You are headin away from me at any speed. I send a signal that reaches you instantaneously in my frame. You reply with a signal that reaches me instantaneously in your frame, which arrives before I sent my signal.
What is heading away from me at any speed, got to do with it, is it just appear to be because you know (assume in this case) that FTL is not possible ?.
As Ibix said... Google for "tachyonic anti-telephone".
Because that's the condition for the simultaneity conventions of your frame and mine to clash in a way that is paradoxical if faster than light communication is possible within relativity.
2807 Ok.
In was mention as any speed , in order for Lorentz Transformation to play a role they have to move apart close to the speed of light,than time dilation will cause the reply to be received before... but I THINK it will work only with instantaneous info transfer .
Am I 'm even close
It's more a proof by contradiction, because the argument that causal effects cannot propagate faster than ##c## is that if you assume it is possible, contradictions appear.
You would be better served by the wikipedia article: https://en.wikipedia.org/wiki/Tachyonic_antitelephone
There is indeed no way of making it through special relativity unless you have thoroughly understood the relativity of simultaneity.
No. The only thing moving faster does is let you detect the effects more easily. For the case where you pass me at time zero and I send you a tachyon pulse at time Tlater, the "reply" arrives ##v^2T/c^2## seconds before the original signal. Either T needs to be really huge or v needs to be very close to c for this kind of gap to be detectable. But it's there for any speed.
An oxymoron is a linguistic device, where you combine two words that ought not to go together. Perhaps "thought experiment" is a relevant example.
A claim that speed is both limited and unlimited would be a contradiction, not an oxymoron. But no such claim has been advanced in this thread.
The relativity of simultaneity is the single most difficult concept in relativity. Students struggle more with that than anything else.
http://www.theculture.org/rich/sharpblue/archives/000089.html
Decent article. The comments might be subtitled "fifty ways to miss the point", though.
Let's say I'm here on Earth you're on your ship about a light year away traveling away from Earth with some speed. I send you an instantaneous signal when my clock says it's 1100. At this instant for me, your clock says, say 1340. You get this signal at 1340 your time. However, due to the fact that you're moving relative to me, and the relativity of simultaneity, for you at the instant your clock says 1340, my clock says it's 0300. So, you send an instantaneous signal back to me, and it arrives to me before I ever sent one to you. Of course, for me, when the time was 0300, your time was something like 0600, so I can respond back asking about this bizarre message I receive from you, and then you're confused because that comes before you ever replied to my first one, and this keeps going.
Some of the comments are from Rich the writer himself and some others are interesting and informative I didn't go through all of them( did you ? ) so maybe fifty is the right figure , ☺
I don't have to be there physically do I ? We can replace me with a device that just return the information back to us at Earth, don't tell nobody about it and make a lot of money. We tried to get patent on it but every time at appears that it already patented .
I didn't go through them all. The author's were good, but a lot of the time he was replying to say "no, you've missed the point". And note the comment he added at the top of the article. Maybe there are insightful comments, but they seem to be a bit lost in the noise.