Weightlessness

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

Related extras

Torsion balances

A force can be measured by measuring the twisting of the torsion wire in a torsion balance.

Properties of matter: mass, volume and density

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

Resonance straw

Find out how to move the straws without touching them, using the phenomenon of resonance.

Hot air balloon

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

Submarine operation

Submarines submerge and surface by changing the average density of the hull.

Physicists who changed the world

These great scientists had a tremendous impact on the advancement in physics.

Characteristics of sound waves

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

Kepler´s laws of planetary motion

The three important laws describing planetary motion were formulated by Johannes Kepler.

Added to your cart.