Ah, the stately hot air balloon. Not really useful for all that much except for having a grand old time floating around the skies, it's still a marvel of simple physics. Fill a giant balloon with air.

Everyone loves clouds. Although they are gigantic and beyond our reach, they inspire us with their wide variety of shapes. I mean, who hasn't played the game of guessing what a cloud looks like? Of ...

The Cartesian Diver: this is a classic demo named after the17 th-century philosopher and mathematician René Descartes. Buoyancy is the force that decides whether an object will sink or float, and has ...

It's a common swimming pool game: Force a buoyant ball underwater and let it go. The ball springs to the surface and jumps into the air. But, submerge the ball deeper underwater and the effect is ...

Inspired by the need to safeguard marine animals and promote sustainable solutions within marine environments, an interdisciplinary team of researchers from King Abdullah University of Science and ...

Legend has it that the ancient Greek scientist Archimedes discovered the law of buoyancy in a bath and ran naked through the streets of Syracuse shouting “eureka!” – or “I have found it”. That is, the ...

A hollow plastic sphere is held below the surface of a fresh water lake by a cable anchored to the bottom of the lake. The sphere has a volume of 0.300 cubic meter, and the tension on the cable is 900 ...