Black light is pertaining to a fluorescent light designed to emit invisible ultraviolet (UV) light.
Ref: 120673/2006-09-23
Black light is pertaining to a fluorescent light designed to emit invisible ultraviolet (UV) light.
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(#)The daily puzzle:
What does '*****' mean in the following text?
"A ***** refers to the broadest category available in NAICS (or any other classification system) to describe business activities. NAICS provides 20 separate sector categories."
The answer and more