For two centuries, students have learned that heat flows and engines work according to rigid limits that no machine can beat.

The universe is generally believed to be expanding at an accelerating rate, thanks to a mysterious force dubbed dark energy. But how exactly does this force work? Researchers in the UK have conducted ...

Scientists have observed “bending” atoms using a crystal grating—an experiment once believed impossible at the high energies required. The authors of a new, non-peer reviewed study detail how the a ...

The University of Wisconsin’s physics department was recognized for its experimentation and creation of one of the most highly-efficient atomic clocks ever. The optical lattice atomic clock is behind ...

While many Earth-based experiments have been run to try to detect dark matter, the mysterious substance remains elusive. Now physicists have proposed a new experiment that would try to find signals by ...

Physicists are learning to treat light not as an untouchable beam that simply passes through matter, but as something that ...

A team has succeeded in computing how atomic nuclei of the Calcium element behave in collisions with electrons. Results agree very well with available experimental data. For the first time, a ...

Ultracold atoms have successfully mimicked a fundamental quantum effect normally found in electronic circuits.

Yuri Ralchenko led one of the oldest teams at the National Institute of Standards and Technology. The fate of some experiments hangs in the air. Lost Science Yuri Ralchenko led one of the oldest teams ...

If you walk down the wrong path, you’re going to miss it. And if you visit too close to dusk, you might get lost trying to leave. That was probably the intent of the scientists who were doing nuclear ...

West Germany has allocated 30,000, 000 Deutschmarks ($7, 500, 000) “to finance atomic experiments in Israel,” and Joint work is now under way between West German and Israeli specialists “creating ...

Atomic clocks. They almost sound like something out of science fiction, or an experiment confined to some elite physics lab, but in reality, they’ve been around since the 1950s in one form or another.