28 enero 2015
Imagine eyeglasses that can go quickly from clear to shaded and back again when you want them to, rather than passively in response to changes in light. Scientists report a major step toward that goal, which could benefit pilots, security guards and others who need such control.
http://feeds.sciencedaily.com/~r/sciencedaily/~3/VHaD-y_5kiM/150128113951.htm
