
The Unexpected Hero of Light
Initial Conditions: A Physics History Podcast
The Allegheny Observatory and Light
The Allegheny Observatory in Pittsburgh was the subject of this episode. It's perched on top of a hill and has three massive, protruding domes that house telescopes. Newton thought light was made up of little particles that shot straight from a light source into your eyeballs. But other Islamic scholars had believed that light traveled at a finite speed.
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