Two independent groups of physicists in Germany and China have built portable optical clocks that are more accurate than the best caesium devices. They say that their instruments could be used to compare the timekeeping of different optical clocks distributed across the...
It missed the historic discovery, but the Virgo lab in Italy is now primed to extend LIGO’s reach and precision.
A tsunami’s immense wall of water may not be stoppable. But there may be a way to take the ferocious force of nature down a few notches, using a pair of counterwaves. If released at the right moment, a type of sound wave known as an acoustic-gravity wave could subdue...
A mechanical metamaterial that responds strongly to motion from one direction, while blocking it in the other, has been developed by an international team of researchers. The research, which in principle at least breaks a fundamental assumption of mechanical engineering,...
The technology behind materials used in artificial muscles and ‘smart clothes’ could be significantly advanced thanks to new Irish research. Read the associated Physical Review Lettters paper.
An orbiting telescope has just spotted a strange X-ray signal. It’s raising hopes that the source may be dark matter. That’s the unknown — and unseen — substance that scientists believe constitutes most of the matter in the cosmos.
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