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神经网络昆斯林的新闻组分类2006

Newsgroups: sci.electronics
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From: [e-mail] (Michael Covington)
Subject: Re: Building a UV flashlight
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Date: Tue, 20 Apr 1993 17:38:26 GMT
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You can get a *little* UV by putting a heavy UV filter (deep purple) in
front of an ordinary flashlight bulb (the brightest you can get).
My father used a setup like this in law enforcement work circa 1964.

Good UV ("blacklight") bulbs work like fluorescent bulbs.  I'd proceed by
getting a cheap battery-powered _fluorescent_ light, then going to an
electrical supply house and finding a UV bulb that would fit it.

-- 
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