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Old 05-07-2006   #13 (permalink)
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Turtle
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Talking Re: Solar Parabolic Trough Charcoal Oven

Quote:
Originally Posted by Cedars
There was a website (which I cannot find now) about using aol disks to create a beam of focused light. He had great pics of things he tried to start on fire. It wasnt that big either.

Pictures included melted baby dolls. Burnt marshmallows and an attempt to pop Jiffy popcorn. Might be worth some looking into.
Interesting! I wonder if they reformed them into parabolic form? I didn't check the math yet, but with a long focal length - say 12" - not much curve is needed.
In the mean time, my oven - with a focal length of 10" - is ready to test. Unfortunately it's raining here today & corrugated paperboard & white glue do notta lika the raina!

Last edited by Turtle; 04-17-2007 at 11:45 PM..
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