Free 186 More Best Homemade Tools eBook:  
Get 2,000+ tool plans, full site access, and more.

User Tag List

Results 1 to 1 of 1

Thread: Grid stereographic projection - photo

  1. #1
    Content Editor
    Supporting Member
    Altair's Avatar
    Join Date
    Aug 2013
    Posts
    11,722
    Thanks
    1,353
    Thanked 29,236 Times in 9,716 Posts

    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

    186 More Best Homemade Tools eBook
    Last edited by Jon; Sep 4, 2020 at 10:56 PM.

  2. The Following 4 Users Say Thank You to Altair For This Useful Post:

    baja (Sep 6, 2020), jimfols (Sep 5, 2020), KustomsbyKent (Sep 5, 2020), neilbourjaily (Sep 5, 2020)

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •