A longstanding goal in physics has been to link general relativity with quantum theory and so unify the forces of nature. Theories of quantum gravity, however, are plagued by the weak theoretical ...

Transferring optical information in free space with large bandwidth and high transmission capacity has gained significant attention in various applications, such as remote sensing, underwater ...

There is just one, lonely non-Retina MacBook Pro left available to buy from Apple. Not only is it the last of its kind, it’s also the only Mac left with a built-in optical disc drive. There have been ...