Consequently, the chemical and biological effects of UV are greater than simple heating effects, and many practical applications of UV radiation derive from its interactions with organic molecules.
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15 Facts About UV radiation
2.
UV 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.
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3.
UV 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.
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4.
The fraction of UVB which remains in UV radiation after passing through the atmosphere is heavily dependent on cloud cover and atmospheric conditions.
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5.
Shorter bands of UVC, as well as even more-energetic UV 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.
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Sun6.
UV radiation is often used to excite a given sample where the fluorescent emission is measured with a spectrofluorometer.
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7.
In biological research, UV radiation is used for quantification of nucleic acids or proteins.
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8.
In environmental chemistry, UV radiation could be used to detect Contaminants of emerging concern in water samples.
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9.
Ultraviolet UV 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.
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10.
UV radiation is useful in preparing low-surface-energy polymers for adhesives.
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11.
Disinfection using UV radiation is commonly used in wastewater treatment applications and is finding an increased usage in municipal drinking water treatment.
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12.
The UV-A irUV radiation and increased water temperature kill organisms in the water.
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13.
Ultraviolet UV radiation is used in several food processes to kill unwanted microorganisms.
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14.
Different designs of ultraviolet UV radiation traps are used by entomologists for collecting nocturnal insects during faunistic survey studies.
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15.
Ultraviolet UV radiation is helpful in the treatment of skin conditions such as psoriasis and vitiligo.
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