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/sci/ - Science & Math

File: 150 KB, 1000x700, 1285906910870.jpg [View same] [iqdb] [saucenao] [google]

Anonymous Sat Feb 19 03:45:43 2011 No.2563913 [Reply] [Original]

how is this possible?

>>	Anonymous Sat Feb 19 03:46:43 2011 No.2563916 The traveling twin has to switch reference frames to come back.

>>	Anonymous Sat Feb 19 03:47:43 2011 No.2563919 File: 39 KB, 494x366, 1286033169311.gif [View same] [iqdb] [saucenao] [google]

>>	Anonymous Sat Feb 19 03:48:43 2011 No.2563921 >>2563913 yes, it becomes a non-inertial reference frame when the second twin accelerates (turns around) to return home. Therefore Einstein's law of Equivalence fails for this situation because it is a non-inertial reference frame.

>>	Anonymous Sat Feb 19 03:50:43 2011 No.2563924 http://en.wikipedia.org/wiki/Twin_paradox#Resolution_of_the_paradox_in_special_relativity

>>	Anonymous Sat Feb 19 03:51:43 2011 No.2563930 >>2563919 >1286033169311.gif mfw

>>	Anonymous Sat Feb 19 03:52:43 2011 No.2563933 File: 52 KB, 639x446, 1290373999023.gif [View same] [iqdb] [saucenao] [google] >>2563921 what if we just don't count the time when he accelerates? it can't take years to change your direction

Anonymous Sat Feb 19 03:52:43 2011 No.2563934

>>2563921
This. The two reference frames can never communicate with each other in such a way that they see each other as "youngest" at the same time. The turning around/slowing down takes general relativity to calculate.
Unless you had a portal gun. Instant transport between the two frames fucks shit up.

>>	Anonymous Sat Feb 19 03:54:43 2011 No.2563936 File: 135 KB, 1440x900, pressure.jpg [View same] [iqdb] [saucenao] [google] physics doesn't work

Anonymous Sat Feb 19 03:55:43 2011 No.2563942
File: 15 KB, 500x269, 500px-Twin_Paradox_Minkowski_Diagram.svg.png [View same] [iqdb] [saucenao] [google]

>>2563934
>The turning around/slowing down takes general relativity to calculate.
Only if it is not instantaneous. That's the approximation used in the paradox, usually, just because it's simpler.

>>2563933
"Now" is a relative thing for observers that are not at the same location. When the traveling twin turns around, so does his perceived "now" across space.

Pic related, from here:http://en.wikipedia.org/wiki/Twin_paradox#Resolution_of_the_paradox_in_special_relativity

Anonymous Sat Feb 19 03:56:43 2011 No.2563945

>>2563933
Because the second twin accelerates, it breaks down equivalence. Now the second twin will be much younger than the one on the other planet. Remember, not both are both young, just it is equivalent to view either one as younger than the other, until equivalence breaks down.

>>2563934
The portal gun would still destroy equivalence.

>>	Anonymous Sat Feb 19 03:57:43 2011 No.2563947 >>2563936 >approximations fail when you violate the assumptions SURPRISE!

>>	Anonymous Sat Feb 19 03:58:43 2011 No.2563951 File: 100 KB, 884x704, 1286697475511.png [View same] [iqdb] [saucenao] [google] >>2563947 problem?

>>	Anonymous Sat Feb 19 03:58:43 2011 No.2563952 >>2563934 "instant" transport would allow you to time-travel, since accelerating changes you reference frame, and hence, your subjective "now" across space.

>>	Anonymous Sat Feb 19 03:59:43 2011 No.2563953 File: 313 KB, 500x700, 1288209150594.png [View same] [iqdb] [saucenao] [google]

>>	Anonymous Sat Feb 19 04:02:43 2011 No.2563965 File: 30 KB, 897x248, 1285782021447.jpg [View same] [iqdb] [saucenao] [google]

>>	Anonymous Sat Feb 19 04:06:43 2011 No.2563979 File: 44 KB, 800x600, 1287161626639.png [View same] [iqdb] [saucenao] [google] magnets.

>>	Anonymous Sat Feb 19 04:29:43 2011 No.2564037 speaking of space travel. if you put a wind turbine, on the inside/outside of your rocket, then turned it wiht great force while in space. you get infinite energy.

>>	Anonymous Sat Feb 19 04:33:43 2011 No.2564053 File: 331 KB, 700x2259, df9c9bd955d0fb1a02746daa8d5a27f9.jpg [View same] [iqdb] [saucenao] [google]

>>	Anonymous Sat Feb 19 04:34:43 2011 No.2564061 File: 26 KB, 523x337, 1296387005479.jpg [View same] [iqdb] [saucenao] [google] Troll physics give me a hadron.

