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Home : Physical Science : Experiments
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| Celt Spoon |
| When an oblong, boat-shaped object--known as a celt, rattleback or wobblestone--is rotated about its vertical axis in a particular direction, it will stop rotating, begin oscillating, and then spin in the opposite direction. Here's how to construct your own mysterious celt from an ordinary spoon. |
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| Build Your Own Simple DC Motor |
| Motors are the fundamental driving force of the modern world. It is a very rare occasion when you do not see or use the action of a motor during your daily life. So how do they work? With this activity, you will build your own simple DC motor. |
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| A Simple Block and Tackle Pulley Demonstration |
| How much easier is it to lift a heavy object using a pulley system? Use this simple broomstick pulley system to effectively demonstrate why a block and tackle pulley system is so useful. |
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| The Spinning Can |
| Use Lenz´s Law to "magically" spin an aluminum can without touching the can. |
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| Color and Light |
| Why is a red apple red? Does a green filter change white light into green light? This demonstration uses a holographic diffraction grating and an overhead projector to produce a very large, very sharp rainbow of color. |
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