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Thread: Grid stereographic projection - photo

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    Supporting Member Altair's Avatar
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    Grid stereographic projection - photo

    Grid stereographic projection by mathematician Henry Segerman.

    "A light placed at the top of a 3D printed sphere casts a surprising square grid shadow. This illustrates 'stereographic projection'¯, which is the map from the sphere to the plane you get by drawing lines from the north pole of the sphere and sending the point the line hits on the sphere to the point the line hits on the plane."




    More:

    https://artthescience.com/blog/2016/...enry-segerman/


    Previously:

    Drawing three right angles on a sphere - GIF
    3D-printed right-only pointing arrow illusion - GIF
    basic woodworking "impossible" optical illusions
    Michael Jackson's anti-gravity illusion shoes - GIF and patent

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    Last edited by Jon; Sep 4, 2020 at 11:56 PM.

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