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.

Here is another one of those great questions that promotes epic "office discussions". (this one sent in by Russ) "An Olympic-sized swimming pool is filled with 660,000 US gallons of water. An ...

Swedish company NoviOcean has tested a third-gen prototype of its combination wind/solar/wave energy platform, a floating platform rated for up to 1 megawatt of consistent clean energy around the ...

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 ...

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 ...

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 ...

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 ...