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Thread: Impossible object

  1. #1
    Elite Member
    Join Date
    Jan 2005
    Location
    Lexington, MA
    Posts
    5,607

    Impossible object


    Here's something to drive your friends crazy.

    Take a 3-by-5 file card and cut it on the solid lines.
    Crease it on the dotted line.
    Code:
          *---*-------*---*
          |   |       |   |
          |   |       |   |
          |   |   C   |   |
          |   |       |   |
          |   |       |   |
          |   |       |   |
          * - * - * - * - *
          |       |       |
          |       |       |
          |   A   |   B   |
          |       |       |
          |       |       |
          |       |       |
          *-------*-------*
    Hold section C with your right hand; let the sheet hang vertically.
    Hold section A with your left hand and swing it 90o toward you.
    Now hold section C with your left hand.
    Hold section B with your right hand and swing it 90o away from you.

    You will have an object that looks like this:
    Code:
                          *---*   *-------*
                         /   /   /       /
                      *-------* /       /
                      |       |/       /
                      |       |       /
                     /|       |      /
                    / |       |     /
                   /  |       |    /
                  /   * - * - *   /
                 /       /   /   /
                /       /   /   /
               /       /   /   /
              /       /   /   /
             /       /   /   /
            *-------*   *---*
    After you've marveled at how impossible it looks,
    . . give it to your best friend.
    Last edited by soroban; 05-04-2012 at 05:32 PM.

  2. #2
    Elite Member
    Join Date
    Feb 2004
    Location
    Ottawa, Ontario
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    12,352
    Quote Originally Posted by soroban View Post

    After you've marveled at how impossible it looks,
    . . give it to your best friend.
    Leaves Subhotosh out...he has no friends!
    I'm just an imagination of your figment !

  3. #3
    New Member
    Join Date
    Oct 2011
    Location
    Brooklyn, N.Y.
    Posts
    20
    my younger sister got it way too fast!!!

  4. #4
    Elite Member
    Join Date
    Jun 2007
    Posts
    12,839
    Quote Originally Posted by Denis View Post
    Leaves Subhotosh out...he has no friends!
    How rude.... I have 22 friends playing positions like "silly-mid-on", "slip" and converting "Googlies" to "leg-breaks" and you think I don't have friends!!!!
    “... mathematics is only the art of saying the same thing in different words” - B. Russell

  5. #5
    Elite Member
    Join Date
    Feb 2004
    Location
    Ottawa, Ontario
    Posts
    12,352
    Quote Originally Posted by Subhotosh Khan View Post
    How rude.... I have 22 friends playing positions like "silly-mid-on", "slip" and converting "Googlies" to "leg-breaks" and you think I don't have friends!!!!
    If it's YOUR legs they break, then they're my friends!!
    I'm just an imagination of your figment !

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