The magic chain

A spectacular optical illusion using a chain of closed rings.

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Archimedes' seesaw

In this experiment, we use buoyancy to study the balance of two glasses of water.

Properties of matter: mass, volume and density

In certain cases, liquids do not mix together, and form layers instead. See what happens when we...

Hot air balloon

A hot air balloon is a balloon aircraft which is lifted by hot air.

Boiling at room temperature

Water boils at 100 degrees Celsius. But is it possible to boil water at room temperature?

Kepler´s laws of planetary motion

The three important laws describing planetary motion were formulated by Johannes Kepler.

Balloon on a skewer

Learn how to pierce a balloon without popping it.

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