Aces High Bulletin Board

General Forums => The O' Club => Topic started by: AKcurly on May 22, 2004, 04:32:47 AM

Title: nice hobby - random destructive acts via a giant fresnel lens
Post by: AKcurly on May 22, 2004, 04:32:47 AM

http://www-personal.umich.edu/~bclee/lens.html

Title: nice hobby - random destructive acts via a giant fresnel lens
Post by: Leslie on May 22, 2004, 05:39:24 AM

Hiya Curly.  I've got a Freznel lens about half the size of the one shown on the web site.  It looks like a 1/8 inch thick piece of plexiglass with many concentric circular grooves cut into it.

...and I believe it came from an electronics and appliance store.  It's intended use was to place it in front of a television set to increase the screen size when viewing.

Sort of a poor man's big screen TV, so to speak.  I need to dig that thing out and see how well it works for TV viewing.

Dunno if I want to try using it the way those guys were.  Sounds like it could damage your eyes the way they described it.



Les