Tag

Buoyancy

All articles tagged with #buoyancy

Superhydrophobic tubes stay afloat, even when punctured
technology28 days ago

Superhydrophobic tubes stay afloat, even when punctured

Researchers at the University of Rochester have etched aluminum tubes to create micro- and nano-pits that render the surface superhydrophobic. When placed in water, the tubes trap a stable air bubble and stay buoyant even if heavily damaged; a middle divider keeps the bubble in place, enabling linked tubes to form rafts for ships, buoys, and floating platforms with potential renewable-energy applications.

Mass vs. Weight: Understanding the Difference.
science3 years ago

Mass vs. Weight: Understanding the Difference.

Mass and weight are related but separate concepts in physics. Mass is an intrinsic property of an object, while weight is the force exerted on an object's matter by a gravitational field. The equivalence principle states that gravitational mass and inertial mass are equivalent. Buoyancy explains why floating objects still have weight, as they displace fluid and experience an upthrust equal to the weight of the fluid displaced. The weight of an object is spread out across the planet's atmosphere when it flies, making it difficult to measure.