For the first time, researchers have seen how light behaves during a mysterious phenomenon called 'imaginary time'.

A detailed experimental investigation of the effects of external optical injection on a Fabry Perot laser when in continuous wave (CW) mode and in gain switched mode is presented. Such detailed ...

New research published in Physical Review Letters suggests that superconducting magnets used in dark matter detection experiments could function as highly precise gravitational wave detectors ...

A new material developed at Penn State defies a fundamental law of physics, opening doors to highly efficient solar cells.

A phase change in post-perovskite materials at the so-called D” discontinuity is also evidence for long-predicted slow, convective flows in the mantle itself ...

Researchers at the Leibniz Institute of Photonic Technology (Leibniz IPHT) in Jena, Germany, together with international ...

Quantum tunnelling — when a particle skips through a barrier that classical physics would forbid — happens faster when objects have less energy, find physicists who worked out a way to probe photons ...

We report measurements and traceability of terahertz wavelength and frequency. Terahertz frequency comb is used for traceability of terahertz frequency. Frequency of a stable source is precisely ...

Gamma rays, X-rays, ultraviolet, visible, infrared, microwaves, and radio waves are all forms of light that make up the electromagnetic spectrum, each defined by its wavelength.

Tsunami News. Causes of tsunamis, status of tsunami devastated regions, and locations where scientists predict tsunamis might occur in the future. Read about tsunamis and earthquakes.