A space camera optical system based on an off-axis four-mirror freeform design is one such solution, offering a 70° ultra-wide field of view from a 640 km orbital altitude. This system is an ideal ...
(PhysOrg.com) -- By taking advantage of the properties of periodic systems, physicists have described how to efficiently time-reverse ultrashort electromagnetic pulses. Since a time-reversed pulse ...
Researchers in Caltech's Andrew and Peggy Cherng Department of Medical Engineering have made a major step forward in medical imaging by taking inspiration from the field of astronomy. The paper ...
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