence the way he would perceive it. At times, we tend to forget what we had fully seen or understood and hence I think this way of knowing is not completely reliable for all situations; though we can always confirm about something if more than one of our senses or any ot her sources support or confirm it. Every man is exposed to some form of literature in his life. This could either be in terms of childhood folktales or in poems studied at high school. Taking my own example, I used to be narrated several short stories just like any other kindergarten kid. These stories that had animals as the characters were meant to amuse all the children. On the other hand, these fables had a moral that taught a lesson about everyday life. As a child, I did not realize the importance of these morals but I was rather keen on the comic elements of the characters and the animated images. This was because I used to see things as I was and not as they were. As time passed, I got exposed to several principles of life and my knowledge got expanded. After a couple of years, my perception about the stories changed and I then understood from The Tortoise and the Hare, that the slow and steady always wins the race rather than just knowing that the slow tortoise won the race. As time passed by, even though the tale (thing) is as it was, my perception and understanding about it has completely changed since how I see and understand things now is entirely different from how I used to see and understand things earlier in my life. Emotions, on the other hand, include the sentiments, mood or passion either within us or outside us. Emotions differ in everyone at all times depending on the present circumstances a person encounters. This method of knowing usually gives rise to physical signs on a being other than the cerebral facet. Furthermore, emotions can also be altered by religious and ethical beliefs. A disciple of a certain religion would be disturbed and would not accept any claims against his practice especially if he intensely believed in it. Emotions are effective techniques of knowing since they help us in reducing down our choices in life. It is always easier to choose from a restricted short list rather than a collection of free options. Powerful emotions could either be a hurdle in acquiring knowledge or it could have a positive influence on our perception. Music is everywhere around us. This form of art is absolutely related to emotions since peoples moods get affected by perceiving, composing or playing it. Different types of music are categorized to represent various forms of emotions. The linking of music to a particular emotion differs from person to person. In a real life situation, one would use music to thrill, entertain, or relax oneself; everyone uses different types of music to deal with a particular state of mind. Regardless of the language portrayed by a particular song, preference for a type of music is the only reason to why anyones emotions would change to be upbeat from anxiety or sorrow; this concept is known as biased perception. Consequently, one would try to construct and describe fallacious reasons in order to support his choice and hence result into the powerful and changed emotions. When applying music in the medical field, doctors believe that it makes a patient feel better and fastens up the healing process. According to Dr. Michael DeBakey, In medicine, increasing published reports demonstrate that music has a healing effect on patients. [1] In my opinion, music tends to liven up the environment of the hospital which is usually very quiet and sorrowful. In a hospital, the atmosphere is normally such that the patient would always consider himself to be sick since his mind knows why he would have been admitted there. Use of music as a medium of entertainment would change the patients perception about the hospitals ambiance and hence his emotions would be modified accordingly. In this way, the person would overcome his psychological feeling of sickness and consider himself to be in a standard environment with no trouble. On the whole, music regulates our emotions which thus amend our perception about a specific thing; this allows us to see and understand things not as they are but as we are. Furthermore, one of the famous theories, Newtons second law of motion said that force was equal to mass times acceleration for all moving bodies. Isaac Newton constructed this theory on the basis of moving objects experienced by him and used by him in his daily life. It was his beliefs and expectations that affected the way he saw things. Accordingly, he concluded this generalized law which was believed by the world since everyone thought the way Newton did. This was, however, challenged by Albert Einstein who argued against the theory saying that it could not be applied to fast moving objects for example Light which is the fastest moving object on earth. He rectified the theory by introducing the relativity theory that was more accurate and suitable to calculate the force of any moving object at any speed. Einsteins thoughts and beliefs regarding this theory were different since he viewed the earth from a different perception when compared to those of Newton even though both were gr eat scientists. It can

