Ask the Experts - Optics

I know why the sky is blue during the day, and why it turns yellowish to reddish at sunrise and sunset. My question is; why doesn't the sky ever look green? Why does the color go from blue to yellow?

What is the Photoelectric Effect?

If, indeed, the speed of light is constant,why is it usually listed for a vacuum?

How was the speed of light determined and who found it, when? How close was the estimate of 186,000 mps to the 'actual' speed of light?

In movies why do wheels of a moving car appear to rotate backwards to the actual direction?

Would not the speed of a light beam headed toward a black hole increase tremendously? We do know it could be bent by the gravity of a star.

What determines the color of large bodies of water (i.e. Ocean/large lakes?)

What would light be like if there was no ability for light to make a rainbow?

What are the wavelengths of the basic colors (Red, Orange, Yellow, Green, Blue, Violet) in the color spectrum?

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Ask the Experts - Optics

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