4.1 Macroscopic and Microscopic Points of View
The aim and object of science is to describe the behaviour of a system under different physical conditions. A system is a mass of matter which is isolated from its surroundings (in imagination). The system being chosen, the next step is to assign to the system certain physical quantities or parameters which suffer change when the system is interacted from outside. These parameters define the physical state of the system. By equation of state, we mean a mathematical relation which determines some parameters when others change.
In describing the physical state of a system, two points of view are generally adopted—(1) the macroscopic view and (2) the microscopic view. Under macroscopic view, we describe ...
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