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A force can be measured by measuring the twisting of the torsion wire in a torsion balance.
This animation introduces the studies of astronomers and physicists whose works...
The three important laws describing planetary motion were formulated by Johannes Kepler.
In this experiment we prove that it is possible to cut a bottle with just a string.
The animation shows the way forces act on wheeled vehicles and vehicles with runners.
In this experiment, we use buoyancy to study the balance of two glasses of water.
What is the speed of sound? What happens when an object exceeds the speed of sound?
A hot air balloon is a balloon aircraft which is lifted by hot air.