The metamaterial structure the team designed is made of a single linear elastic material. (Courtesy: Yi Chen, KIT) An unusual type of sound wave that can travel backwards in space and has previously ...

Shock waves should not be shocking—engineers across scientific fields need to be able to precisely predict how the instant ...

Pulsars suggest that ultra–low-frequency gravitational waves are rippling through the cosmos. The signal seen by ...

A scattering-invariant mode of light is generated by a spatial light modulator. This modulated beam propagates through free space (top) or a strongly scattering medium (bottom) such that the pattern ...

Astronomers have detected a gargantuan blast of energy from space that appears to be doing the impossible: Traveling seven times faster than the speed of light. This is, of course, an optical illusion ...

Acoustic waves in gases, liquids, and solids usually travel at an almost constant speed of sound. Rotons are an exception: their speed of sound changes significantly with the wavelength, it is also ...

Scientists have created a new class of laser beam that appears to violate long-held laws of light physics. These new beams, which the team calls “spacetime wave packets,” follow different rules of ...

In the 1950's, a particle physicist made a landmark discovery that changed what we thought we knew about how our universe operates. Chien-Shiung Wu did it while raising a family and an ocean away from ...

Three U.S. physicists won the Nobel Prize in Physics on Tuesday for their work that led to the detection of gravitational waves — the ripples in space-time made when black holes collide and when other ...