UVLED Flashlight 2 in 1 UV Black Lights. This 2-in-1 flashlight can be used as a UV blacklight and a regular flashlight, giving you limitless applications. It is perfect for detecting stains that are not visible to the human eye, allowing you to better clean a room, track an animal, or check for pet stains. Blacklight is a type of UV light that emits ultraviolet radiation. This radiation has a shorter wavelength than violet light, which is the shortest wavelength of Blacklight is ultraviolet light or a lamp that emits most of its light in the ultraviolet part of the spectrum. Black light is beyond the range of human vision, so a Thoughmost black light bulbs emit a soft blue or purple glow, the actual black light UV radiation is invisible to the naked eye. However, this does not mean that we cannot see the result of it. For example, when a black light is turned on, its glow is a reflection of the energy being emitted, which is often turned into visible light via Thereare different grades of UV, with UV-A being a black light to UV-C being germicidal death rays. Most LEDs sold as UV, especially cheap ones, are actually closer to purple/blue than UV-A. A true black light will be about 380nm, enough to fluoresce things but not create much visible light. This wavelength is not harmful unless you shine it 20Watt CFL Spiral Black Light Bulb (BLB) UV Black Light Party Bulb (3-Pack) Compare $ 29. 04 ($ 5.81 /bulb) (4) Sunlite. A Blacklight Blue lamp is essentially the same as a standard Blacklight but the glass is designed to filter out visible light. Used by psychedelic shops for lighting fluorescent posters, displays, etc. Ared heat lamp, in addition to the heat it emits, casts a warm glow on the object on which the light falls. As a result, red heat lamps are used most commonly in food service to make the food appear more warm and appealing. Other than the glow, red heat lamps have the same properties as clear heat lamps. Video of the Day. Fluorescentblack light tubes are typically made in the same fashion as normal fluorescent tubes except that a phosphor that emits UVA light instead of visible white light is used. The type most commonly used for black lights, designated blacklight blue or "BLB" by the industry, has a dark blue filter coating on the tube, which filters out most GZgho1l.