Some structures are so large they cross the line from engineering into planetary physics. The Three Gorges Dam, the enormous hydroelectric project spanning the Yangtze River in China, holds back so ...

Earth’s rotation has been measured many times over — but never like this. In a first, scientists used entangled quantum particles called photons to reveal the rate at which the globe spins. The feat ...

This video explores the coin rotation paradox, emphasizing the counterintuitive nature of perspective and perception regarding the rotation of circular objects such as wheels and discs. It illustrates ...

We know Earth’s rotation on a cosmic scale, but seeing it close up requires quantum mechanics. Interferometry is the use of light waves, sound, etc., to identify changes in matter or motion. New ...

Circular thinking: light a ring laser has been used to measure the Earth’s rotation. (Courtesy: iStock/amtitus) A gyroscope sensitive enough to detect Earth’s rotation has been created using a ...

Quantum mechanics tells us that a particle can never be perfectly still. But how precisely can it be oriented? A research team at the University of Vienna, together with colleagues at TU Wien and Ulm ...