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Why sun appear red at sunrise and sunset ?

Answer»

DAY TIMESWhy do the sun and the sky turn red during sunrise and sunset?Jun 29, 2003, 00:48 IST WhatsappFacebookTwitterEmailAAAccording to Rayleigh''s law, the intensity of scattered light varies INVERSELY as the fourth power of its wavelength. Sunlight CONSISTS of seven colours. Of these, red has the maximum wavelength. During sunrise and sunset, the rays have to travel a larger PART of the atmosphere because they are very close to the horizon.Therefore, light other than red is mostly scattered away. Most of the red light, which is the least scattered, enters our eyes. Hence, the sun and the sky appear red.— Chandreyee Datta, KOLKATA



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