Sunlight or Sunbeam is a set of electromagnetic waves, which have a thermal energy that varies according to the wavelength of the wave forming the beam. Energy is inversely proportional to wavelength. It is known that humans only see the visible portion of sunlight, The beam is not seen by the naked eye. The visible light has a spectrum of colors, red, yellow, green, violet, blue, etc., which forms rainbow colors, as sunlight reaches the Earth by penetrating the solar radiation atmosphere, which in turn absorbs part of the Ray energy, as well as atmospheric gases such as carbon dioxide and nitrogen gas, as well as oxygen gas, which also absorb part of the sunlight each according to its capacity, thus preventing the arrival of a large part of the radiation, and the rest reaches the surface of the Earth at an appropriate temperature .
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