A puzzle posted in an online community unlocked a wormhole within the basic shape. Credit...Ian Henderson Supported by By Siobhan Roberts Lisanne Taams, a student at Radboud University in the ...
A wooden bar (6-1/8" x 2" x 3/4") is attached to a flat wooden handle (17-7/8" x 2" x 1/8") by nine wooden pegs. By the 17th century, draftsmen used T-squares to help them draw horizontal lines. The ...
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