Over the past few years, engineers and material scientists have been trying to devise new optical systems in which light particles (i.e., photons) can move freely and in useful ways, irrespective of ...

Optical computing has emerged as a powerful approach for high-speed and energy-efficient information processing. Diffractive ...

This news release is available in German. How can light which has been captured in a solar cell be examined in experiments? Jülich scientists have succeeded in looking directly at light propagation ...

In the global race to measure ever shorter time spans, physicists have now measured a process that lies within the realm of zeptoseconds for the first time: the propagation of light within a molecule.

The speed of light is a fundamental constant, approximately 299,792,458 meters per second. It's the same for all observers and hasn't changed measurably over billions of years. Nothing can travel ...

Scientific American is part of Springer Nature, which owns or has commercial relations with thousands of scientific publications (many of them can be found at www ...