How can cross cultural psychology be applied to other fields beyond the field of psychology? Essay

Cross cultural psychology can be defined as the study of the mental and behavioral conception of an individual within different cultural backgrounds by describing its invariance and variability. Human psychology is made to change invariably with changing environmental conditions. This process brings about changing dimensions into effects, self conceptions, cognition and psychopathological deviations. Conceptually, this leads to change in the individuals psychological aspects such as depression, and anxiety that comes as an adaptation to the changing psychological environment. Cross cultural psychology is therefore a fundamental process which is application in various aspects beyond the scope of psychology. At one level, it can be applied in the analysis of the social phenomena of people interaction within social settings and structures. This is primarily important because the influence of human interaction is modeled by various fundamental effects held in their psychological view. Social structures that are defined by the interaction of the people and their components are an important aspect in determining the basic scope of functionality into these societies. (Jimmy, 2004, p. 46) Cross cultural psychology is important in the current process of globalization and internalization. Different spheres of globalization have intermingled cohesively with one another as dictated by cross cultural psychology of the people. As of necessity, technological diffusion across different cultural origins modeled by different strands of psychological dispensations has been an important aspect. The variables of globalization and internalization have been cohesively safeguarded by the components of cross cultural psychology which is of necessity in creating mutual obligation and understanding between different party components (Jimmy, 2004, p. 57). Some health valuations have been modeled through principles of cross cultural psychology. Virtually, treatment of various disorders based on psychological foundations has used models of cross cultural psychology in developing persuasive intervention of the problem. For example, this phenomenon has been used in dealing with stress and other psychological disorders that emanate from the diversity in cross cultural foundations (Jimmy, 2004, p. 65) Reference Jimmy Peterson (2004) The Foundations of Cross Cultural Psychology. New York, Prentice Hall, pp. 46, 57, 65

Italian Verbs Fermarsi Conjugations

In Italian, fermarsi means to stop (at/by/in); remain; shut down, quit; pause; restrain oneself; dwell (on). Regular  first-conjugation Italian verbReflexive verb  (requires a  reflexive pronoun) INDICATIVE/INDICATIVO Presente io mi fermo tu ti fermi lui, lei, Lei si ferma noi ci fermiamo voi vi fermate loro, Loro si fermano Imperfetto io mi fermavo tu ti fermavi lui, lei, Lei si fermava noi ci fermavamo voi vi fermavate loro, Loro si fermavano Passato remoto io mi fermai tu ti fermasti lui, lei, Lei si ferm noi ci fermammo voi vi fermaste loro, Loro si fermarono Futuro semplice io mi fermer tu ti fermerai lui, lei, Lei si fermer noi ci fermeremo voi vi fermerete loro, Loro si fermeranno Passato prossimo io mi sono fermato/a tu ti sei fermato/a lui, lei, Lei si fermato/a noi ci siamo fermati/e voi vi siete fermati/e loro, Loro si sono fermati/e Trapassato prossimo io mi ero fermato/a tu ti eri fermato/a lui, lei, Lei si era fermato/a noi ci eravamo fermati/e voi vi eravate fermati/e loro, Loro si erano fermati/e Trapassato remoto io mi fui fermato/a tu ti fosti fermato/a lui, lei, Lei si fu fermato/a noi ci fummo fermati/e voi vi foste fermati/e loro, Loro si furono fermati/e Future anteriore io mi sar fermato/a tu ti sarai fermato/a lui, lei, Lei si sar fermato/a noi ci saremo fermati/e voi vi sarete fermati/e loro, Loro si saranno fermati/e SUBJUNCTIVE/CONGIUNTIVO Presente io mi fermi tu ti fermi lui, lei, Lei si fermi noi ci fermiamo voi vi fermiate loro, Loro si fermino Imperfetto io mi fermassi tu ti fermassi lui, lei, Lei si fermasse noi ci fermassimo voi vi fermaste loro, Loro si fermassero Passato io mi sia fermato/a tu ti sia fermato/a lui, lei, Lei si sia fermato/a noi ci siamo fermati/e voi vi siate fermati/e loro, Loro si siano fermati/e Trapassato io mi fossi fermato/a tu ti fossi fermato/a lui, lei, Lei si fosse fermato/a noi ci fossimo fermati/e voi vi foste fermati/e loro, Loro si fossero fermati/e CONDITIONAL/CONDIZIONALE Presente io mi fermerei tu ti fermeresti lui, lei, Lei si fermerebbe noi ci fermeremmo voi vi fermereste loro, Loro si fermerebbero Passato io mi sarei fermato/a tu ti saresti fermato/a lui, lei, Lei si sarebbe fermato/a noi ci saremmo fermati/e voi vi sareste fermati/e loro, Loro si sarebbero fermati/e IMPERATIVE/IMPERATIVO Presente — fermatisi fermifermiamocifermatevisi fermino INFINITIVE/INFINITO Presente: fermarsi Passato: essersi fermato PARTICIPLE/PARTICIPIO Presente: fermantesi Passato: fermatosi GERUND/GERUNDIO Presente: fermandosi Passato: essendosi fermato

