Types of waves

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

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Suction pumps and direct action pumps

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

Hot air balloon

A hot air balloon is a balloon aircraft which is lifted by hot air.

String saw

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


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

Properties of matter: mass, volume and density

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

The development of celestial mechanics

This animation introduces the studies of astronomers and physicists whose works...

The magic chain

A spectacular optical illusion using a chain of closed rings.

Beverage machine - Part 2

We can further develop the machine we presented in the previous video, so it can dispense...

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