Hindu Achievements in Exact Science: A Study in the History of Scientific Development c15.15

c15.15

(*a*) Heat:
(1) Light and heat were known to Kanada as different forms of the same substance.
(2) Solar heat was known to Udayana as the source of all the stores of heat.
(3) Heat and light rays were believed by Vachaspati (A.D. 850) to consist of very minute particles emitted rectilineally by the substances.
(4) Rarefaction in evaporation and the phenomenon of ebullition were correctly explained by Shamkara Mishra.