Scientists have demonstrated that negative refraction can be achieved using atomic arrays -- without the need for artificially manufactured metamaterials. Scientists have long sought to control light ...

Please provide your email address to receive an email when new articles are posted on . In part two of Healio’s Lost Art of Refraction miniseries, Cynthia Matossian, MD, FACS, and Arun C. Gulani, MD, ...

NEW YORK--(BUSINESS WIRE)--Smart Vision Labs, the maker of a smartphone-based autorefractor, announces the release of new data on its SVOne autorefractor being published in a leading peer-reviewed ...

With the article on the position of stars in the night sky you printed a diagram showing possible negative refraction around the ergosphere of a black hole, the zone surrounding it from which energy ...