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What is a Black Light?

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What is a Black Light?

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The term “black light” refers to light bulbs and fluorescent lamps that produce ultraviolet light. Although black generally marks the absence of light, it is the black coating of black lights that enables ultraviolet light to be seen.Ultraviolet LightThe term “ultraviolet” was coined in reference to that light’s placement on the light spectrum. The color violet has the highest frequency within the visible part of the spectrum. Ultraviolet is the next frequency range beyond violet.Black Light Fluorescent LampThe typical black light is made of a fluorescent lamp containing an inert gas and some mercury. Ultraviolet light is produced by passing electricity through the lamp and energizing the mercury.Making Ultraviolet Light VisibleThe outer shells of black light bulbs and lamps bear a phosphor coating that converts the light energy produced by the mercury filament into visible light.PhosphorsPhosphors are substances that produce light when exposed to radiation. Substances usually just ref

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