InterviewSolution
Saved Bookmarks
InterviewSolution
| 1. |
Why the sun appear red while sunset and sunrise. Explain? |
|
Answer» Thanks Due to atmospheric refraction the blue colour scatter at different layers of atmosphere due to the smaller wavelenght and red.colour pigment we see due to the higher wavelength This is because of Rayleigh scattering which causes Diffuse sky radiation. The Rayleigh scattering is inversely proportional to the fourth power of wavelength. This means light with longer wavelengths(red and yellow) are scattered very less(or not scattered away) and hence reaches the observer.When the sun is near the horizon, the scattering is more due to the large volume of air that the sunlight must pass through. Since the scattering is more , all the lights of shorter wavelengths are virtually removed showing only the mixture of lights with longer wavelengths(yellow+red = orange). |
|