Precision metrology closes in on dark matter

Optical clocks are so accurate that it would take an estimated 20 billion years—longer than the age of the universe—to lose or gain a second. Now, researchers in the U.S. led by Jun Ye's group at the National Institute ...

Graphene enables clock rates in the terahertz range

Graphene—an ultrathin material consisting of a single layer of interlinked carbon atoms—is considered a promising candidate for the nanoelectronics of the future. In theory, it should allow clock rates up to a thousand ...

High-gravity water waves

What might look like jelly being stirred is actually water subjected to 20 times normal Earth gravity within ESA's Large Diameter Centrifuge—as part of an experiment giving new insight into the behavior of wave turbulence.

Was physics really violated by EM drive in 'leaked' NASA paper?

Ever since NASA announced that they had created a prototype of the controversial Radio Frequency Resonant Cavity Thruster (aka. the EM Drive), any and all reported results have been the subject of controversy. And with most ...

US military unveils non-lethal heat ray weapon

A sensation of unbearable, sudden heat seems to come out of nowhere -- this wave, a strong electromagnetic beam, is the latest non-lethal weapon unveiled by the US military this week.

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