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In rock-paper-scissors, the least popular choice of players is paper. But is it really the...
A hot air balloon is a balloon aircraft which is lifted by hot air.
Waves play an extremely important role in many areas of our lives.
Can we break a stick with the weight of only a few sheets of paper?
A force can be measured by measuring the twisting of the torsion wire in a torsion balance.
The length of the metal frameworks of bridges change when the temperature changes.
The animation shows the way forces act on wheeled vehicles and vehicles with runners.
Is a matchbox able to imitate the croak of frogs? With the following experiment we reveal the...