Recent content by Acumen

So as I understand it, non-inertial frames allow things to travel with a perceived speed faster than light, which is called proper velocity? Why would the beacons need to be traveling with B if he only records the light when he is about to leave and as soon as he returns to the inertial frame?

So even if he never observes the laser hitting the second beacon until the moment he returns, hasn't he now had only 1 second pass and sent information 744,000 miles? Does this not mean that even though he knows 4 seconds passed from A's perspective, that from his perspective a signal was sent...

I was under the impression length only contracted in the direction of motion? Since the laser is perpendicular should not the distances remain the same? Also if B does observe 2 beacons hit due to contraction, to me it seems that even though the speed of the laser is constant, that the speed of...

Yes that much better than 4, oops. So that makes sense to me for A, but if B sees 2 are hit, that means that the light traveled 744,000 miles (round trip 2 beacons) in 1 of B's seconds. That would mean it traveled faster than the speed of light, no?

At an origin there is an observer (A) who fires a laser at a series of beacons in a straight line spaced 186,000 miles (1 light second) apart each. At the same time as the laser is fired, a second observer (B) starts traveling on a path perpendicular to that of the laser, stopping and...