All Questions
6
questions
2
votes
2
answers
134
views
Why can't we see green color in the sky? [duplicate]
From sunrise to sunset we can see a variety of colors in the sky.
For example, during morning the most dominant color is blue whereas during sunset orange,red,yellow and there shades are more dominant....
- 517
2
votes
2
answers
146
views
What are some liquids with high ranges of refractive index with change in temperature?
I need to run an experiment on the effect of temperature on refractive index of a liquid, and in order to make the change most visible and have the lowest percent uncertainty I need the change in ...
- 21
-1
votes
1
answer
205
views
Factors affecting Refractive index
I have a doubt that with increase in temperature the refractive index is decreasing but refractive index of ice is lower than water????
0
votes
3
answers
2k
views
How does change in Temperature affect Refractive Index/Optical Density of a medium?
In my school book its stated that:
With increase in temperature, the speed of light in a medium increases, so the refractive index of medium decreases.
I read in another answer that:
Refractive ...
- 1,168
0
votes
1
answer
262
views
Speed of light at low temperatures
From my understanding the temperature in a black hole nears absolute zero. Also some experiments have shown that light can be slowed. 1) is this true?
Matter cannot reach the speed of light, yet light ...
- 1
1
vote
1
answer
219
views
Question about the refraction of Fresnel lenses
If you line up the suns rays parallel to a Fresnel lens, the light is concentrated, and the focus directly underneath. However, what happens if the sun is off to the side, making the light hit at an ...
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