* Danelle Brown <[EMAIL PROTECTED]> [2004-04-19 03:32:24 -0400]: > Alright, so what did this post originally branch from? The twin paradox? > First of all, the traveling twin is no longer in an inertial frame the > moment he begins to decelerate to turn back around to visit his twin back > on earth. So that's where the real confusion begins. (If that wasn't the > issue, I'm sorry I got involved.) But here's an explanation that might > help when thinking about relativity. > > ... They infer that time in the moving rocketship frame is slower than > their own time. > > Conversely, rocketman (hee hee, great flick!) sees his clock beam > straight up and down, and sees the longer hypotenuse-path of his > planet-bound friend, inferring that planet-person's clock is running > slower than his own. > > What this means to you, gentle reader: Any clock moving at or near > relativistic speeds to you is going to look like it's incrementing > "slower." (This has been verified by fly boys in the airforce.) And > any clock that is observed from this rapid frame is also going to look > like it's moving slower. No clock is ever going to look like it's > speeding up, unless I missed some subtle point to your argument > wherein you claimed clocks were "speeding up." > > ... > > Are we more confused now?
Eh, yeah, just a little bit. Here's a neophyte question. So if Alice zooms out from where Bob stands a good long ways at a substantial fraction of the speed of light, to Alice, Bob's clock would slow down. And to Bob, Alice's clock would also slow down. Then if Alice quickly changed directions and came back to the same spot, coming in Alice's clock would look slow to Bob, and at the same time Bob's clock would look slow to Alice. As far as I understand it, to each one, it would appear that that one had gone through more time than the other. What went on here? After Alice's return, is Alice or is Bob "older?" Or are they the same? This is what always puzzled me. Is this question even sensical? Where should I read to understand this better? > -Danelle ;D -- Arlie Capps (soon to be no longer a) CS student at BYU
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