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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Archimedes' seesaw

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

The brachistochrone problem

Find out whether the marble reaches the finish line faster on the straight or on the curved slope.

The Doppler effect

This lesson helps to understand the Doppler effect.

Torsion balances

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

What do you know about speed?

This lesson presents the concept of speed.

Properties of matter: mass, volume and density

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

Pitch and frequency, Part II

Experience the relationship between pitch and frequency through measurements.

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