Crossword clues for blacklight
Wiktionary
n. A lamp used for decoration that gives off ultraviolet light.
Wikipedia
A blacklight (or often black light), also referred to as a UV-A light, Wood's lamp, or simply ultraviolet light, is a lamp that emits long-wave ( UV-A) ultraviolet light and not much visible light.
One type of lamp has a violet filter material, either on the bulb or in a separate glass filter in the lamp housing, which blocks most visible light and allows through UV, so the lamp has a dim violet glow when operating. Blacklight lamps which have this filter have a lighting industry designation that includes the letters "BLB". This stands for "blacklight blue", which is a contradiction in that they are the type that does not look blue.
A second type of lamp, which is also called a blacklight, produces ultraviolet but does not have the filter material, so it produces more visible light and has a blue color when operating. These tubes are made for use in " bug zapper" insect traps, and are identified by the industry designation "BL". There are also LEDs of a similar color made for use in novelties like Halloween string lights and strobes, and as a flashlight on the caps of felt-tip markers that write in UV-reactive "secret" ink.
Blacklight sources may be specially designed fluorescent lamps, mercury vapor lamps, light-emitting diodes, lasers, or incandescent lamps; although incandescents produce almost no blacklight (except slightly more for halogen types), and so are not considered true blacklight sources. In medicine, forensics, and some other scientific fields, such a light source is referred to as a Wood's lamp, named after Robert Williams Wood.
Although many other types of lamp emit ultraviolet light with visible light, black lights are essential when UV-A light without visible light is needed, particularly in observing fluorescence, the colored glow that many substances emit when exposed to UV. Black lights are employed for decorative and artistic lighting effects, diagnostic and therapeutic uses in medicine, the detection of substances tagged with fluorescent dyes, rock-hunting, the detection of counterfeit money, the curing of plastic resins, and attracting insects. Strong sources of long-wave ultraviolet light are used in tanning beds. Although the low-power UV-A emitted by black lights is not a hazard to skin or eyes and can be viewed without protection, powerful ultraviolet sources present dangers and require personal protective equipment such as goggles and gloves.
Blacklight is the name of two fictional characters associated with the vigilante Shadowhawk from Image Comics.
Blacklight (Kandra Freeman), is a fictional character appearing in American comic books published by Marvel Comics. The character appeared in the MC2 series A-Next. She is the daughter of Derek Freeman and Monica Rambeau aka Photon.
Blacklight is the fourth studio album by Iris, released on September 3, 2010.
Blacklight is the third studio album by Christian rap artist, Tedashii on Reach Records. It was released on iTunes on May 24, 2011, and in stores on May 31, 2011. The album produced singles "Need It Daily" (which later became a music video) and "Riot". The song "Last Goodbye" was made into a music video which was released on May 30, the day after Memorial Day.
Blacklight is an open source Ruby on Rails Engine for creating search interfaces on top of Apache Solr indices. The software is frequently used by libraries to create discovery layers or institutional repositories; museums and archives to highlight digital collections; and by other information retrieval projects.
Usage examples of "blacklight".
Once they were almost surprised by a police patrol car, equipped with blacklight and almost invisible, but the Fader sensed it in time and they crouched behind a low wall which separated the adjacent field from the road.
We were on Calle 44, near La Perfidiosa, the blacklight inferno dancehall where I hung when I was fourteen, looking for tourists to rob.
Even now the onlookers were being amused by blacklight close-ups of the couples on the dance floor.
I had also been careful to come anonymously to the city, traveling in a rented vehicle across the Crater Plain at night, hiring a room in a slum tenement and staying away from any haunt-locks and blacklight devices that might scan my soul engrams and reveal me for what I was: Hestia Memar, a woman of Winterstrike, an enemy.
The blacklight matrix sizzled off with a fierce electric odor, like the air after a thunderstorm.
Rowan College in NJ recently completed a NASA study of the Blacklight Power process as a propulsion system for small satellites with a very favorable report.
Doc blinked signals with an infraray beam that could be seen only with blacklight glasses, which each of his aids habitually carried.
The scanner glows with blacklight, an eldritch sparkle, as the lock reads her soul-engrams through the hollow of her eye.