It's Okay to Be Smart: Why the Heck Is Glass Transparent?

5 minutes 42 seconds

Now Playing As: Captioned (English) (change)

Glass is made of sand, which is a kind of rock. But glass is transparent, and rocks aren’t. So, why is glass clear? Part of the "It's Okay to Be Smart" series.

Media Details

Runtime: 5 minutes 42 seconds

Topic: Science
Subtopic: Chemistry, Earth Sciences, Science Experiments
Grade/Interest Level: 10 - 12
Release Year: 2020
Producer/Distributor: PBS Digital Studios
Series: It's Okay to Be Smart

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Different math equations and graphs are drawn, with a butterfly as the backdrop.

Sixteen eyeballs, each with different eye color. Caption: Martin-Schultz scale.