A black light, also referred to as a UV light, ultraviolet light is a lamp that emits ultraviolet radiation (UV) in the long-wave (near ultraviolet, UVA) range, and little visible light. Other types of ultraviolet lamp emit large amounts of visible light along with the ultraviolet; however, a "black light" usually refers to a lamp that has a dark blue optical filtering material in the glass envelope of the bulb (or the lamp housing) which blocks most of the visible light, so the lamp emits mostly ultraviolet. Ultraviolet radiation is invisible, but a small fraction of visible light passes through the filtering material, with wavelengths no longer than 400-410 nm, and as a result, when operating the lamp emits a dim purple or violet glow.
Black light sources may be made from specially designed fluorescent lamps, mercury vapor lamps, light-emitting diodes (LED), or incandescent lamps. In most black lights the blue optical filter material to block visible light is in the glass envelope of the light bulb, but in some types there is a separate filter glass in the lamp housing.
Ultraviolet lights have many uses, but black lights are essential when UV 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, for diagnostic and therapeutic uses in medicine, for the detection of substances tagged with fluorescent dyes, rock-hunting, for the curing of plastic resins and for attracting insects. Black light lamps are also used for the detection of counterfeit money. Most artificial ultraviolet sources are low power. Powerful ultraviolet sources present a hazard to eyes and skin; apparatus using these sources requires personal protective equipment.
Exposure to UV in the middlewave 295-320 NM range (UVB) results in the synthesis of vitamin D3 in the skin. While excessive exposure to the shorter UVA wavelengths can be dangerous, causing blindness, skin damage, immune dysfunction, and even death, moderate exposure is beneficial. Source: Wikipedia
Germicidal UV Lights give off a powerful white UV light used for killing germs, disifecting surfaces and cleansing the air. These lights are dangerous and should be used with extreme caution! Many air purifiers use a germicidal bulbs inside the units and they need to be changed periodically.
Black Light Blue 6" 12" 14" 18" 24" 28" 36" 48"Fluorescent tubes:
White - Germacidal 6" 9" 12" 18" 24" 36"Fluorescent Spirals:
13 watt CFL - 60 Watt Equivalent, 23 watt CFL - 100 watt EquivalentIncandescent Black Light Bulbs:
A shape (household bulb), Refector R25, T-10 Tubular BulbLED Black Light Bulbs:
LED Shadow Black Light Panel, Black Light Strobes, Black Light Flashlights, Black Light Submersible Pucks, LED Par 16, Par 20, Par 38, Poster Black Lights Clip On.Black Light Ink:
Invisible InkFixtures Plug-in:
12" 18" 24" 36" 48"Fixtures Battery:
6" 12" 18" & Strobe