Inclusion and Diversity - 5182 Words

The professional role of the class teacher is continually changing. It has long been expected that teachers should effectively accommodate all children regardless of their needs, with strategies and practice differing within and between settings to ensure that all children learn. However, recently more specific and detailed guidance has emerged that focuses on understanding the range of children’s needs (Hanko 2003). Instead of expecting children to ‘come up to standard’ or otherwise be segregated, an emphasis is now on schools to adapt and be flexible in order to accommodate, fully integrate and include every child (Tassoni 2003). Every Child Matters (ECM) details how it is the legal responsibility of the class teacher to ensure its five†¦show more content†¦As the observed child was being encouraged to share his experiences one is able to see how this guidance is being achieved. This leads one to explore other strategies that encourage diversity. In particular a model of best practice put in place a different approach to teaching children from diverse backgrounds due to the particularly high numbers of children learning EAL (Appendix 5). In this setting, professionals encouraged cultural diversity by allowing, when necessary, children to use their home languages. Support for this belief has been seen within the Plowden Report which also embraces the child centred philosophy (Bourne 2001). Similarly research by the United Nations Educational, Scientific, and Cultural Organisation (UNESCO 1953) supports this view, reporting that the home language is the best medium for instruction and for literacy development and should be used for as long as feasible. An explanation for this would be that because the home language facilitates subject learning and literacy development it is the means through which ‘a child absorbs the culturalShow MoreRelatedDiversity An d Inclusion Of Diversity1152 Words   |  5 PagesDiversity means understanding that individuals are unique or different in a particular way, leaning to accept and live with people with this differences. Interacting with people from different, religious beliefs, races, ethnicity, sexual orientation, socio-economic status, age, gender, physical abilities, political beliefs, or other ideologies, sexual orientation. Inclusion mean a state of being a part or identifying with a particular societal group. Diversity and inclusion on campus are very importantRead MoreDiversity And Inclusion For Diversity1920 Words   |  8 Pagessimplest terms diversity and inclusion can be explained by diversity being the mix and inclusion is getting the mix to work well together. 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IEP’s must be reviewed every 3 years by law. Thanks to laws such as IDEA, students with special needs can now enjoy an education on par with that of their non-disabled peers. These laws also benefit all students by adding to the diversity of the school environment, creating more opportunities to develop citizens who are culturally and differentially sensitive. References Gargiulo, R. (2012). Special education in contemporary society: An introduction to exceptionality (4th edRead MoreQuestions on Diversity and Inclusions926 Words   |  4 PagesWhat are the dimensions of cultural diversity? There have been a variety of attempts to develop a concise definition or reliable classification of what is meant by cultural diversity for a number of decades. Although there is no universal system available for determining what cultural diversity is there are several reappearing characteristics that are used by many of the experts attempting to arrive at a recognized system (Fearon, 2003). The first generalized dimension used is the concept ofRead MoreDiversity And Inclusion Of An Organization1204 Words   |  5 Pagessurvey, 24 executives were asked way advancing diversity in their organizations was so important to them. The majority believe â€Å"it was a business imperative because their companies needed it to stay competitive, and they believed it was a moral imperative because of their companies needed of their personal experiences and values† (Broysberg Connolly, 2013). Steve Reinemund was the first senior leader at PepsiCo to focus on diversity and inclusion from a perspective of changing the entire cultureRead MoreEquality Diversity Inclusion1538 Words   |  7 Pagesunderrepresented and knowing what to do about it. Taking positive action to assist individuals where this is appropriate. Diversity Diversity means to have a variety of people from all minority groups represented in the community or setting. It is understanding and valuing the differences between the individuals and groups in the community and respecting their needs. Therefore, diversity is the ability to recognize how to relate to