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 What does a ringworm look like under a black light?

Answer A ringworm may fluoresce a bright green color under a black light. However, about 50 percent of ringworm species do not glow at all under black lights, making this method of ringworm detection not ... Read More »
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Top Q&A For: What does a ringworm look like under a black light

What is the cause of a ringworm type rash if not ringworm?

A ringworm (tinea) rash is usually red, bumpy, scaly and occurs in patches that may or may not be circular. If the rash is not ringworm (caused by fungus), then many other conditions could be the ... Read More »
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Is a black light a fluorescent light?

Some black lights are made in the same manner as fluorescent lights, except that dark purple glass is used instead of clear glass and only one phosphor is used. The purple glass blocks nearly all v... Read More »
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What is a black light?

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 ... Read More »
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Is a black light the same as a UV light?

A black light emits a type of UV light, but they are not interchangeable terms. Black lights produce UVA (long wave) light, along with a small amount of visible light. Black lights do not produce ... Read More »
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