[opendtv] Re: Europe now debates i vs p
- From: Craig Birkmaier <craig@xxxxxxxxx>
- To: opendtv@xxxxxxxxxxxxx
- Date: Mon, 13 Sep 2004 07:55:16 -0400
At 8:58 AM +0200 9/13/04, jeroen.stessen@xxxxxxxxxxx wrote:
>I'd say that Doug is right. I remember long time ago a hobby
>project (in a magazine) where a lamp was used to carry speech
>over a distance, by modulating the filament current. While it
>may take a long time for a filament to cool off completely,
>initially the cooling goes very fast. It has to do with the
>radiated power being proportional to the FOURTH power of the
>temperature. Thin white hot metal will cool very quickly !
YUP.
We are talking about the ability to perceive the modulation in
intensity of the "flickering" light source.
Regards
Craig
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