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black light
(redirected from Blacklight)

    Also found in: Dictionary/thesaurus, Medical, Wikipedia 0.01 sec.
black light: see ultraviolet radiation ultraviolet radiation, invisible electromagnetic radiation between visible violet light and X rays; it ranges in wavelength from about 400 to 4 nanometers and in frequency from about 1015 to 1017 hertz.
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black light [′blak ‚līt]
(optics)
Invisible light, such as ultraviolet rays which fall on fluorescent materials and cause them to emit visible light.
black light
Invisible ultraviolet electromagnetic energy near the visible spectrum; useful for exciting fluorescent paints, dyes, etc., so that they become visible.
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