Question

what is meant by scattering of light ? Use this phenomenon to explain why the clear sky appears reddish at sunrise ​






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Answer 1

When a parallel beam of light Passes through a gas, a party of it appears in directions other than The incident direction. This phenomenon is called scattering of light the basic process in scattering is absorption of light by the molecules followed by its re-radition in different directions. The strength of scattering can be measured by the loss of energy in the light beam as it passes through the gas. The strength of scattering depends on the wavelength of light besides the side of particle which causes scattering. If these particles are Smalley than the wavelength, the scattering is inversely proportional to wavelength raise to power four. This is known as rayleigh's law of scattering thus red light is scattered the least and violet is scattered the most

Answer 2

➡Light scattering by particles is the process by which small particles cause optical phenomena, such as rainbows, the blue color of the sky, and halos.
As the distance of travel through the atmosphere increases during dawn and dusk, light is refracted much more than during noon. ... As the shorter wavelengths are scattered, only red light is left, as it has the largest wavelength of the seven colours. Thus the sun appears red during sunrise and sunset.