Hindu Achievements in Exact Science: A Study in the History of Scientific Development c15.16
Hindu Achievements in Exact Science: A Study in the History of Scientific Development c15.16
- Language
- English
c15.16
(*b*) Optics:
(1) The phenomena of translucency, opacity, shadows, etc., were explained by Udyotakara.
(2) The angle of incidence was known to be equal to the angle of reflection. This was known to the Greeks also.
(3) The phenomenon of refraction was known to Udyotakara.
(4) The chemical effects of light rays were known to Jayanta.
(5) Lens and mirrors of various kinds, spherical and oval, were used for purposes of demonstration. Light rays were focussed through a lens on a combustible like paper or straw. (The making and polishing of glass was a great industry in India. According to Pliny the best glass was that made by the Hindus.)