Researchers have created an optical device that can generate both electric and magnetic vortex-ring-like light patterns.
A new metasurface lets scientists flip between ultra-stable light vortices, paving the way for tougher, smarter wireless communication.
From hundreds of miles above Earth, the brutal polar vortex that gripped the Great Lakes turned into something strangely beautiful. A satellite view captured ghostly spirals of ice curling across Lake ...