# COOl PHYSICS TOYS

Physics fundamentals can be fun to teach with the right tools, and our collection of cool toys do just that! Instructional guides with simple activities accompany each cool toy.

## Mechanics

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This familiar apparatus dramatizes Newton's Third Law!

For every force, there is an equal and opposite force. Use to illustrate that momentum and kinetic energy are conserved. Lift and drop one ball, and one shoots out from the opposite side; start with two balls, and two shoot out, etc. Apply all the logic and laws of physics you want to this little gadget - it's still amazing!

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# Pendulum Wave

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## Heat & Thermodynamics

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Almost everyone remembers this toy with at least a twinge of nostalgia. Now he's back, disguised as a great physics demonstration of heat and thermodynamics.

This lugubrious little lorikeet dips his beak into a glass of water as evaporative cooling induces the rise of a volatile liquid from his tail toward his head. As he dunks, the liquid returns to his tail, the bird rises, and the process begins again.

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# Galileo's Thermometer

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## Electricity & Magnetism

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Safely create and explore lightning right in your classroom. The Plasma Globe offers you a safe, fascinating way to demonstrate how lightning works as well as explain the concepts of potential differences and electron orbital jumping.

A small Tesla coil produces a large potential difference between it and the glass of the surrounding globe. When the potential difference is large enough, the gas becomes ionized and electrons jump to the glass - just like when electrons jump from the clouds to the ground. The result? Bright, harmless, violet lightning bolts that respond to touch and sound.

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# Ferrofluid

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## Light & Optics

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Explain why the sky is blue during the day but yellow at sunset!

Amaze your students with this glass egg that acts like a little piece of the sky. The egg looks blue when light passes through a small part of it. But when light passes through a large amount, it appears yellow. Just like the sky! At sunset, the sun’s light is passing horizontally through a thick layer of atmosphere and appears yellow. But during the day, the sun’s light passes nearly vertically through much less atmosphere, and so it appears blue. The reason is that short wave blue light is more frequently scattered by air molecules than longer wave red and yellow light. So during sunset the blue light is already scattered away before the light finally reaches your eye.

# Rainbow Window

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## Other Cool Tools

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A takeoff from the old Trashcan Air Cannon; this amazing new vortex launcher sends a strong blast of air all the way across the room!

It's great for:
- Showing that air is a form of matter
- Demonstrating the Bernoulli effect
- Blowing out candles from 20 feet away!
- Creating amazing vortices!
- Making 6-inch smoke rings (with a fog generator)!
- Waking daydreaming students!

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