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Ultraviolet - Wikipedia


Ultraviolet (UV) is an electromagnetic radiation with a wavelength from 10 nm (30 PHz) to 400 nm (750 THz), shorter than that of visible light but longer than ...

What is ultraviolet (UV) radiation? - American Cancer Society


Mar 20, 2015 ... Exposure to ultraviolet (UV) radiation is a major risk factor for most skin cancers. Sunlight is the main source of UV rays. Tanning lamps and ...

Ultraviolet Radiation: How It Affects Life on Earth : Feature Articles


Stratospheric ozone depletion due to human activities has resulted in an increase of ultraviolet radiation on the Earth's surface. The article describes some  ...

Ultraviolet Waves - Mission:Science


The Sun is a source of the full spectrum of ultraviolet radiation, which is commonly subdivided into UV-A, UV-B, and UV-C. These are the classifications most ...

Student's Guide - Ultraviolet Radiation


Simply put, ultraviolet radiation (also known as UV radiation or ultraviolet rays) is ... Other types of electromagnetic radiation are gamma rays, X-rays, visible light, ...

Ultraviolet Radiation - Health Physics Society


Ultraviolet (UV) radiation is defined as that portion of the electromagnetic spectrum between x rays and visible light, i.e., between 40 and 400 nm (30–3 eV) .

Ultraviolet radiation - World Health Organization


Ultraviolet (UV) radiation is part of the electromagnetic spectrum emitted by the sun. Whereas UVC rays (wavelengths of 100-280 nm) are absorbed by the ...

Ultraviolet Radiation : OSH Answers


Ultraviolet (UV) radiation is similar to visible light in all physical aspects, except that it does not enable us to see things. The light that enables us to see things is ...

WHO | Health effects of UV radiation


Small amounts of UV are beneficial for people and essential in the production of vitamin D. UV radiation is also used to treat several diseases, including rickets, ...