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A comment on Physicists Create Time-Reversed Waves of Optical Light.

Re:Physicists Create Time-Reversed Waves of Optical Light by carapace on Thursday December 17, 2020 @04:49PM (#25460958)
Sounds like a phase-conjugate mirror.
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Re:Physicists Create Time-Reversed Waves of Optical Light by amai on Friday December 18, 2020 @02:11PM (#25470713)
See also https://en.wikipedia.org/wiki/Phase_conjugation and https://en.wikipedia.org/wiki/Time_reversal_signal_processin...
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