>>	Anonymous Sat Feb 19 04:35:43 2011 No.2564067 File: 64 KB, 909x598, 1285766303421.png [View same] [iqdb] [saucenao] [google]

>>	Anonymous Sat Feb 19 04:43:43 2011 No.2564098 File: 132 KB, 500x1200, 1291809168267.png [View same] [iqdb] [saucenao] [google]

>>	Anonymous Sat Feb 19 04:57:43 2011 No.2564152 >>2564067 i would point out all of the nonsense in that, but obviously the poster didnt author it, so it would be a complete waste of time.

>>	Anonymous Sat Feb 19 05:03:43 2011 No.2564175 >>2563913 That's not what happens, acceleration causes time to go slower.

>>	Anonymous Sat Feb 19 05:03:43 2011 No.2564176 File: 78 KB, 887x708, warp.jpg [View same] [iqdb] [saucenao] [google] >>2564098 I loll'd

>>	Anonymous Sat Feb 19 05:07:43 2011 No.2564179 >>2564175 ? First off, SR only applies to inertial reference frames. Second, slower for whom? I hope you're referring to the clock that is in motion relative to the inertial observer.

>>	Anonymous Sat Feb 19 05:15:43 2011 No.2564204 File: 113 KB, 671x614, 1295185500774.jpg [View same] [iqdb] [saucenao] [google]

>>	deleted Sat Feb 19 06:09:43 2011 No.2564365 >>2564037 whatabout no?

>>	Anonymous Sat Feb 19 06:13:43 2011 No.2564373 File: 45 KB, 600x600, 1288093754853.png [View same] [iqdb] [saucenao] [google] u jelly?

>>	Anonymous Sat Feb 19 06:14:43 2011 No.2564374 File: 206 KB, 822x772, radiohead.png [View same] [iqdb] [saucenao] [google] OC

>>	Anonymous Sat Feb 19 06:25:43 2011 No.2564390 >>2564373 Hahahaha! This one is full of win

>>	Anonymous Sat Feb 19 06:33:43 2011 No.2564406 File: 68 KB, 720x613, trolol.jpg [View same] [iqdb] [saucenao] [google]

>>	Anonymous Sat Feb 19 06:49:43 2011 No.2564443 File: 74 KB, 768x614, 2e87006c11fd0713d1b5eedc970b9cde.jpg [View same] [iqdb] [saucenao] [google]

>>	Anonymous Sat Feb 19 06:49:43 2011 No.2564444 >>2564374 i lol'd

>>	Anonymous Sat Feb 19 07:55:43 2011 No.2564598 File: 62 KB, 720x495, 21c427071e2faca1e1ad3d6d43cde4a2.jpg [View same] [iqdb] [saucenao] [google]

>>	Anonymous Sat Feb 19 08:03:43 2011 No.2564611 >>2564373 I dont get it

>>	Anonymous Sat Feb 19 08:09:43 2011 No.2564629 File: 88 KB, 1024x768, 1285785551706.jpg [View same] [iqdb] [saucenao] [google] >>2564611 trollface has won then

>>	Anonymous Sat Feb 19 08:17:43 2011 No.2564638 >>2564611 http://nobelprize.org/nobel_prizes/physics/laureates/2010/

>>	Anonymous Sat Feb 19 09:28:43 2011 No.2564749 File: 15 KB, 499x326, 1285770713373.jpg [View same] [iqdb] [saucenao] [google]

>>	Anonymous Sat Feb 19 13:36:43 2011 No.2565642 File: 68 KB, 864x618, 1287155256504.jpg [View same] [iqdb] [saucenao] [google]

>>	Anonymous Sat Feb 19 13:38:43 2011 No.2565648 File: 25 KB, 292x300, 1298053987988.jpg [View same] [iqdb] [saucenao] [google] >>2564629

>>	Anonymous Sat Feb 19 13:39:43 2011 No.2565656 File: 94 KB, 750x600, 1297571770744.jpg [View same] [iqdb] [saucenao] [google] >>2565642 THIS IS FUCKING BRILLIANT WHY DONT WE DO IT? trash burns up in atmosphere or floats around space forever.

