[ExI] Pesky Neutrinos

[john clark]

--- On Mon, 10/31/11, Adrian Tymes <atymes at gmail.com> wrote:

On Oct 31, 2011, at 2:03 PM, Adrian Tymes wrote:

"Say you have 2 points, A and B.  Both start off at time T, according to their local clocks (previously synchronized to some third source"

But if they are moving relative to each other the clocks will not remain synchronized, each will see the others clock as running slow; this has nothing to do wit theory, its a experimental fact that has been observed many times in the lab and so will remain true even if Einstein is wrong.

"Someone at A asks a question at time T.  The question contains a representation of T, so others can know when - according to their own clocks - it was asked."

But the "T" at point A and the "T" at point B are NOT the same.

"The question is transmitted by some means - FTL or not - and arrives at point B at time T+X as measured by B's clock, X being the transit time."

So when A sends the question the fellow at point A looks at his clock and is says 3PM, and through a telescope he looks at the clock at point B and it says 2PM.

"Someone at point B transmits a reply"

So when he sends his answer the fellow at point B looks at his clock and is says 2PM and through a telescope he looks at the clock at point A and it says 1PM.

 "It arrives at point A at time T+X+Y as measured by A's clock."  

Your notation is all screwed up, you're using the same symbol "T" for A's clock as observed by A and A's clock as observer by B and B's clock as observed by B and B's clock as observed by A, and that just won't work because they are all different. The reply arrives at A at 1PM on A's clock plus the time it takes to make a round trip between A and B. Nature always arranges things so that if the message speed is limited by the speed of light you will never get a answer before you ask a question, so in this example the round trip message time would be 2 hours or more so the answer to your question would always arrive after 3PM, the time according to your clock you asked the question. But if your message can move faster than light you could get the answer before 3PM, and that would be very odd indeed.

  John K Clark





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