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Episode 3, Season 2<br> How do touchscreens work?

Season 2 Episode 3

About the Episode

How does a touchscreen work? Why can you text with your finger, but not with a q-tip? The physics of smartphones is a complicated and amazing mixture of engineering, physics, electronics and computer science.

Aired: 10/05/16 | Expires: | Runtime: 6m 03s