Question:

Why is light emitted from the sun looks yellowish when observed?

by  |  earlier

0 LIKES UnLike

We know for a fact that the sun emits (white) light but if we observe the sun light it emits tends to be more to a yellow color.

Question is why? We should observe it as purely white but what contributes to this?

I'm guessing its some substance in the Earth's atmosphere.

Also, I remember a topic in Physics that I had about absorption spectra, does this relate to my question?

Thanks in advance.

 Tags:

   Report

5 ANSWERS


  1. it likes if we shout the light of lamp to the side of glass. we can get to look the difraction. it is the same to the earth, the light shout the side of the earth, we can get the difraction. the substance is atmosphere such as N, CO2, O2, etc.


  2. It's an optical illusion. Sunlike is exactly the same colour as the clouds; it is white. We just think it is yellow. If we measure the light with a meter, we find it is white.

    If either of the previous answers were correct, then the clouds would look yellow as well.

  3. RIH and the Wolf are both right.  Sunlight is peaked in the green, and the atmosphere does scatter the blue more than the lower frequencies (which is why the sky is blue), pushing the peak toward yellow.  But that is a small effect compared to what RIH said.  The human eye is most sensitive to the color green.  In fact, it is quite a bit more sensitive to green than to red, which is why green laser pointers looks so bright (well, they usually are more powerful too).  So the sun looks a little yellow-green because of that.  By the way, it is not coincidence that the suns emissions are peaked in the green and our eyes sensitivity is also peaked in the green.  Oh, and clouds also have a color dependence when it comes to the light they reflect, so you would not expect them to be the same color as the sun, just like a red car illuminated by sunlight is not the same color as the sun.

  4. the peak of the intensity curve for the sun is at a wavelength of about 500nm which is in the blue-green part of the spectrum

    the earth's atmosphere scatters shorter wavelength light more than longer wavelength light, so the blues and greens get scattered away in all directions (we call them 'the sky'), leaving yellow as the peak in the spectrum in the direction of the sun

    edit - ignore moron below

    ,.,.

  5. It is true that the sun look yellowish, but not because the light that reach the eye is not wihte but because the eye is most exited by the light that hv the color of the light green 2 yellow, that's why u see the sun as nearly yellow 2 partialy light green

Question Stats

Latest activity: earlier.
This question has 5 answers.

BECOME A GUIDE

Share your knowledge and help people by answering questions.