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Making A Concave Mirrior?

  1. Mar 23, 2008 #1
    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?
  2. jcsd
  3. Mar 25, 2008 #2

    Andy Resnick

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    Edmund scientific sells giant Fresnel lenses just for this purpose.
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