How does solar energy reach us?

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The Sun releases energy by means of light passing through the atmosphere. Only one third of the light sent by the Sun to the Earth reaches the planet’s surface, since the atmosphere acts as a very high illuminating radiation filter. Our eyes only perceive a very small part of the light that reaches the Earth, the so-called visible light.

Light travels in the form of waves. In order to understand what a wave is, imagine some particles moving as in the figures below:

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