Physics

Digital Sand is a Mesmerizing Display of Physics and LEDs

These DIY physics toys allow you to play with digital LED sand. They’re fun and easy to make, and mesmerizing to watch.

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Physics Girl Builds an Acoustic Levitator

Explore the floaty properties of sound with acoustic levitation.

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Weekend Watch: High Schoolers Teach Science at A3Academy

Young people teaching science as they learn it themselves.

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The Fascinating Physics of a Floating Screwdriver

Float a screwdriver in mid-air. And then discover how and why this cool trick works.

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Working Lego Particle Accelerator

Playtime just got a lot more physical and experimental with this Lego “Large Brick Collider.”

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Why It’s So Hard to Land a Rocket on Its Tail

On Monday history was made. For the first time ever a rocket stage that delivered a payload to orbit turned around and returned, landing safely on its tail.

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