Quantum clock: rotating atomic spins have been used to measure the time it takes for quantum tunnelling to occur. (Courtesy: iStock/agsandrew) The time it takes for an atom to quantum-mechanically ...

For the first time, researchers have been able to measure the quantum state of electrons ejected from atoms that have absorbed high-energy light pulses. This is thanks to a new measurement technique ...

Scientists have measured the shortest unit of time ever: the time it takes a light particle to cross a hydrogen molecule. That time, for the record, is 247 zeptoseconds. A zeptosecond is a trillionth ...

In 1797, English scientist Henry Cavendish measured the strength of gravity with a contraption made of lead spheres, wooden rods and wire. In the 21st century, scientists are doing something very ...

A millimeter might not seem like much. But even a distance that small can alter the flow of time. “This is fantastic,” says theoretical physicist Marianna Safronova of the University of Delaware in ...

In a first-of-its-kind experiment, researchers have captured quantum uncertainty in real time using ultrafast pulses of light. Nearly a century after Werner Heisenberg proposed the uncertainty ...