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Which phenomenon explains the blue color of the sky?
Refraction
Reflection
Scattering
Dispersion
Scattering
The blue color of the sky is explained by Rayleigh scattering, where sunlight entering the Earth's atmosphere encounters gas molecules and small particles. Shorter wavelengths of light (like blue and violet) scatter in all directions much more effectively than longer wavelengths (like red and yellow).
The blue color of the sky is explained by Rayleigh scattering, where sunlight entering the Earth's atmosphere encounters gas molecules and small particles. Shorter wavelengths of light (like blue and violet) scatter in all directions much more effectively than longer wavelengths (like red and yellow).
Think of light as tiny waves hitting small obstacles; smaller ripples splash and scatter in every direction around tiny pebbles far more easily than large, heavy waves do.
VIBGYOR: Shorter wavelengths at the violet/blue end scatter more.
IтИЭ╬╗41тАЛ тАФ Rayleigh scattering intensity formula
According to Rayleigh's law of scattering, the intensity of scattered light is inversely proportional to the fourth power of its wavelength, represented as IтИЭ╬╗41тАЛ. Because blue light possesses a significantly shorter wavelength than red light, it undergoes intense scattering by atmospheric nitrogen and oxygen molecules.
Shorter wavelengths are scattered much more than longer wavelengths.
Rayleigh scattering is responsible for the blue appearance of the daytime sky.
Human eyes are more sensitive to blue light than violet light, which also explains why the sky appears blue rather than violet.
Blue appearance of the clear sky
Reddish appearance of the sun during sunrise and sunset
Option A (Refraction) is the bending of light as it passes from one medium to another.
Option B (Reflection) is the bouncing back of light from a surface.
Option D (Dispersion) is the splitting of white light into its component colors, seen in prisms.
C is correct тАФ The blue color of the sky is a direct result of the scattering of sunlight by atmospheric gases.
Always remember that scattering intensity depends inversely on the fourth power of wavelength, which is why red light (longest visible wavelength) penetrates through fog and smoke best.
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