those who are different groups from our own. These include race, classRead MoreBenefits Of Diversity And Inclusion1657 Words   |  7 PagesIntroduction Diversity and inclusion are hot topics in today’s business world. While treating individuals fairly and equally is a social imperative, it is also extremely important to the success of a business. With the changing demographics of society and its affect on the American workforce, organizations must truly embrace diversity and inclusion. â€Å"For companies to succeed in the global marketplace, they must make the most of the full range of their people. Companies must attract and retain theRead MoreDiversity and Inclusion Paper1085 Words   |  5 PagesThinking About Diversity and Inclusion Paper SOC/315 December 15, 2010 Professor Dr. Lorthridge Introduction This paper will discuss and focus on the four dimensions of diversity: ethnicity, gender, differences in skills, abilities and personality traits and how they have an impact in my workplace. To be able to go further in this paper one should understand the definition of diversity. Diversity is a variety between people associated to factors such as culture, employment status, educationRead MoreImportance Of Diversity And Inclusion1793 Words   |  8 Pages Diversity and Inclusion Diversity and Inclusion is a field within Human Resources that focuses on ensuring the cultural sensitivity as well as the cultural inclusion within an organization (RBC, n.d.). More specifically, diversity is both including and respecting differences of ethnicity, gender, age, national origin, disability, sexual orientation, education, and religion (RBC, n.d.). As where Inclusion is the state of being valued, respected, and supported regardless of what diverse background

Good Friends in Of Mice and Men by John Steinbeck Essay

Good friendships make life easier. Of Mice and Men, by John Steinbeck, is about two men, George and Lennie, who go on various journeys in order to get a job. Although George would consider Lennie to be his closest friend, he ultimately ends up shooting and killing Lennie. George did this, not out of hatred, but rather out of protection. A good friend will always want what is best for one another. Steinbeck uses his protagonists’ friendship in order to show that true friendship can help make any of life’s hardships less difficult. Strong friendships have the power to make people’s lives better. George and Lennie travel together and eventually live together, resulting in a strong bond between them. George cares for Lennie and he makes sure†¦show more content†¦Lennie remains optimistic through his disabilities by staying confident and knowing that if he can reach his goals, George can as well. When George needs something, Lennie is there for him because he knows they have a special bond. Lennie also needs good advice from George because, without it, he is incapable of making the right decisions for his future. George and Lennie’s bond for each other is very strong, â€Å"Together, they form a family unit† (Siegel).George and Lennie demonstrate how they try to achieve their goals by working together. Ultimately, George and Lennie’s complement each other well, providing their opposite strengths in situations in order to help them lead a better life. A good friendship is needed to survive through tough times. Lennie respects George because George gives him comfort. George cares for Lennie so much that he considers him to be part of his family: â€Å"George said, he’s my cousin. I told his old lady id take care of him. He got kicked in the head by a horse when he was a kid† (Steinbeck 22). Aside from comfort and advice, Lennie also needs George because when he gets in trouble, George always manages to find a way to help him get out of it. When Lennie had got in trouble in Weed, George stays by his side and gives him advice that helps remain safe and calm. George has many opportunities to leave Lennie and change his lifestyle, but he needs Lennie just as much in order to help him through his own hardships. Lennie looksShow MoreRelatedLennie and George in John Steinbecks Of Mice and Men Essay1010 Words   |  5 Pages John Steinbeck wrote the play Of Mice and Men in 1937 (Steinbeck). It is a play about two ranch workers who do not have the best of luck. The two workers were named George and Lennie. George was a more small bodied man. His partner Lennie was a giant among average sized people. They are on the road going place to place working numerous jobs. Lennie has a learning disability. The two work hand and hand. George is there to keep Lennie out of trouble. Lennie in a way helps keep George together. SometimesRead More John Steinbeck Essay1174 Words   |  5 PagesJohn Steinbeck A novelist is someone who writes novels, or writes a fancy work of fiction which often has a complicated plot, many major and minor characters, a significant theme, and several varied settings. A novelist will use literary devices such as characterization, tone, symbolism, imagery, and figurative language. John Steinbeck, an American novelist, uses