How does the average speed of light in glass compare with its speed in a vacuum?

the speed of light in glass is 1.52 times smaller than in a vacuum

Explanation:

The speed of light in a medium is given by:

where

c is the speed of light in a vacuum

n is the refractive index of the medium, which is a number always greater than 1.0

From the formula, we see therefore that when light enters a medium, its speed decreases.

In particular, for glass the index of refraction is

n = 1.52

Therefore, this means that the speed of light in glass is 1.52 times smaller than in a vacuum.

the temperature and the pressure affect solubility. temperature affects by changing the properties of the solvent. the increase in pressure increases solubility, the decrease in pressure decreases solubility.

r = ρ x length / area  

ρ = r x area / length  

ρ is in ohm-meters  

in basic units, it is m³kg/s³a²  

i think this is it.