How do we know the speed of light – and why does it have a speed limit at all? Leah Crane explores the history of one of the ...

If so, laws might change when the universe itself changes phase. In the early universe, as temperatures and densities shifted, forces split apart from a unified origin. What we call “laws” may be like ...

Researchers from the Department of Molecular Physics at the Fritz Haber Institute have demonstrated the first magneto-optical ...

When an intense laser pulse hits an electron at rest, the latter performs a quiver motion with the frequency of the light ...

Researchers built a silver-grooved chip that channels laser energy into nanometer-spaced peaks, beating the diffraction limit and aiding light-matter studies.

When an intense laser pulse hits a stationary electron, it performs a trembling motion at the frequency of the light field.

While the terms "quantum physics" and "Theory of Relativity" are used casually every day, not many people know what they really mean. Yet these theories have had a profound impact not only on science ...

The sky above San Francisco was the color of television, tuned to the president. The reason for the orange—and for the wan yellows and sickly grays that followed—is a combination of atmospheric ...

Can we turn back time? Ask a savvy physicist, and the answer will be “it depends.” Schemes for retrograde time travel abound but usually involve irreconcilable paradoxes and rely on outlandish ...