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Information loss by asymmetry and small aperture. (A) A stone falling in a pond produces full circular waves that are centered on the impact point, and those waves would back propagate onto that same point if time could be reversed. Using this time-reversal argument, if one generates back propagating circular waves from a limited arc, they will not necessarily focus at the center. (B) Representation of how diffraction effects compete with focusing for a beam of different initial size, that is different aperture.

Correcting the eyesight of microscopes

The cornea, a focal point holed up behind the pupils, focuses light from the screen to the back of the eye. Be that as...
Superlens Set New Limit under Microscope

Superlens Set New Limit under Microscope

From last centenary, microscopes allows scientists to make large discoveries. Although, the physical laws supreme light limits conventional lenses in significant way. They only...