On Tue, 09 May 2000 16:25:15 +0200, Sigmund Kyrre Aas
<as### [at] studntnuno> wrote:

>Actually it's 120 times per second.. Ok I'll go away :)

Actually, a common houshold lamp can't flash that quickly. The
filament won't cool off enough between the rapid pulses of current. So
this isn't purely a simple case of Persistence Of Vision, it's also
partially a case of "Persistence of Illumination" as well.

Later,
Glen Berry

( Remove the "7" from 7no### [at] ezwvcom to email me. )

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