Putting a candle out with carbon dioxide

What should we look out for in wine cellars? In this experiment we produce carbon dioxide with vinegar and baking powder.

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Torsion balances

A force can be measured by measuring the twisting of the torsion wire in a torsion balance.

Types of waves

Waves play an extremely important role in many areas of our lives.

Re-lighting a candle

Can a candle be re-lit if the flame of the match does not even touch it?

Simple harmonic motion and uniform circular motion

Simple harmonic motion can be considered to be the one-dimensional projection of uniform...

Forces

The animation shows the way forces act on wheeled vehicles and vehicles with runners.

Archimedes' seesaw

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

Suction pumps and direct action pumps

Direct action pumps and suction pumps are among the simplest water pumps.

Balloon on a skewer

Learn how to pierce a balloon without popping it.

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