Exceeding the speed of sound

What is the speed of sound? What happens when an object exceeds the speed of sound?

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The Doppler effect

This lesson helps to understand the Doppler effect.

Archimedes' seesaw

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

The magic chain

A spectacular optical illusion using a chain of closed rings.

Steam turbine

A drink can, water and a Bunsen burner can be used to create a...

Re-lighting a candle

Can a candle be re-lit if the flame of the match does not even...

Pitch and frequency, Part I

Experience the relationship between pitch and frequency through...

Let’s get to know the sources of sound!

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

String saw

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

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