many literary devices such as metaphors, similes, imagery, and figurative language along with excellent descriptive words to developRead MoreAmerica Is Home To Many Great Writers Whom Come Different1709 Words   |  7 PagesAmerica is home to many great writers whom come different backgrounds. American authors like John Steinbeck who add biographical elements into their pieces of writing. John Steinbeck, one of the most honorable authors of time, is known for receiving Nobel Prize, California commonwealth club medal, Pulitzer Prize, and other great accomplishments towards publishing sixteen novels. Steinbeck’s realist style of w riting and life experiences impacting his life show the reader he’s been through a lot inRead MoreAnalysis of Of Mice and Men by John Steinbeck1493 Words   |  6 PagesAnalysis of ‘Of Mice and Men by John Steinbeck ‘Of Mice And Men by John Steinbeck is a classic novel, tragedy, written in a social tone. The authorial attitude is idyllic, however, as the story develops it changes into skeptic. It is evident that Steinbeck knew the setting and places he is writing about. In my opinion Steinbeck drew the subject matter from his own experience of working on ranches, he was interested in special kinds of relationships among men working on ranches with him. ThereRead MoreEssay about Analysis of ‘Of Mice and Men by John Steinbeck 1488 Words   |  6 PagesAnalysis of ‘Of Mice and Men by John Steinbeck ‘Of Mice And Men by John Steinbeck is a classic novel, tragedy, written in a social tone. The authorial attitude is idyllic, however, as the story develops it changes into skeptic. It is evident that Steinbeck knew the setting and places he is writing about. Read MoreCharacter Analysis Of Mice And Men910 Words   |  4 PagesJohn Steinbeck sets the scene of his novella, Of Mice and Men, in the Salinas River Valley, a few miles south of Soledad. The time period of the novella is the 1930’s during the Great Depression. The Great Depression began in 1929 after the U.S. had a major financial crisis. People lost all of their money and their homes when the stock market crashed. Many men became migrant farm workers who would travel from farm to farm, working for just enough money for food and a few belongings. John SteinbeckRead MoreNew Log : Of Mice And Men892 Words   |  4 PagesSeptember 30, 2015 New Log: Of Mice and Men by John Steinbeck John Steinbeck creates an odd pair of men to assume the role of protagonist in his novel, Of Mice and Men. George, a small and quick-witted man, is the dominant personality. Lennie, his clumsy companion, is a character who displays a child-like demeanor and is often compared to an animal throughout the novel. The couple’s relationship closely resembles that which is often found between a father and son. Steinbeck later introduces Curley,Read MoreRacial Discrimination In John Steinbecks Of Mice And Men899 Words   |  4 Pageson a ranch, stuck in a loveless marriage, when all you really want is someone to talk to. What about having to kill a friend, and bury all chances of breaking free from the life of an average migrant worker? How would anybody feel? These situations in John Steinbecks Of Mice and Men illustrates two key points throughout the story; discrimination and loneliness. In Of Mice and Men, Crooks, the black stable hand, is the definition of racial discrimination. He is isolated from the community of whiteRead MoreOf Mice And Men Modernism1619 Words   |  7 Pages One of John Steinbeck’s early drafts of his most famous work, Of Mice and Men, was eaten by his dog. This did not discourage him from finishing it and going on to write more stories and novellas, becoming one of America’s most beloved authors. John Steinbeck is seen as a very important important figure of the Modernist literary period; known for his observations of human conditions during the Dust Bowl era, mainly his book Of Mice and Men which truly takes a detailed look at the Great DepressionRead MoreThe Portrayal of Society in Of Mice and Men and The Outsider Essay1430 Words   |  6 Pages World literature; self taught language Hungarian: After reading the two books for my world literature, of mice and men and the outsider I decided I will compare the two books on the topic choice; portrayal of society in the literature studied. This includes points such as: Meursault and Lenny not being accepted in society for who they are because they are different then others; another point would be there is a lot of violence within societies. The rest will be presented further on in my essay

Pilgrimage Tourism Free Essays

