Physicists demonstrate time reflection in microwaves for the first time.

Physicists in the US have observed time reflection in an electromagnetic wave for the first time, using a novel type of metamaterial. The result could improve wireless communication and ultimately help bring about long-sought-after optical computing. The analogue nature of this time reversal mechanism could lead to a number of applications, including combating distortion in a wireless data channel and a new generation of analogue optical computers. The research is published in Nature Physics.