Sometimes by necessity and sometimes because people on TikTok like to hide things, it can be hard to understand the trends taking over the platform. TikTok is famous in part for making obscure, ...

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 ...

(Nanowerk News) Acoustic waves in gases, liquids, and solids usually travel at an almost constant speed of sound. So-called rotons are an exception: their speed of sound changes significantly with the ...