Question

Why is the color of clear sky blue?

Answer 1

the blue color of the sky

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The color of the sky is due to the property of dispersion of light the white light of the color before reaching the earth's surface gets dispersed into its 7 components VIBGYOR the molecules present in the atmosphere are capable of scattering only the light with the shortest wavelength and hence red light won't get scattered

As the light that we get from sun is white in color and due to atmospheric refraction splitting up of white light takes place and the light with the longest wavelength gets lost in the space and blue and violet has the shortest wavelength but the intensity of blue will be much more than that of violet which makes us see the sky blue in color and our eyes are more sensitive to blue light

Answer 2

Explanation:

the scattering of light in sky gives blue colour only but not other colours because our atmosphere contains different types of molecules and atoms. the reason for blue colour of sky is due to the molecules of N2 and O2. the sizes of these molecules act as scattering centres or scattering of blue light. it is experimentally observed that the intensity of scattered light depends on angle of scattering. the intensity is maximum at 90° angle of scattering. this is the reason for appearance of clear blue sky when we look at the sky at the direction perpendicular to the direction of sun rays. if our angle of view is changed the intensity of blue colour also changes.