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Section Three
Physics Section Physics deals with general properties and forces associated with gross and fine matter. It also deals with various natural energies like heat, electricity, sound, light, etc. Where do these energies arise in substance ? What is the nature and function of these energies? Can we utilise them for more useful purposes ? These and many other questions encourage the scholars to study them in a fundamental way. There has been keen curiosity about them in non-experimental canonical periods. Like other Indian philosophies, Jaina canons and later philosophical literature contains many related phenomena about them. The canonical period varies between a few centuries B. C. to about 10th century A. D. This chapter is an attempt to collect and estimate these contents with reference to current knowledge.
The general properties have already been described under Chemistry section. As the sciences depend for their crediblity upon weights and measures, it will be attempted first. This will be followed by descriptions about various energies in canons.
This section contains four chapters concerning : (i) Weights and Measures-1 : Mass and Volume Units (ii) Weights and Measures-2 : Length and Time Units (ii) Contents of Physics-1: Heat and Light
(iv) Contents of Physics-2 : Sound, Electricity and Magnetism.
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