Newton's Corpuscular Theory
Category : JEE Main & Advanced
(1) Newton thought that light is made up of tiny, light and elastic particles called corpuscles which are emitted by a luminous body.
(2) The corpuscles travel with speed equal to the speed of light in all directions in straight lines.
(3) The corpuscles carry energy with them. When they strike retina of the eye, they produce sensation of vision.
(4) The corpuscles of different colour are of different sizes (red corpuscles larger than blue corpuscles).
(5) The corpuscular theory explains that light carry energy and momentum, light travels in a straight line, Propagation of light in vacuum, Laws of reflection and refraction (6) The corpuscular theory fails to explain interference, diffraction and polarization.
(7) A major prediction of the corpuscular theory is that the speed of light in a denser medium is more than the speed of light in a rarer medium. The truth is that the speed of the light is smaller in a denser medium. Therefore, the Newton's corpuscular theory is wrong.
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