Light is travelling in quartz, which has an index of refraction of 1.458. How fast does light travel in quartz?
February 20th, 2023
The definition of the index of refraction is
##n = c / “v”##
where ##c## is the speed of light in a vacuum (##3 xx 10^ 8## ##m##/##s##)
and ##”v”## is the speed of light in the material.
See if you can use this to figure the speed of light in quartz, since you know the index of refraction.