When honey bees find a good source of food, they return to their hive and perform a waggle dance. It consists of a series of movements that communicate the direction and distance to nectar, pollen or ...

In everyday life, designing spaces that both let air flow and absorb sound can be a tricky balancing act. Usually, materials ...

Abstract: Experiments carried out at NUWC's Seneca Lake facility in the summer of 2020 demonstrate the efficacy of underwater navigation via a single spiral wavefront (SWF) acoustic beacon. An SWF ...

Abstract: In order to solve the problem of large sidelobes in traditional high-order mode cavity slot antenna design, an effective method based on wavefront phase compensation is proposed in this ...

Physicists have watched a quantum fluid do something once thought almost impossible: stop moving. In experiments with ultra-thin graphene, researchers observed a superfluid—normally defined by its ...