Date: Mon, 21 Oct 2002 12:25:05 -0500


Subject: light the match demo


I shared the handouts from this summers demonstration workshop with some
other physics instructors and they immediately wanted to do several demos
(two of which we already had) but we don't have the reflective mirrors to
do PIRA 4B40.10 the light the match demo. Two curved mirrors (circular?
parabolic?) one with a filament at its focus the other with a match. Turn
on the current to the filament/reflector located on one side of the demo
table and the match in the other reflector located at a distance is
ignited. I recall that this one was discussed at the workshop but do not
have any source for the reflectors. Does anyone have a source of some
appropriate reflectors?

Don Mathieson
Tulsa Community College