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Physics for a friend....Twins Paradox
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<blockquote data-quote="Janx" data-source="post: 7547157" data-attributes="member: 8835"><p>I've got a friend who's got a question about the Twins Paradox:</p><p></p><p>"Why is one twin seen as the traveler, moving away and returning at near lightspeed and aging slower? Everything is relative, is it not? Why isn't this scenario seen as both twins moving away from one another and back at equal velocities, in which case both of their clocks would be equally slowed, and they would meet up again, having aged at the same rate?"</p><p></p><p>For the rest of us, the Twins Paradox, as I understand is that we have a pair of twins. We launch one twin out at super-fast speed on a looping trip (so he returns). The magic of Einstein says time slows down for the faster twin, and thus when they re-meet the "faster" twin will have aged less.</p><p></p><p>My querulous friend appears to think that the effect of motion would be relative to each other such that stuff he says might be true.</p><p></p><p>I told him I'd check with my physics friends, and here we are.</p><p></p><p>Personally, I suspect the fact that one twin experiences additional acceleration and momentum (the faster twin) is the contributing factor to the time dilation. One twin experienced something sciencey the other did not, therefore there's a difference as yet to be explained by an expert. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p><p></p><p>Can any of y'all spare a moment to explain it?</p><p></p><p>Thanks!</p></blockquote><p></p>
[QUOTE="Janx, post: 7547157, member: 8835"] I've got a friend who's got a question about the Twins Paradox: "Why is one twin seen as the traveler, moving away and returning at near lightspeed and aging slower? Everything is relative, is it not? Why isn't this scenario seen as both twins moving away from one another and back at equal velocities, in which case both of their clocks would be equally slowed, and they would meet up again, having aged at the same rate?" For the rest of us, the Twins Paradox, as I understand is that we have a pair of twins. We launch one twin out at super-fast speed on a looping trip (so he returns). The magic of Einstein says time slows down for the faster twin, and thus when they re-meet the "faster" twin will have aged less. My querulous friend appears to think that the effect of motion would be relative to each other such that stuff he says might be true. I told him I'd check with my physics friends, and here we are. Personally, I suspect the fact that one twin experiences additional acceleration and momentum (the faster twin) is the contributing factor to the time dilation. One twin experienced something sciencey the other did not, therefore there's a difference as yet to be explained by an expert. :) Can any of y'all spare a moment to explain it? Thanks! [/QUOTE]
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