Surface tension

Surface tension is the property of a liquid that allows it to obtain the smallest surface area possible.

Related extras

Thermal expansion of bridges

The length of the metal frameworks of bridges change when the temperature changes.

The magic chain

A spectacular optical illusion using a chain of closed rings.

Types of waves

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


A spacecraft on its path is in a constant state of free fall.

Well-known astronomers and physicists

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

Sir Isaac Newton

Newton, one of the greatest physicists, has laid down the basics of mechanics. In this video we...

Putting a candle out with carbon dioxide

What should we look out for in wine cellars? In this experiment we produce carbon dioxide with...

Re-lighting a candle

Can a candle be re-lit if the flame of the match does not even touch it?

Added to your cart.