4 ms·

So they would know exactly when to fire their local time guns

• trackone 6y ago
  I am not sure I understand. If there were local time guns, wouldn't they just fire theirs when they heard the sound of the central gun to help sync time with those farther away? They couldn't fire their gun 10 seconds in the past when they heard the central gun's sound.
  • raldi 6y ago
    Hmm, either option would actually lead to mass confusion; various intermediate locations wouldn’t know which cannon was which.