Monday, March 29, 2010

Heat capacity and specific heat

Before discussing about this topic, we need to know the difference between temperature and heat.
Heat is energy form, on other hand temperature is telling about the thermal equilbrium of a body when it touch with another body.
But there is relation between heat and temperature, i.e., represented by thermal capacity.
In order to raise the temperature of the body, it is needed to supply the amount heat to the body.
thermal capacity is defined as the amount of heat supplied to the body to raise the temperature of the body through unity i.e., 1degree centigrade.
If small modification is done in above definition, then we can obtain the definition of the specific heat. So, specific heat is defined as the amount of heat supplied to the unit mass of the body to raise its temperature through unity
In notations, thermal capacity and specific heat is as follows

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