Ultraviolet Light

Electromagnetic radiation with wavelength longer than that of x-rays but shorter than that of visible light, wavelengths range from 1x10-9m to 400x10-9m. Ultraviolet light can break some chemical bonds and cause cell damage.

Used for exposing photoresist in making semiconductor devices.


Most UV-B from the sun is absorbed by stratospheric ozone. Increased exposure to UV-B radiation suppresses the immune system and can have other adverse effects on living organisms.

See also: Extreme Ultraviolet, Fluorescence, Infra-Red Radiation, Light, Ultraviolet Catastrophe, Visible Light, X ray.

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Subjects: Optics