Does temperature affect light?

Question

Does light passing through a warm environment behave differently than light passing through a cold environment?

Is there any interaction between temperature variance and light energy, or does it simply keep going without a problem?

Or does the added energy into the heated environment affect it somehow? If so then how?

This is with density aside, both environments have the same density with the same structures, the only difference is temperature.

Answer 1

When a light is passing through a medium and the medium is affected by temperature than it will certainly affect the movement of light as the density of the medium changes with temperature threfore you cannot say the density will not be affected if temperature is changed. Moreover if light is propagated in vaccum than there will be no change in light energy as it is a electromagnetic wave.

Answer 2

For the most part no.

However it can affect light fixtures themselves, depending on the conditions that you expect a light fixture to be exposed to, there are special cold-weather ballasts, etc.

Answer 3

I know that in water temp change really effects visibility. Fresh water fish can see fishing line 20% better for every 10 deg drop in temp.(or something to that effect).