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A force can be measured by measuring the twisting of the torsion wire in a torsion balance.
A spectacular optical illusion using a chain of closed rings.
What should we look out for in wine cellars? In this experiment we produce carbon dioxide with...
It is a well-known phenomenon that the sound of an approaching sound source is higher than that...
Learn how to pierce a balloon without popping it.
High speed generates a lift on aeroplane wings due to their asymmetrical profile.
Find out how to move the straws without touching them, using the phenomenon of resonance.
A hot air balloon is a balloon aircraft in which is lifted by hot air.