It turns out there is a way for a foreign company to make it in Donald Trump’s Washington. Oura rings are on fingers from the Pentagon to Capitol Hill, tracking everything from sleep quality to ...

IN the course of some experiments preparatory to a lecture on vortex rings, I have introduced certain modifications which may be of interest to teachers and students of science.

Abstract: Dynamic scattering in Ring Core fibers (RCF) poses fundamental limitations for high-precision imaging and broadband communications, where conventional all-optical neural networks (ONNs) ...