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Submarines submerge and surface by changing the average density of the hull.
The length of the metal frameworks of bridges change when the temperature changes.
In this experiment, we use buoyancy to study the balance of two glasses of water.
We can further develop the machine we presented in the previous video, so it can dispense...
A spectacular optical illusion using a chain of closed rings.
Experience the relationship between pitch and frequency through measurements.
Direct action pumps and suction pumps are among the simplest water pumps.
These great scientists had a tremendous impact on the advancement in physics.