Inexpensive 'nano-camera' can operate at the speed of light

A $500 "nano-camera" that can operate at the speed of light has been developed by researchers in the MIT Media Lab. The three-dimensional camera, which was presented last week at Siggraph Asia in Hong Kong, could be used in medical imaging and collision-avoidance detectors for cars, and to improve the accuracy of motion tracking and gesture-recognition devices used in interactive gaming.

Speed-of-light fluctuations prompted by ephemeral vacuum particles

Two forthcoming research papers question whether or not the nature of a vacuum remains static.

Entering the quantum Internet at the speed of light

A team of Innsbruck University physicists have managed to directly transfer the quantum information stored in an atom onto a particle of light - theoretically allowing data to be sent over optical fiber to a distant atom.

Was Einstein wrong? Speed of light appears to have been broken

European scientists believe they've observed subatomic particles traveling faster than the speed of light - something that Einstein's theory of relativity says should be impossible.

Time travel proved impossible, physicists claim

A group of physicists at the Hong Kong University of Science and Technology (HKUST) say they've proved that single photons cannot travel faster than the speed of light in vacuum, effectively putting the kibosh on the idea of time travel.

Speed of light limiting stock trading, says physicist

Stock exchange trades now happen so quickly that the speed of light has become a factor, and exchanges may have to be relocated as a result, say researchers.