60 Watts), we are most accustomed to describing UV light bulb power in terms of its electrical energy consumption. IMPORTANT: electrical watts does not equal UV light watts! As with regular household light bulbs (e.g. For a 200 sq ft area, simply multiply the target UV levels by 2x for an estimated 2 watts of UV light energy needed. In this case, we are measuring the amount of light energy emitted in the UV wavelengths.įor most basic applications, 1 watt of UV light energy output is sufficient to create strong fluorescence effects over a 100 sq ft area. What is a "watt" of UV light? Watts are simply units of energy, and as you may recall from your introductory physics classes, energy can exist in a variety of forms - for example, electrical, kinetic, chemical, or light energy. For UV lights, the most accurate metric is "watts" of UV light output. Although lumens is typically the metric used to measure the amount of visible light, because ultraviolet light is invisible, this metric is essentially useless. UV blacklight "brightness" is a difficult metric to describe, because UV light energy is not directly visible. It may not appear like much, but the dim light you see is just a small fraction of the actual UV light energy hitting your eyes. Do not, for example, look directly into a UV LED blacklight when it is turned on, even if it does not appear bright. The amount and intensity of UV-A light energy emitted by blacklights is generally below dangerous levels, but be aware that the UV light energy emitted by the lamps is invisible. WARNING: Always use common sense and observe safety around the use of UV lights. Below, we discuss 4 questions you should consider before purchasing a UV blacklight. Generally, this means that a blacklight will emit primarily UV-A radiation, and very little visible light. Unlike regular white light bulbs, UV blacklights are unique in that they primarily emit ultraviolet radiation as opposed to visible light, and as a result, there are some additional factors you will want to consider before making a purchase.īlacklights are most commonly used when the fluorescence of objects needs to be observed, with as little visible light as possible. Exposure from black lights would be much lower than your exposure to UVA outdoors.UV blacklights are great devices with a wide range of applications in the arts, industry, and scientific research. Exposure to UVA from black lights is well below the recognised safe limits and is not hazardous to people using them, working in their vicinity or who have them in their home. UVA is thought to cause premature ageing and has recently been linked to some skin cancers, however UVB is the main cause of skin cancer. Many insects can see ultraviolet light so black lights are often used in the “bug zapper” type of insect traps.īlack lights are usually fluorescent lamps or incandescent light bulbs modified to allow only the emission of UVA and some visible light. These particles are found in certain objects, including your teeth and fingernails.
This glow is the energy emitted by the light being converted into visible light by particles called phosphors. They are often used in industry, nightclubs or amusement parks to make things glow.
Black lights emit a type of ultraviolet radiation called UVA, which is invisible to the human eye.
#Uv black light skin#
There is no evidence to suggest that insect traps using ultraviolet black light increase your risk of developing skin cancer, as the amount of ultraviolet radiation they emit is very low. Will the use of this in my home increase my family's risk of developing skin cancer?" I recently bought an insect repellent and noticed that it uses "ultraviolet black light".
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