funny phosphorus illumination after power to tv has been turned off

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Article #21946

#21946

From: Alan Waterman
Date: Tue, 02 Jan 1990 06:04

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When I turn my TV off, areas around the center of the screen dance around
brightly in multicolored flames. It is quite pretty but I can't seem to
explain it. Unplugging the set has no effect. It still continues for
about 10 minutes before dying out. Now this is an active flaming that
changes shape and color quite rapidly. Note: this is not the effect you get
when turning the set off in a dark room where you can see the whole screen]
lit up faintly.

The only thing that is possible is that the phosphorus is being bombarded
by electrons, but how can this be if the power is turned off? Is the CRT
drawing on capacitors or something?

So what do people think?

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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!iuvax!purdue!decwrl!shelby!lindy!ucscb.UCSC.EDU!sorka
From: sorka@ucscb.UCSC.EDU (Alan Waterman)
Newsgroups: sci.electronics
Subject: funny phosphorus illumination after power to tv has been turned off
Message-ID: <6805@lindy.Stanford.EDU>
Date: 2 Jan 90 06:04:02 GMT
Sender: news@lindy.Stanford.EDU (News Service)
Reply-To: sorka@ucscb.UCSC.EDU (Alan Waterman)
Organization: UCSC Undergrads
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