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

Published 163 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.

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How Microwaving Grapes Makes Plasma

Published 179 days ago in Science. Submitted by sux2bu

A bisected grape in the microwave makes plasma. But how does it work? A grape is the right size and refractive index to trap microwaves inside it. When you place two (or two halves) close together the fields interact with each other creating a maximum of electromagnetic energy wh…
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Climate Scientists Destroy Climate Change Alarmism

Published 195 days ago in Science. Submitted by thefox

Four climate scientists destroy the anthropogenic global warming myth in response to the Global Climate Action Summit.

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Piezoelectricity - why hitting crystals makes electricity

Published 227 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.

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

Published 229 days ago in Science. Submitted by drunkmonk

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