The brachistochrone problem

Find out whether the marble reaches the finish line faster on the straight or on the curved slope.

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

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Surface tension

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

The faithful cork

How does a piece of a cork behave on the surface of a glass of water? You can examine that in...

Properties of matter: mass, volume and density

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

Simple harmonic motion and uniform circular motion

Simple harmonic motion can be considered to be the one-dimensional projection of uniform...

The clever karate master

Can we break a stick with the weight of only a few sheets of paper?

String saw

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

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