Question #9c493
2 Answers
It will not change path if it is incident along the normal
Explanation:
When light moves from say air into glass, if its angle of incidence is
Yes.
Explanation:
It depends on what you call the "speed of light".
Being an EM wave, it has two definitions of velocity.
- Phase velocity :
Given as the velocity with which the phase front of the EM wave moves, This is the regular "velocity" we talk about. In space it is
2 . Group velocity:
This is how the "shape" of the wave travels.
By Geek3 - Own work;This mathematical image was created with Mathematica, CC BY 3.0, https://commons.wikimedia.org/w/index.php?curid=14772688
Now depending on how the medium "reacts" to an incident light wave, this velocity can be decreased, and a beam has actually been stopped.
Interesting video: enter link description here
There you go .. it can be "slowed down", a lot .
Thank you for asking this.