3 ms·

See also https://en.wikipedia.org/wiki/Phase_conjugation https://en.wikipedia.org/wiki/Phase_conjugation and https://en.wikipedia.org/wiki/Time_reversal_signal

by amai 6y ago

See also https://en.wikipedia.org/wiki/Phase_conjugation https://en.wikipedia.org/wiki/Phase_conjugation and https://en.wikipedia.org/wiki/Time_reversal_signal_processing https://en.wikipedia.org/wiki/Time_reversal_signal_processin...