- #1
rushil
- 40
- 0
According to Special Relativity, A particle with rest mass = 0 can exist if and only if it is moving at the speed of light. A photon is a particle which comes into this category. However, when light travels in a medium it's speed is always reduced.
Does this contradict relativity? What I want to ask is that when light travels at a lower speed in some medium. do photons exist and why? Why do photons 'seem' to exist at speeds less than that of the speed of light.
Does this contradict relativity? What I want to ask is that when light travels at a lower speed in some medium. do photons exist and why? Why do photons 'seem' to exist at speeds less than that of the speed of light.