The sun's rays reach Earth every day throughout the year. Among the components of the solar radiation the following types of radiation can be identified : infrared, visible and ultraviolet (UVA, UVB, UVC). The first type of radiation (infrared) is responsible for the sensation of heat and is responsible, among others, for the occurrence of sunstroke. Visible radiation allows you to see colors during the day, and after dark lets you see in shades of gray.

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