Date: Mon, 23 May 2005 10:33:56 +1200

Author: Alistair Lightfoot

Subject: RE: Large Parabolic Mirrors



Both places I have taught physics in here in NZ have had one excellent
parabolic glass mirror over one metre across. They both were made in
England and came from World War II searchlights as used in the Pacific.
Would some army surplus place have suitable mirrors in the USA?


-----Original Message-----
[] On Behalf Of Gerald Zani
Sent: Saturday, 21 May 2005 3:07 a.m.
Subject: Large Parabolic Mirrors


We are looking to purchase a pair of large (2 feet or larger) Parabolic
mirrors for demonstrations.

Q: What do you recommend?

We want to demonstrate the real image formation and also the 4B40.10,
"Light the Match" demo.

I found them at Pasco and Arbor but they may not be parabolic:

Does anyone have these mirrors?

Do you know of another supplier for reasonably priced, very large
mirrors that do not have the cost (or quality) of a premium telescope

Due for another rainy weekend here.
-- JZ

Gerald Zani e-mail:
Manager of Demonstrations phone: (401) 863-3964
Department of Physics FAX: (401) 863-2024
Brown University Providence, RI 02912-1843 USA

Do a little more of that work which you have confessed to be good, Which
you feel that society and your most Just Judge rightly demand of you.
Cultivate the tree which you have found to bear fruit in your soil. If
you have any experiments you would like to try, try them. Now's your

Henry David Thoreau, Journal entry, 1850.

From Mon May 23 09:33:56 2005