Glass - A New Wonder Material
Clip: Episode 1 | 4m 9sVideo has Closed Captions
Learn how clear glass was born - and gave us spectacles almost 800 years ago.
Learn how clear glass was born - and gave us spectacles almost 800 years ago.
Problems playing video? | Closed Captioning Feedback
Problems playing video? | Closed Captioning Feedback
Glass - A New Wonder Material
Clip: Episode 1 | 4m 9sVideo has Closed Captions
Learn how clear glass was born - and gave us spectacles almost 800 years ago.
Problems playing video? | Closed Captioning Feedback
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Clip: Ep1 | 5m 28s | In 1923, Edwin Hubble began the manual process of photographing the Andromeda Nebula. (5m 28s)
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Clip: Ep1 | 4m 44s | How a New York property boom led to the discovery of the distance to the stars. (4m 44s)
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