1. Mar 23, 2008 #1

   supersteve921

   

   Im trying to figure out the best way to heat a about a bottles worth of water, my idea was to get a concave mirror and focus it onto some small radiator like a heater core. The thing is I cant find a large concave mirror, so I was thinking about using a satalite dish but I cant think of a way to make it shiny enough, you guys go any ideas?

    

   supersteve921, Mar 23, 2008
2. 
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3. Mar 25, 2008 #2

   Andy Resnick

   

   Science Advisor

   Education Advisor

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   2016 Award

   Edmund scientific sells giant Fresnel lenses just for this purpose.

    

   Andy Resnick, Mar 25, 2008

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