Published Paper Details:

According to Waves optics, the velocity of light remain constant inside denser medium, if the Frequency increases then its wavelength decreases, there by adjusting its velocity. Also, refractive index of medium depends on wavelength of light, for red color refractive index is less than that of violet color, as per Cauchy�s formula. So the speed of red color is more than violet in denser medium. But this is not true; the speed of all colors remains same (c) inside the crystal between two lattice points. When light enters the denser medium, the photons are being absorbed & emitted continuously. The speed of photon between two consecutive absorption or emission is 3 � ?10?^8 m/s , but due to difference in number of absorption and emission of various colors (photons) by atoms, they spent different times inside the crystal. Since massive photon suffers more absorption and emission. Due to this they spent more time inside the transparent medium. If we consider particle nature of light and consider photon as a particle of light, velocity of photon does not remain constant at all the point inside the crystal. Between two lattice points the velocity of photon is greater than v = 2 � ?10?^8 m/s for glass medium and at the lattice point during absorption and emission, it is less than v = 2 � ?10?^8 m/s. The average velocity, not constant velocity of photon in the glass is v = 2 � ?10?^8 m/s. So the expression for refractive index for photon will be � = c/l t ,where �l� is total length path of denser medium and �t� is the total time taken to cover the length �l�. So the change in velocity is not due to change in wavelength of photon.