Magnetism
A Czech design studio is readying a levitating computer mouse for release that's been created to help prevent Carpal tunnel syndrome, a painful condition that can strike musicians, assembly-line workers, typists and computer users (to name a few). Read More
Left to its own ways, light will follow the same path through an optical system whether the system is being used as a camera lens or as a projector. This is called time-reversal symmetry, or reciprocity. As many new applications and methods would be enabled by access to a non-reciprocal optical system, it is unfortunate that they have been so difficult to come by. But now researchers at Stanford University have discovered how to make such non-reciprocal systems by generating an effective magnetic field for photons. Read More
