Weightlessness

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

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Submarine operation

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

Torsion balances

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

Boiling at room temperature

Water boils at 100 degrees Celsius. But is it possible to boil water at room temperature?

Beverage machine - Part 2

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

Suction pumps and direct action pumps

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

Physicists who changed the world

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

Rock-paper-scissors

In rock-paper-scissors, the least popular choice of players is paper. But is it really the...

Re-lighting a candle

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

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