Date: Wed Nov 21 14:42:47 2007

Author: Wayne Easterling

Subject: Re: Happy Thanksgiving

Tappers.... "Happy Thanksgiving" to all!!

-----Original Message-----
From: [] On
Behalf Of Richard Heckathorn
Sent: Wednesday, November 21, 2007 8:39 AM
Subject: [tap-l] Happy Thanksgiving


May I wish each of you a Happy Thanksgiving?

I personally have much to be thankful for.

One is the opportunity to interact with you as we
strive to better teach our students.


Helping teachers who facilitate, motivating
students who learn.
Dick Heckathorn 14665 Pawnee Trail Middleburg
Hts, OH 44130 440-826-0834
Adjunct Physics Teacher - Baldwin Wallace College
Physics is learning how to communicate with ones
environment so that it will talk back.

-----Original Message-----
[] On Behalf Of
William Beaty
Sent: Monday, November 12, 2007 6:21 PM
Subject: Re: [tap-l] Sony IR camera modification

On Sun, 11 Nov 2007, Bernard Cleyet wrote:

> p.s. such filters may be expensive. A poor but
very inexpensive one is
> processed unexposed kodachrome.

Another one is "congo blue" stage light filters.
Use two layers to make
them opaque to humans (or add a primary red filter
to cut the blue band.)
These are designed to be IR-pass, so kilowatt
incandescent lamps don't set
fire to the filters. For lots of info see:

Build "Infrared goggles" for $10

Passive-IR goggles gallery

(((((((((((((((((( ( ( ( ( (O) ) ) ) )
William J. Beaty
billb at amasci com
EE/programmer/sci-exhibits amateur science,
hobby projects, sci fair
Seattle, WA 425-222-5066 unusual phenomena,
tesla coils, weird sci