Types of Waves: In Physics, waves are a fundamental phenomena that describes the transmission of energy and information through a medium of an empty space. These waves are characterised by their ...

A perpetual motion machine is (as the name implies) a machine that moves perpetually; it never stops. Ever. So if you created one today and set it going, it would keep on going until the Big Freeze.

Researchers at Seoul National University and Kyung Hee University report a framework to control collective motions, such as ...