The simple doorbell is a wonderful piece of technology built around a device called a solenoid. Make your own!
Countries: CA
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Why Do Balls Bounce?
Learn about the difference between elastic and inelastic collisions. It’s all about conserving kinetic energy!
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Rosin Up The Bow
Violins and cellos make beautiful music when a skilled musician runs a bow across the strings. But why do they apply rosin to the strings before playing? It’s all about vibration!
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Spinning Tops
Explore the strange physics that keep spinning tops from falling down. What is it about spinning that makes objects stable, and seemingly able to defy gravity?
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Body Heat
Our body creates heat through the chemical reactions required to move muscles. With the help of some candy, we can illustrate just how much heat is available when we break apart sugar molecules!
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How to Disappear
Make a test tube disappear before your eyes, and learn about the index of refraction.
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The Original Battery
Alessandro Volta created the first battery. His ‘voltaic pile’ used alternating silver and zinc discs separated by cloth soaked in salt water. We can easily reproduce this landmark invention and create a small current!
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Play With Polymers
A polymer is a long chain molecule composed of smaller, similar units bonded together, like the boxcars in a train. These demonstrations illustrate some of their remarkable properties!
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Water Bottle Rocket
Why do rockets propelled by air pressure work better with water inside, and how much water works best?
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Make a Comet
It’s simple and fun to make your own dirty snowball and, in the process, learn what comet are composed of and how they move through space!