Recent content by AntigenX

Hello all, Thanks for your co-operation and support and replies and (at the least) your patience! From re-reading all the posts, I gather that "the clock in a reference frame would accumulate more time, from which the clock matching light flash was emitted". I think, for matching the...

Whatever way (1,2 or 3) we may choose, we will consider that it will propagate at the speed of light. Now, what reason we have to say that B doesn't get the information until later? No intuition required. Both A and B receive their start signal, immediately send two way echo, and further...

Hello kev! Got it. Now there is a problem (for me, of course) here. Where to draw the line? In the space time diagram? If yes, Which one? When A is stationary or B is stationary? I don't think that's possible for any of them. As I proposed above, Let's simplify this with two "two way"...

:smile: Exactly! :approve: I never thought you would be so sporty. Though, I should have understood this from number of your posts :wink:!

Hello DaleSpam, nice to see you back! Yes, It is clear from spacetime diagram, but just as we required light flash to match clocks A and B, we should require light flash for telling clocks A and B, about when the other's clock started. And if we do that, suppose by (two, for bot A and B, as...

Sure, they are bound to disagree, but I am not getting how will A decide when did B start and vice versa. As I said earlier, some communication between A and B is required for them to comunicate, so that they come to know when the other clock started wrt himself. Exactly, Once all the clocks...

I still can't digest how will A and B decide whose clock started first (according to themselves, of course). Any better way? I understood the purpose of clocks everywhere, but don't think it's appropriate, because it tells A and B instantaneously about when other's clocks started. How is this...

Served me better :smile:. My guess was (in this case), that the red/blue shift was due to apparent (wave)length contraction/expansion when an observer is in relative motion with the source of light.

That may not be true. Consider two stationary (wrt each other) observers separated by some distance along x axis. Now if there is a light flash at origin, they won't agree about the time of the flash, even though their clocks were synchronized. They can agree only after considering the time the...

I hardly understand anything about relativity (as would be evident from my threads and posts), and thus, this dumb question. If there is only length contraction, and not length expansion, why do we have two shifts, namely redshift and blue shift? should not only there be only blue shift due to...

Precisely! I should have done it this way, poor me... Yes. got it. got it. got it. Edit: Just for clarification, Though O & A are in same rest frame, O will agree that the light signal reached to both A & B simultaneously. I don't see any reason for A to think so. How will B decide...

I want both the clocks started simultaneously by somebody stationary w.r.t. clock A or B, and suggested method can do that, If the light flesh is emitted from closer to A, such that the light beams have to cover same distance in both direction in the source's rest frame. In such a case, As is...

Sorry people for very very late reply. I was trying to learn some space time diagrams, but I think it will take some time to learn their proper representation and more importantly, their correct interpretation. Meanwhile, thank you all, especially, Janus, DaleSpam, Mentz114 and others for their...

That does in fact, but I'm afraid not much. Can you suggest where should I start, to get 'real' understanding of space-time diagrams? from word go?

Thank you for the bold face wrong! Though, I must say, you are still not getting my point. From post#1 of this thread, I have been asking "is it at all possible for any observer to make two clocks (in relative motion) read zero reading at some arbitrary instant?". I haven't got any plain...