3 ms·

I'm not entirely sure what your objection is; light does move in time.

• CuriousSkeptic 9y ago
  Still learning ;) But IIUC, could you send a clock along 45-degree angles in a minkowski diagram it would not measure any time. But perhaps there is time there relative to an observer at 0-degrees? But what does that even mean then? If that observer sent a photon towards a mirror, would the photon have aged when returned to the sender?
  • soVeryTired 9y ago
    You can make your statement more accurate by saying that a clock will measure vanishingly little time as you get sufficiently close to the 45 degree line. But the 45 degree line isn't achievable. (Note I've made the same inaccuracy further up the page. Sometimes it's just easier to drop the epsilons and speak informally.) Physicists are precise people :)
    • fjsolwmv 9y ago
      Mathematicians are precise people. Physicists just assume their series converge :-)