IN a paper under this title which has recently appeared, 1 we have described and discussed observations which have led us to ... a dark background. The depolarisation of the scattered light ...

U.S. stocks closed broadly lower Monday as a banner year on Wall Street looked set to finish on a sour note. The S&P 500 fell 1.1%, its third straight decline. Roughly 90% of stocks within the ...

In new research, physicists have theorized a bold way to change it up by entangling two particles of very different kinds – a unit of light, or a photon, with a phonon, the quantum equivalent of a ...

The re-entry of what is believed to be a defunct Chinese satellite over US skies last week created a spectacular light show but posed no real danger, according to space experts, who also said the ...