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Physics Girl
How do touchscreens work?
Season 2
Episode 3
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.
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8:32
Hawaii is known for its volcanoes, but most volcanoes on earth exist along tectonic plate
11:21
The TRAPPIST-1 exoplanet system has seven earth-like planets.
6:32
Why are plants green? Is there a reason plants evolved to be green, globally?
8:03
How can you time 45 minutes with 2 sticks that each burn for one hour?
9:09
How can you use an infrared camera to see through walls? To inspect the scene of a crime?
