HEAT AND THERMODYNAMICS

Thermodynamics deals with various phenomena of energy and related properties of matter, especially the transformation of heat into other forms of energy. An example of such transformation is the process converting heat into mechanical work. Thermodynamics thus plays central role in technology, since almost all the raw energy available for our use is liberated in the form of heat. in this topic we shall their significance and applications.

KINETIC THEORY OF GASES

The behavior of gases is well accounted for by the kinetic theory based on microscopic approach. Evidence in favor of the theory is exhibited in diffusion of gases and Brownian motion of smoke particles etc.

The following postulates help to formulate a mathematical model of gases.

A finite volume of gas consists of very large number of molecules.
The size of the molecules is much smaller then the separation between molecules.
The gas molecules are in random motion and may change their direction of motion after every collision.
Collision between gas molecules themselves and with walls of container are assumed to be perfectly elastic.
Molecules do not exert force on each other except during a collision.

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Mathematic calculation in over life

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