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Thumbnail of Piezoelectricity - why hitting crystals makes electricity

Piezoelectricity - why hitting crystals makes electricity

Published 14 days 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.

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

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

Published 17 days ago in Science. Submitted by drunkmonk

Thumbnail of This is how electrons and high energy particles look like

This is how electrons and high energy particles look like

Published 18 days 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/

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

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

Published 28 days 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.

Thumbnail of Barycentric balls in space - classroom demonstration video

Barycentric balls in space - classroom demonstration video

Published 44 days ago in Science. Submitted by sux2bu

Do you really float in space?