3 ms·

But it's good enough for ANTARES/KM3NET to see Cherenkov light, which I believe requires a dielectric medium.

• cozzyd 8y ago
  The problem is that radio doesn't propagate well in sea water (since it's conductive) so you can't observe the interaction from far away in the radio.
  • dukwon 8y ago
    Gotcha, thanks.