Black light operates at a different wavelength than visible light and can make certain items fluorescent when a Black light is held over them.
It contains UV spectrum light, which is not visible.
A black light still emits UV, but essentially UVA.
Is UV blacklight dangerous?
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.
Why is a black light called a black light?
Why Is a Black Light Called a “Black” Light? Although black lights emit light, ultraviolet light is not visible to human eyes, so the light is “black” as far as your eyes are concerned. A light that only gives off ultraviolet light would leave a room in apparent total darkness.
Can a UV flashlight hurt your eyes?
Exposure to light from transilluminators, UV germicidal lamps and crosslinkers can cause severe eye damage and skin burns from very short exposures. However, for persons who have had the lens of the eye removed (e.g. because of cataracts), the same exposure can cause permanent retinal damage, resulting in blindness.
Can you leave a black light on all night?
Can I keep a black light bulb on all night? (Never leave an incandescent black light unattended—in fact, avoid having them, buy an LED or fluorescent UV bulb instead, they’re much safer, more efficient, and will last much longer.)
Photo in the article by “Flickr”