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Scienece Column - Article Example

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Name Professor Course Date This physics column shall explore on the physical properties of day to day materials that are linked with the movements of their components, either atoms or molecules. In particular, the study shall explore on the type of motion referred as “heat.” In addition, the column shall attempt to establish the factors that regulate transfer of heat from one substance to the other, especially when they are brought into thermal contact…
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Scienece Column
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Download file to see previous pages This is all about thermodynamics. In essence, thermodynamics involves the examination of the internal motions of various body mechanisms; or rather it’s a subfield of natural science that involves heat and its relationship to various forms of energy and work. Therefore, heat becomes an integral and essential component of thermodynamics. Virtually, most of the substances that people encounter with in their day to day life consist of body systems of one kind or the other, that is, they either fall under solids, liquids, gases or even light. It is therefore, unsurprising that thermodynamics is a field in physics that comprises exceptional wide variety of applicability. There are numerous thermodynamic experiments used to demonstrate the movement of energy from one substance to another as a result of varying of temperature. This column shall study two of the four forms of thermodynamic experiments discussed in the past few weeks. One of the study experiment that this column shall detail on is 'the meaning of heat and this shall be illustrated using the calorimeter experiment. The second form of thermodynamic experiment to be studied is the Statistical physics lab and this will be based on the concept of thermal energy of randomly moving molecules with heat used as the mode of transfer. Meaning of heat Heat is defined as a form of energy, sometimes referred as thermal energy capable of passing through an object of high temperature to an object with low temperature. The flow of heat is essentially measured using a device known as calorimeter. This device operates in such a way that it is insulated to minimize the loss of heat to the surrounding. Within some essential temperature variance, it is easy to understand the hotness or coldness of something by simply touching it. However, it is unreliable if you place one of your hands in cold water, and the other into hot water, then you plunge both into warm water. You will note the difference, one hand will detect that the water is hot, while the other will experience some cold. In other aspects, when something is too hot to hold or even touch, we usually get an impression of how hot the substance is by approaching it and detecting the radiant heat it emits. if there is an increase in temperature, the substance glows hot. The major problem with such subjective feelings of heat is that, they are different for various persons. If two hands transmit different messages pertaining the hotness or coldness of a substance, how about a group of people? Obviously, they will report varied responses. In illustrating the flow of heat, an experiment was set up, whereby a pan of water was placed on a hot glowing fire and the temperature observed over time. It was noted that, their was steady increase in time, reflecting the transfer of heat from the fire, up to the moment the water started boiling, whereby the temperature remained constant for a long period. The steam emitted had same temperatures as the boiling water. So, what actually happened to the heat transferred from the fire to the pan of water? It was found out that, heat was needed to change the form of water from the liquid to the gaseous form/steam. In-fact, a high amount of heat is required to change the state of water to steam form, approximately 540 calories per gram. This is far much ...Download file to see next pagesRead More
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