A research team at City University of Hong Kong (CityU) has discovered a new type of sound wave: the airborne sound wave vibrates transversely and carries both rotation and orbital angular momentum ...

The compressible Navier-Stokes equations form the cornerstone of fluid dynamics, describing the motion of viscous compressible fluids under conservation of mass, momentum and energy. By incorporating ...

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Your vocal cords vibrate 100-1,000 times a second. You can feel them vibrate if you lightly touch a finger on your throat when you speak. The localized compression of the air is called condensation.