Light in medium, time gets affected?

AI Thread Summary
When light passes through a medium with a refractive index, its speed decreases compared to its speed in air due to the interaction with the medium's electric fields. This reduction in speed raises the question of whether time is affected within the medium, potentially slowing down or speeding up. However, the consensus suggests that the speed of light's reduction does not directly alter the flow of time. Understanding the distinction between group velocity and the speed of individual photons is crucial for grasping these concepts. Further reading on group velocity and its implications is encouraged for a deeper understanding.
A Dhingra
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hi ...
when a ray of light passes through a medium of some refractive index, then due to cancellation of electric fields the speed of light reduces inside the medium as compared to air. with this thought in mind, can we say that, as the speed of light has got reduced , there is something happening to the motion of time inside the medium. either time slows down or becomes faster.
Is that reduce in speed of light affects the time?
( i guess it does not, but i am not sure... so please provide proper reason behind the answer)

thanks
 
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Please start by reading the PF FAQ thread in the General Physics forum.

You also need to learn the difference between group velocity, and the velocity of photons in such a medium.

Zz.
 
the explanation about "Do Photons Move Slower in a Solid Medium?" was amazing...
 
where can i get to read about group velocity and its relation to this...
 
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