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Melanin is a substance produced by the skin that protects the skin from ultraviolet radiation. It also gives skin its color.
Ultraviolet rays can be used as for fluorescent lamps as certain chemicals glow when they absorb ultraviolet. In fluorescent lamps, the sindide of the tube is coated with a white powder that gives off light when it absorbs ultraviolet. The ultraviolet is produced by passing a current through a gas in the tube.
Ozone
The ozone (O3) is a poisonous oxygen molecule produced as natural reaction of the sun's ultraviolet radiation.
Fluorescence is produced when an electron excited by an e.m. radiation returns to the ground state and emit a photon.
Sun burn is a burn to living tissue such as skin produced by overexposure to ultraviolet, radiation, commonly from the sun's rays.
Vitamin D or cholecalciferol is the Vitamin, which is produced in the presence of ultraviolet rays in the skin.
Well there's many ways. One is from the sun's electromagnetic waves that have infrared radiation, white light (which is all colors of the rainbow), and ultraviolet radiation in case you wanted to know more about them.
Luciferase
how secondary radiation is produced?
That will depend a lot on the star's temperature. The highest frequencies can be infrared radiation, red light, blue light, ultraviolet, or even x-rays - all depending on the star's surface temperature.
This is a fluorescent label used in fluorescent miscroscopes. It is a protein that is produced by the bioluminescent jellyfish Aequorea victoria; used to trace the synthesis, location, and movement of proteins of interest in cell biology research. It is used to label live cells; passively difuses across plasma mebrane. It is called Aequorin; it is a Luciferin.Green fluorescent protein (GFP) glows in ultraviolet light.