Concept explainers
To determine: Reason behind the whiteness of the sky.
Answer:
Scattering through the dust particles and the large molecules is the reason due to which the sky looks whitish.
Explanation:
Due to the scattering of light by oxygen and nitrogen, the sky looks blue because these two gases scatter violet light most. As the human eyes are not very sensitive to violet light, scattered blue light dominates the vision.
This is the reason due to which the sky looks blue. But in certain parts of the Earth, the atmosphere contains many dust particles larger than the oxygen and nitrogen molecules. These particles equally scatter the light having a lower frequency. All the light scatters equally, which results mixing of all the light, which results in whitish color.
Conclusion:
Therefore, scattering through the dust particles and the large molecules is the reason due to which the sky looks whitish.
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