HD and the Void

Ep. 7 Measuring Mechanisms

HD
Learn about four ancient (and contemporary, if you work on a ship) devices that utilize very specific areas of astronomy to help you figure out where you are and what time it is, and also predict where celestial bodies will be on other dates and at other times. I talk about the armillary sphere, the astrolabe, the sextant, and the Antikythera Mechanism.