of the day Bella Of the sky Towards When you look See Will go That Blue Color Become Sit down There is. Well , the sky Blue Of color Is Why ? A lot Before Since Of man I think so This Of the question Rise Was done. But Many Century Until Wise - Guni People A lot Account Kasheo That The answer Get out To do Couldn't. Of The answer Yes , the earth Around In the atmosphere Floating Small Small Dust There are. The sun From The light On earth To come Time 3 Particles By Scattered Become Goes. And Blue Of color Light Wavelength Less Says Rayleigh of scattering Formula According to That Most More Scattered Is. Whose Because Of the day In the light To the sky Blue Shows. And At night Bella Sunlight Absence Because Scattering It doesn't happen And The sky Black Shows. Likes Is n't it? More Explanation Need ? That's right There is. First Easy One Question Well done _ Of the sun Light Color What ? White ! Yes Many Era Until Everyone This The idea Was. Sir Isaac Newton Test By Show That The sun From Found White The light Actually Seven Different Of color Adjustment. Each Different Of color Light Wavelength The value Different. Red Light Wavelength Most More And Purple Of color Light Wavelength Most Less. 1859 In John Tyndale Excellent A Test Does . A Of water In Milk And Soap Mixed Give. This time Of liquid Of the pot On one side The light If dropped , see Goes The other Side From Light Blue Light The rays More Scattered Being (Tyndall Effect) . Transparent Of water In Located Soap, Of milk Tiny Particles Light This Scattering Creation By Of A few Years Later Reilly A. The subject With More Details Research By Light Scattering New A Theory Discovery Which is called Rayleigh scattering Familiar. According to Rayleigh scattering , viz Scattering Wavelength ( IV) Power ) disproportionate. More Woodpecker Become Gone ? Easy In language Of Money Yes , that Light Wavelength Less That More Scattered Will be And Blue Light Wavelength Red Light From A lot Less. And Purple Light Waves Length Most Less (of visible light ) In ) . Now Question Yes , in the atmosphere So Of water Vapor particles Floating Walk ! Then Of the sky Blue Of color For Just Dust Why Responsible To do Is it Funny Matter Yes , Tyndale And Reilly Both of you Of course Thought , vapor , dust All Nothing Of the sky Color Of change For Responsible. But Next Scientists Research By See That , if Vapor particles Scattering Because If so , then From place to place Humidity , fog Etc. Of difference Because One One In place Of the sky Color One One Like Show it !!! At the same time They This In conclusion Arrived Be That , in the sky Different Different Level Located Oxygen And These are the molecules of nitrogen This Scattering - Scattering Causing To the sky Blue To show In favor of Enough ! The same With 1911 In Einstein When His scattering of light from molecules Theory Revealed Does Then Them This Ideas More More Mature Become Rose. : D Again Original About Come on Let's go , blue Light Wavelength Less Says That More Scattered Is And That's why The sky Blue Shows That Well Understanding Gone. Then Purple Of color Ray of light Wavelength Blue Light From Less !! Then The sky Why Purple Shows No ?? First In the atmosphere Scattered Ray of light Scattering All Wavelength Not constant for . The same With Atmosphere Earth's surface From So much More High up Located That Over there From Scattered The light To reach To reach by atmosphere 3 Purple Light A lot Exploited Become Goes. Second , human In the retina Three There are types of cone . Others Of color Than These Red , blue And Green In the light Most More Sensitivity Shows. Of these cone Different Of proportions Of sensitivity In combination We Different Different Color See I live. Us Of the eyes Cells are ' ultraviolet ' light - sensitive No. That's why Of man Near To the sky Dark Purple Says I think so Not at all.