or log in
A spectacular optical illusion using a chain of closed rings.
This animation introduces the studies of astronomers and physicists whose works...
Let's use musical instruments and our vocal cords as sources of sound.
A spacecraft on its path is in a constant state of free fall.
Is it possible to turn pure water into a soft drink in a few seconds?
Observe what happens when making sounds with shorter and shorter pieces of the same straw.
How does a piece of a cork behave on the surface of a glass of water? You can examine that in...
Water boils at 100 degrees Celsius. But is it possible to boil water at room temperature?