资讯

Sweden’s coasts are facing a UFO problem—reports of "unidentified floating objects"—and they're creating unexpected issues at ...
How much water do you need to keep a cruise ship afloat? Less than you’d think. Archimedes’ Paradox lets you float a huge object in just a gallon or two of water. (It also shows why you’d need a ...
Some objects float in water and other sink. But did you know that you can change whether something floats or sinks by adding a substance to the water? Let's try it and see! Pour water into a cup until ...
Host Lloyd Liedtke guides students through hands-on experiments exploring buoyancy, balance and force. Learn why some objects float while others sink, how paddle boats move, and how weight and volume ...
A: “An object will float in water or in air because the object is lighter than the air or the water it displaces,” notes MU physics Professor Karen King. All forms of matter such as gases, liquids and ...
Physicists have magnetically levitated various solid objects - including gold, platinum and diamond - in cold oxygen gas for the first time. Laurence Eaves and colleagues at Nottingham University were ...