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A spectacular optical illusion using a chain of closed rings.
Observe what happens when making sounds with shorter and shorter pieces of the same straw.
In this experiment we prove that it is possible to cut a bottle with just a string.
Waves play an extremely important role in many areas of our lives.
Is a matchbox able to imitate the croak of frogs? With the following experiment we reveal the...
This animation explains the most important characteristics of waves through sound waves.
Let's use musical instruments and our vocal cords as sources of sound.
This lesson helps to understand the Doppler effect.