Plato was the first to suggest that the good is diffusive. It’s in the very nature of the good to expand, to pour itself out. Why? Of course the ancient Greeks could go no farther than to identify the ...

Imaging through scattering and diffusive media has been a challenge for many decades, with numerous solutions reported so far. In principle, images distorted by random diffusers (such as frosted glass ...

Real invisibility cloaks are rather complex and work in certain situations only. The laws of physics prevent an optical invisibility cloak from making objects in air invisible for any directions, ...