Jelaskan Pautan luar dari Astrolab dalam bahasa melayu

penjana astrolab kertas, daripada ESO

"Hello World!" for the Astrolabe: The First Computer  Video of Howard Covitz's Presentation at Ignite Phoenix, June 2009. Slides for Presentation Licensed as Creative Commons by-nc-nd.

Video of Tom Wujec demonstrating an astrolabe. Taken at TEDGlobal 2009. Includes clickable transcript. Licensed as Creative Commons by-nc-nd.