Properties of matter: mass, volume and density

In certain cases, liquids do not mix together, and form layers instead. See what happens when we pour water over raspberry syrup.

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The magic chain

A spectacular optical illusion using a chain of closed rings.

Straw flute

Observe what happens when making sounds with shorter and shorter pieces of the same straw.

String saw

In this experiment we prove that it is possible to cut a bottle with just a string.

Types of waves

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

Frog violin

Is a matchbox able to imitate the croak of frogs? With the following experiment we reveal the...

Characteristics of sound waves

This animation explains the most important characteristics of waves through sound waves.

Let’s get to know the sources of sound!

Let's use musical instruments and our vocal cords as sources of sound.

The Doppler effect

This lesson helps to understand the Doppler effect.

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