4 ms·

They all hear an announcement at the same time via the hotel’s speaker system. (And we’re already ignoring so many laws of physics that the speed of light is th

• Jyaif 5y ago
  In a universe with an infinite speed of light, can there even be any kind of waves? Do physical waves not also propagate instantly?
  • danbruc 5y ago
    What kind of waves? I guess you could at least have a light source that periodically gets brighter and dimmer and a detector at the other end of the universe would detect the brightness oscillation and it would not really make any difference whether the light propagates with an finite or infinite speed besides of course the propagation time.
    • Jyaif 5y ago
      > What kind of waves? Any wave! Including sound waves. > I guess you could at least have a light source that periodically gets brighter and dimmer Would it even be possible to make a timer that periodically gets brighter and dimmer in a world with an infinite speed of light? Would the crystal oscillators in CPUs still work? I believe that some processes (like nuclear decay) stop happening when there's an infinite speed of light. I guess my overall question is: does time still exist in a world with an infinite speed of light?
      • codeflo 5y ago
        Can you explain how all of that would follow? Naively, if we take the limit of c to infinity, aren’t we simply back to Newtonian physics? Why wouldn’t a pendulum work, for example?
• lisper 5y ago
  The laws of physics get chucked out the window the moment you say "infinitely many rooms".