India being a country of the pious is dotted with sacred pilgrimage centres. Thus, pilgrimage tourism in India is extremely popular. Great religions like Hinduism, Jainism, Buddhism and Sikhism have originated on the Indian soil. We will write a custom essay sample on Pilgrimage Tourism or any similar topic only for you Order Now The Hindu religion and place of worship are always unique to the rest of the world. To the outside world India is an orthodox country. The superstitions and the religious related aspects dominated the life in India. Despite this, Indian Philosophy preaches that every man should observe universal brotherhood and in order to achieve this noble objective, every true believer in God will have to visit sacred places and attend discourses of great people. Pilgrimage is recognized as widespread religious practice based on the belief that certain places are more powerful than others. Tirumala is one of the rare places in the globe where people gather in great number, from various parts of the world, irrespective of caste, creed, race, language and nationality. The temple beginnings are shrouded in great antiquity and its origins are still a matter of scholarly debate. Sangam literature, the earliest of Tamil literature (dated between 500 BC to AD 300) mentions Tirupati as Tiruvengadam which used to form the northernmost frontier of the Tamil kingdom. Tirupati was richly endowed by the kings and emperors of various dynasties. The Pallavas of Kanchipuram (9th century AD) Cholas of Tanjore (10th century), Pandyas of Madhura (14th century AD) and Vijayanagara kings (14th 15th centuries) were committed devotees of Sri Venkateswara. Annually 2. 5 Crore pilgrim have darshan of the Lord. In the 2009-10 a total of 2. 5 Crores of pilgrims have had darshan of the lord. So the TTD tying do their best to provide amenities to the pilgrims. The pilgrimage tourism in Tirumala has emerged as an instrument of income and employment generation. In this article an attempt is made to study the impact of pilgrimage tourism on Tirumala. How to cite Pilgrimage Tourism, Essay examples

Physics free essay sample

A thermometric property is a physical property that changes in a known way with temperature, and can therefore be used to measure temperature. The substance used as a thermometer must have a property that varies proportionally / linearly with temperature. [ In other words: When objects are heated or cooled, their temperatures change, along with some of their properties, these properties are known as Thermometric Properties. ] Two commonly used thermometric properties are resistance and length. 2. Water is generally used to determine the fixed point on a thermometer. The fixed points are freezing point (32oF/0oC) and boiling point (212oF/100oC). Upper fixed point is the temperature of pure water boiling at normal atmospheric pressure. Lower fixed point is the temperature of a mixture of pure ice and pure water at normal atmospheric pressure. Generally the upper and lower fixed points of a thermometer are determined with considering the freezing point and boiling point of water. In Celsius thermometer, lower fixed point is 0 ? C and upper fixed point is 100 ? C, in Fahrenheit thermometer lower fixed point is determined as 32. They need no power source. Disadvantages: If it so happens that the thermometer falls and breaks, a spill of mercury in a doctors office, school or home environment poses significant health hazards. Exposure could result in serious damage to kidneys, lungs, brain, heart and immune system. Digital Thermometers Digital thermometers use thermocouples or thermistors to sense the change in temperature and display the temperature on a digital display. There are a number of different types of digital thermometers therefore the temperature ranges vary. Advantages: Digital thermometers are easy to use. When using a digital thermometer you won’t be exposed to mercury. Disadvantages: Dead batteries are a drawback of digital thermometers. It is hard to determine how much power is left in a digital thermometers battery, which in turn makes it difficult to predict when it will die. Because they are specialized batteries, it is hard to locate replacements. And close-to-dying batteries will provide inaccurate readings. Outdoor Thermometers Outdoor thermometers are used to measure the temperature of the surrounding air. Temperature ranges from -58of/-50oc to 158of/ 70oC. Advantages: Low battery consumption. High stability and accuracy. Disadvantages: If an object is considerably close to the outdoor thermometer it can influence the actual temperature of the surrounding air. Thermocouple Thermometer A thermocouple thermometer is a device for measuring temperature consisting of a pair of wires of different metals or semiconductors joined at both ends. One junction is at the temperature to be measured, the second at a fixed temperature. The electromotive force generated depends upon the temperature difference. Temperature ranges from 200oC to 2,600oC. Advantages: It is very responsive to rapidly changing temperatures due to its low thermal capacity. The low thermal capacity is due to its low mass and metals are good conductors of electricity. As the output is an electrical impulse it can be connected to a suitable electrical equipment for checking rapid or sudden temperature changes. Disadvantages: It is extremely expensive. Generates low signal which is non-linear Must be assembled with care to avoid considerable noise levels. II. Thermal Expansion Thermal expansion is the tendency of matter to change in volume in response to a change in temperature. When a substance is heated, its particles begin moving more and thus usually maintain a greater average separation. Materials which contract with increasing temperature are rare; this effect is limited in size, and only occurs within limited temperature ranges. The degree of expansion divided by the change in temperature is called the materials coefficient of thermal expansion and generally varies with temperature. 