0Dr.Bill 11 years ago Try an old projection TV. They had fresnel lenses 3' wide and can burn holes in the road 2" in diameter ! Ahhhhhhhhh ! I LIKE FIRE ! Ahhhhhhh !
0robotguy4 11 years ago Old overhead projectors (like the one shown here) usually have a small one in the base of the assembly with the lamp...
0ShutterBugger 11 years ago Look for a discarded projection TV. There is a large fresnel lens in the viewing screen. They make great solar concentrators. ~Bob~
0lemonie 11 years ago I found an A4 fresnel lens in a stationary / office supplies shop. This sort of thingL
Comments
11 years ago
Try an old projection TV. They had fresnel lenses 3' wide and can burn holes in the road 2" in diameter ! Ahhhhhhhhh ! I LIKE FIRE ! Ahhhhhhh !
11 years ago
Old overhead projectors (like the one shown here) usually have a small one in the base of the assembly with the lamp...
11 years ago
Look for a discarded projection TV. There is a large fresnel lens in the viewing screen. They make great solar concentrators. ~Bob~
11 years ago
I found an A4 fresnel lens in a stationary / office supplies shop.
This sort of thing
L