From Wikipedia, the free encyclopedia
18th Century Persian astrolabe
18th Century Persian astrolabe
Photo credit: Solipsist
An 18th-century Persian astrolabe. Astrolabes are complicated inclinometers that used the position of the stars and planets to determine longitude and latitude; they were in use for this purpose from Roman antiquity through the Renaissance.
From Wikipedia, the free encyclopedia
18th Century Persian astrolabe
18th Century Persian astrolabe
Photo credit: Solipsist
An 18th-century Persian astrolabe. Astrolabes are complicated inclinometers that used the position of the stars and planets to determine longitude and latitude; they were in use for this purpose from Roman antiquity through the Renaissance.

Videos

Youtube | Vimeo | Bing

Websites

Google | Yahoo | Bing

Encyclopedia

Google | Yahoo | Bing

Facebook