by Howard Covitz
Filmed at Ignite Phoenix
The astrolabe is an astronomical calculator dating back at least 2000 years. Once you have walked through how to use the darn thing, you will appreciate firsthand just how much ""they knew back then"".
Cam Laque, Alyssa Whitaker, Esha Kashmiri at Ignite Annapolis
Matt Harding at Ignite
Alex Wolfson at Ignite Berlin