Understanding Scattering of Light in the Atmosphere

In summary, when light is scattered by the atmosphere, it is scattered with equal speed in all directions relative to the atmosphere. This is confirmed by the Michelson-Morley experiment, which showed that light traveling in different directions always goes at the same speed. This holds true for the media from which the light is scattered, as the important processes in the atmosphere are elastic and do not result in energy transformation. However, in practice, variations in atmospheric humidity and other non-uniformities may affect the uniform propagation of light.
  • #1
hartlw
72
0
When light is scattered by the atmosphere, is it scattered with equal speed in all directions relative to the atmosphere?
 
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  • #2
yes. individual photons will continue to move at velocity "c"...and the light will propagate uniformely if you assume the atmosphere itself is uniform...likely it will vary in pracice due to differences in atmospheric humidity and other non uniformities...

The important processes in the atmosphere (Rayleigh scattering and Mie scattering) are elastic. No energy transformation results, only a change in the spatial distribution of the radiation.

http://en.wikipedia.org/wiki/Diffuse_sky_radiation
 
  • #3
Naty1

Thank you.
 
  • #4
If light is scattered by the atmosphere with equal speeds in all directions relative to the atmosphere, isn't this all that MM is confirming?
 
  • #5
Well, I guess you could say that, yes, the MM experiment confirms that light traveling in different directions always goes the same speed.
 
  • #6
russ_watters said:
Well, I guess you could say that, yes, the MM experiment confirms that light traveling in different directions always goes the same speed.


Would it be legitimate to add "with respect to the media from which it was scattered?" (MM was not in a vacuum).
 

FAQ: Understanding Scattering of Light in the Atmosphere

What is scattering of light in the atmosphere?

Scattering of light in the atmosphere is the process by which particles in the air, such as dust, water vapor, and gas molecules, interact with and change the direction of light as it passes through the atmosphere.

What causes scattering of light in the atmosphere?

The main cause of scattering of light in the atmosphere is the interaction between light and particles in the air. Different types of particles cause different types of scattering, such as Rayleigh, Mie, and non-selective scattering.

How does scattering of light affect the color of the sky?

The scattering of light in the atmosphere is responsible for the blue color of the sky during the day. This is because blue light is scattered more than other colors due to its shorter wavelengths, making it more visible to our eyes.

What role does the Earth's atmosphere play in scattering of light?

The Earth's atmosphere plays a crucial role in scattering of light. Without the presence of gas molecules and particles in the air, there would be no scattering, and the sky would appear black instead of blue.

How does scattering of light impact our daily lives?

The scattering of light in the atmosphere has several impacts on our daily lives. It helps regulate the Earth's temperature, contributes to the color and appearance of the sky, and affects the visibility of objects, such as stars and planets, at night. It also plays a role in the formation of rainbows and other optical phenomena.

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