When humans kick swim through water, vortices form around their legs, generating the force that propels them forward. However ...

Researchers at University of Tsukuba have discovered that the structure of vortices generated around a swimmer's feet changes with increasing speed during underwater undulatory swimming. Specifically, ...

Cue the development of the 3D printed water jet engine (YouTube link, embedded below). The basic principle of operation is simple. Water is sucked through an inlet, where it is accelerated by a ...