1. Thermal Expansion of Solids Heating a solid makes it particles vibrate vigorously. As these vibrations become larger the molecules are pushed further apart and the solid expands slightly in al directions. Thermal Expansion of Liquids Like solid liquids also expand on heating. Since liquids do not have a definite shape they can have only volume expansion. Since the container containing liquid also expands with heat therefore Real Expansion = Apparent Expansion + Expansion in a liquid of liquid of Container . When a liquid is heated in a container, the container expands first and therefore the level of liquid decreases since the expansion of liquid is more than that of solid, therefore after sometime the liquid expands and its level increases. The lava lamp above illustrates the differential thermal expansion in liquids. Thermal Expansion of Gases A gas expands when heated and condenses when cooled. Charles Law predicts a four-fold decrease in the volume of a gas that is cooled from room temperature to the temperature of liquid nitrogen (77 K). If the gas inside the balloon condenses into a volatile liquid at or around 77 K, the volume change will be even larger. Removing the balloon exposes the cold balloon to higher temperatures. The resulting thermal expansion fills the balloon to its original size again. Liquid nitrogen or dry-ice/acetone is poured over a balloon. 2. Thermal Expansion Real-life applications Engine Coolant Another example of thermal expansion on the part of a liquid can be found inside the cars radiator. If the radiator is topped off with coolant on a cold day, an increase in temperature could very well cause the coolant to expand until it overflows. In the past, this produced a problem for car owners, because car engines released the excess volume of coolant onto the ground, requiring periodic replacement of the fluid. Later-model cars, however, have an overflow container to collect fluid released as a result of volume expansion. As the engine cools down again, the container returns the excess fluid to the radiator, thus, recycling it. This means that newer cars are much less prone to overheating as older cars. Combined with improvements in radiator fluid mixtures, which act as antifreeze in cold weather and coolant in hot, the recycling process has led to a significant decrease in breakdowns related to thermal expansion. Building Settlement All pipes and vessels expand and contract in direct proportion to a temperature change. Whenever pipes are routed across structural movement joints in buildings, roads, bridges etc. , they will be subjected to displacements. Expansion amp; building settlement products are installed to control this thermally induced expansion and contraction, and pipe movements caused by structural settlement. Pipe Solutions are able to offer technical advice or a full design, for any expansion or building movement problem. Expansion Joints are used to physically compensate for the movements of the pipework. They can be designed to suit almost any combination of working temperature, pressure and movement capability. 3. The Design of a Bimetallic Strip A bimetallic strip is used to convert a temperature change into mechanical displacement. The strip consists of two strips of different metals which expand at different rates as they are heated, usually steel and copper, or in some cases brass instead of copper. The strips are joined together throughout their length by riveting, brazing or welding. The different expansions force the flat strip to bend one way if heated, and in the opposite direction if cooled below its initial temperature. The metal with the higher coefficient of thermal expansion is on the outer side of the curve when the strip is heated and on the inner side when cooled. The sideways displacement of the strip is much larger than the small lengthways expansion in either of the two metals. This effect is used in a range of mechanical and electrical devices. In some applications the bimetal strip is used in the flat form. In others, it is wrapped into a coil for compactness. The greater length of the coiled version gives improved sensitivity. The operation of the bimetallic strip relies on the different expansions rates of the two metals to temperature change ( the different coefficients of thermal expansion of the metals). One of the many uses for bimetallic strips is in electrical breakers where excessive current through the strip heats it and bends it to trip the switch to interrupt the current. Bimettalic strips are also used as thermostats.