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Especially on a cloudy night.

2007-06-24 12:41:15 · 4 answers · asked by dexter_deedee 1 in Science & Mathematics Earth Sciences & Geology

4 answers

Certainly - it is refraction. White light is composed of all the colours. When it passes through a prism (including water droplets), the light separates into the component colours, depending on the refractive index of the colour of the light. A good example is the rainbow. The refractive index for blue light is larger than for red light, so the blue light bends farther than red light in a rainbow, meaning it ends up on the bottom of the rainbow as we view it.
Similarly, in the evening, when the sun is closer to the horizon, the blue or violet light is refracted upwards more than red or orange, with the atmosphere acting as a prism. The red or orange light is refracted less and therefore remains lower for our viewing pleasure.

2007-06-24 12:56:59 · answer #1 · answered by Bernie V 1 · 0 0

The Sky goes through a transitional colour fade from normal white to red.

It happens

2007-06-24 12:46:44 · answer #2 · answered by bacheruete1 2 · 0 0

Well I know when the moon looks orange its pollution.

2007-06-24 12:48:42 · answer #3 · answered by Killer Karamazing 4 · 0 1

refraction friend

2007-06-24 12:44:13 · answer #4 · answered by ♥ Etheria ♥ 7 · 0 0

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