New Delhi [India], March 18: Light is closely integrated with our intellectual, philosophical and scientific discourse. The exact nature of light has remained a mystery since we stepped on earth. Newton postulated the corpuscular theory of light according to which, light comprises of a stream of particles. Around 100 years later, results by Young and Fresnel proved that light is a wave. The idea was further put on a solid theoretical foundation by James Clerk Maxwell who discovered that light comprises of pulsating electric and magnetic fields which propagate in space.