black light


Also found in: Dictionary, Thesaurus, Medical, Wikipedia.

black light:

see ultraviolet radiationultraviolet 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.
..... Click the link for more information.
.

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.
References in periodicals archive ?
Classics by legendary auteurs, avant-garde works by film artists, genres, and genre mixes of many types, they all can be found in Black Light, because there is no one conception of black cinema, or one conception of black people," he added.
"Black light theatre actually relies on one simple optical illusion called aACAyblack box trick', as the performers who are dressed in black cannot be seen against a black background," he added.
"Organising the Black Light Show as part of DSF activities constitutes the biggest event organised by them as yet.
If the black light test works, it represents a real advance in observing how shot moves though the air at normal game contact ranges.
Black light connotes a certain psychedelic or nightclub vibe.
Angela Davis and Huey Newton posters stand guard on the walls in an off-campus apartment dimmed by black light. Incense burn and the silky crooning of the Stylistics set the mood.
Except for traditional state-approved ballet and folk dance, as well as a stagnant form of the 1950s dance/puppetry craze known as Black Light Theatre, Czech arts took a severe battering under 50 years of Communist rule.
This means that when the wings absorb a special type of light, called ultraviolet light (or "black light"), they give off a bright blue-green glow.
Flowers such as four-o'clocks and portulacas invented the fluorescent look long before the psychedelic 1960s with its black light posters, new research shows.
Yes, it's a very familiar problem, but doing the asking this time is Huddersfield-based Black Light Productions, one of the UK's fastest growing youth theatre production companies.
"If you put that stuff under a black light it shows like it's radioactive.
The company has introduced black light curable doming compounds that are specifically designed to cure under black light to hard crystal clear polymers.