『Why Is the Sky Blue?』のカバーアート

Why Is the Sky Blue?

Why Is the Sky Blue?

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 The source provides an extensive scientific explanation for why the sky appears blue, focusing primarily on the phenomenon of Rayleigh scattering, which causes shorter wavelengths of light, like blue and violet, to be dispersed by atmospheric gas molecules. It explores the nature of light as a spectrum of wavelengths and details the composition of Earth’s atmosphere, highlighting how nitrogen and oxygen facilitate this scattering process. The episode also addresses related concepts, such as why the sky is blue and not violet, why sunsets appear red, and how the skies of other planets—like Mars and the Moon—differ due to variations in their atmospheric compositions. Finally, the source briefly touches upon the historical and cultural perspectives of the blue sky, along with the influence of human perception and other atmospheric phenomena.
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