Although very distant from our planet (~ 150 million km on average), the Sun provides us with light energy and heat, both necessary to sustain life on Earth.

light-emitting diode

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Fortunately the atmosphere is acting as a protector shield against dangerous gamma rays, X-rays and the major part of UV because all of them are particularly harmful.

This energy arrives in the form of electromagnetic radiation, which is wave-like in nature and therefore is characterized by a wavelength related to the composition and temperature of the transmitter, in this case, the Sun.

LEDlight

The electromagnetic spectrum describes the distribution of the different types of radiation over a wide wavelength spectrum.

In descending order of wavelength, the spectral range extends from radio waves (long wavelengths) up to tiny gamma rays (small wavelengths), with the infrared (IR), visible and ultraviolet (UV) ranges in between, where the Sun emits the most of its radiation.