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  1. Thread: cardboard jet

    by GLSmyth
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    At http://glsmyth.com/pinhole/ you will find a...

    At http://glsmyth.com/pinhole/ you will find a section with a couple of links to articles about zone plates. The easiest route is to go to The Zone Plate by Chris Patton and print out the zone plate...
  2. Thread: cardboard jet

    by GLSmyth
    Replies
    6
    Views
    1,827

    This looks like it could be Kodak Infrared - love...

    This looks like it could be Kodak Infrared - love the glow.

    Cheers -

    george
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