Piezoelectricity - why hitting crystals makes electricity

Published 4 years ago in Science. Submitted by sux2bu

Certain crystals, like quartz will produce a voltage when hit. It's all to do with the arrangement of atoms and charge in the lattice. It's used in lots of things like piezo lighters, sensors, speakers and oscillators for timekeeping.

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This is how strong is electron wind from a van de graf generator

Published 4 years ago in Science. Submitted by drunkmonk

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This is how electrons and high energy particles look like

Published 5 years ago in Science. Submitted by drunkmonk

There are ways to see high energy particles. This is the coolest looking. Here is a picture to interpret what you see. http://www.cloudylabs.fr/wp/phys/

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How Hard Can You Hit a Golf Ball? (at 100,000 FPS) - Smarter Every Day 216

Published 5 years ago in Science. Submitted by fjwjr

We used a pressurized vacuum cannon to get the golf ball up to speeds of over 500 miles per hour.

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Barycentric balls in space - classroom demonstration video

Published 5 years ago in Science. Submitted by sux2bu

Do you really float in space?

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