21 Facts About Ultraviolet radiation

Consequently, the chemical and biological effects of UV are greater than simple heating effects, and many practical applications of UV Ultraviolet radiation derive from its interactions with organic molecules.

UV Ultraviolet radiation was discovered in 1801 when the German physicist Johann Wilhelm Ritter observed that invisible rays just beyond the violet end of the visible spectrum darkened silver chloride-soaked paper more quickly than violet light itself.

Ultraviolet radiation called them "oxidizing rays" to emphasize chemical reactivity and to distinguish them from "heat rays", discovered the previous year at the other end of the visible spectrum.

Ultraviolet radiation can be detected by suitable photodiodes and photocathodes, which can be tailored to be sensitive to different parts of the UV spectrum.

The fraction of UVB which remains in UV Ultraviolet radiation after passing through the atmosphere is heavily dependent on cloud cover and atmospheric conditions.

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Shorter bands of UVC, as well as even more-energetic UV Ultraviolet radiation produced by the Sun, are absorbed by oxygen and generate the ozone in the ozone layer when single oxygen atoms produced by UV photolysis of dioxygen react with more dioxygen.

Ultraviolet radiation lasers have applications in industry, medicine, chemistry, free-air secure communications, computing, and manufacture of integrated circuits.

UV Ultraviolet radiation is often used to excite a given sample where the fluorescent emission is measured with a spectrofluorometer.

In biological research, UV Ultraviolet radiation is used for quantification of nucleic acids or proteins.

In environmental chemistry, UV Ultraviolet radiation could be used to detect Contaminants of emerging concern in water samples.

Ultraviolet radiation can detect thin sheens of spilled oil on water, either by the high reflectivity of oil films at UV wavelengths, fluorescence of compounds in oil, or by absorbing of UV created by Raman scattering in water.

Ultraviolet radiation lamps are used as part of the analysis of some minerals and gems.

Ultraviolet radiation is used for very fine resolution photolithography, a procedure wherein a chemical called a photoresist is exposed to UV radiation that has passed through a mask.

UV Ultraviolet radiation is useful in preparing low-surface-energy polymers for adhesives.

Ultraviolet radiation lamps are used to sterilize workspaces and tools used in biology laboratories and medical facilities.

Disinfection using UV Ultraviolet radiation is commonly used in wastewater treatment applications and is finding an increased usage in municipal drinking water treatment.

The UV-A irUltraviolet radiation and increased water temperature kill organisms in the water.

Ultraviolet radiation is used in several food processes to kill unwanted microorganisms.

Ultraviolet radiation traps called bug zappers are used to eliminate various small flying insects.

Different designs of ultraviolet radiation traps are used by entomologists for collecting nocturnal insects during faunistic survey studies.

Ultraviolet radiation is helpful in the treatment of skin conditions such as psoriasis and vitiligo.