3 ms·
What's the distance between two points when measured from a third reference frame moving at the speed C?
by snarfy 11y ago
What's the distance between two points when measured from a third reference frame moving at the speed C?
- ryandamm 11y agoI don't think you can have a reference point moving at speed C, the universe throws a 'divide by zero' exception.
- snarfy 11y agoWhile true, I thought in QM you had to evaluate all probabilities, even those where the speed is > C.
- Manishearth 11y agoNope. In QM you have probabilities where energy conservation is violated for a little bit of time, or where a particle appeared to jump in a distance longer than allowed. This doesn't mean you can have reference frames moving at the speed of light.
- gdavisson 11y agoYou can't use a reference frame moving at c -- it'd be like trying to use a coordinate system where the X and Y axes are parallel to each other. Also, distance isn't really what locality is about; it's really about the causal sequence of events. If two events are close enough in time and far enough in space that light couldn't get from one to the other (in jargon: they're separated by a spacelike interval), then there'll be some reference frames where one happened before the other, and some where they happened in the opposite order. So if one of the events caused the other, there are reference frames where the cause came after the event. So nonlocality violations imply that effects can come before causes in at least some reference frames. That's why people don't like it.