Learn to use the 13th-century astrolabe
1,003,745 views | Tom Wujec • TEDGlobal 2009
Rather than demo another new technology, Tom Wujec reaches back to one of our earliest but most ingenious devices -- the astrolabe. With thousands of uses, from telling time to mapping the night sky, this old tech reminds us that the ancient can be as brilliant as the brand-new.