>>	Anonymous Sat Feb 19 14:35:43 2011 No.2565915 File: 50 KB, 500x500, 8f3e47f1ab3292b1172c211435ac37f5.jpg [View same] [iqdb] [saucenao] [google] u jelly

>>	Anonymous Sat Feb 19 14:46:43 2011 No.2565972 >>2563913 from a purely biological perspective, the rate your organism deteriorates due to age remains similar in reference to local time, so both twins always stay the same age. Gravity effects notwithstanding, of course.

>>	Anonymous Sat Feb 19 15:06:43 2011 No.2566063 File: 341 KB, 825x1847, 1298137012499.jpg [View same] [iqdb] [saucenao] [google]

>>	Anonymous Sat Feb 19 15:10:43 2011 No.2566072 >>2566063 >star wars >future clever troll is clever

>>	Anonymous Sat Feb 19 15:10:43 2011 No.2566073 >>2566063 >implying the Death Star is in the future

>>	Anonymous Sat Feb 19 15:18:43 2011 No.2566109 >>2566063 >implying the pyramids are in the past

>>	Anonymous Sat Feb 19 15:21:43 2011 No.2566114 >>2566109 They are in the past. The fact that they come from the future and are traveling backward in time is something we didn't know until Dan Simmons discovered it.

>>	Anonymous Sat Feb 19 15:22:43 2011 No.2566115 >>2566073 >Implying it's not If we consider that Star Wars happened in this universe, the narrator can be in a point so far into the future that the point that Star Wars happened was a long, long time ago, while still being the future for us.

>>	Anonymous Sat Feb 19 15:27:43 2011 No.2566136 >>2566115 What narrator?

>>	Anonymous Sat Feb 19 15:29:43 2011 No.2566149 >>2566063 > A long time ago in a galaxy far, far away

>>	Anonymous Sat Feb 19 15:33:43 2011 No.2566160 File: 9 KB, 236x214, images.jpg [View same] [iqdb] [saucenao] [google] >>2566073 >>2566149

>>	Anonymous Sat Feb 19 15:34:43 2011 No.2566164 File: 131 KB, 600x1050, trollgravity.png [View same] [iqdb] [saucenao] [google]

>>	Anonymous Sat Feb 19 15:35:43 2011 No.2566174 >>2566063 perhaps this post is saying that star wars is the past (a long time ago in a galaxy far away), while the pyramids are from the future (perhaps sometime in the future the aliens will return and re-teach us how the pyramids were made)

>>	Anonymous Sat Feb 19 15:36:43 2011 No.2566181 >>2566149 naboo was under an attack...

>>	Anonymous Sat Feb 19 15:37:43 2011 No.2566186 File: 102 KB, 676x600, 1287410143121.png [View same] [iqdb] [saucenao] [google]

>>	Anonymous Sat Feb 19 15:38:43 2011 No.2566191 File: 87 KB, 640x480, 1298049485305.png [View same] [iqdb] [saucenao] [google]

>>	Anonymous Sat Feb 19 15:40:43 2011 No.2566209 >>2566181 and I thought me and Qui-gon-jin could talk the federation in... to maybe cutting them a little slack

>>	Anonymous Sat Feb 19 15:46:43 2011 No.2566230 >>2566191 if you believe that i have a box i'd like to sell you.

>>	Anonymous Sat Feb 19 15:55:43 2011 No.2566275 >>2566191 Holy shit my mind is completely fucked now. Tell me why it doesn't work.

>>	TRIPFAG !TRIpcODEmE Sat Feb 19 15:58:43 2011 No.2566291 File: 95 KB, 397x295, 1296345791761.jpg [View same] [iqdb] [saucenao] [google] >>2566230

>>	Anonymous Sat Feb 19 15:59:43 2011 No.2566294 >>2566275 Calculate the net amount for each person. The second person has -$10 total.

>>	Anonymous Sat Feb 19 16:00:43 2011 No.2566300 >>2564374 Jokes on you, tKoL is a great album

>>	Anonymous Sat Feb 19 16:00:43 2011 No.2566304 >>2566275 You, the buyer, put $20 in the box, then paid $30 to the other guy. Then you got the $40 from the box. Do the math.

>>	Anonymous Sat Feb 19 16:01:43 2011 No.2566306 >>2566275 the second person loses 20 dollars when he puts the money in the box, then loses another 30 dollars when purchasing the box. He only gains back the $40 dollars in the box, leading to a net loss of $10

>>	Anonymous Sat Feb 19 20:08:43 2011 No.2567943 File: 192 KB, 584x439, 1297572204778.png [View same] [iqdb] [saucenao] [google]

>>	Anonymous Sat Feb 19 20:32:43 2011 No.2568108 File: 50 KB, 720x486, 1297572918108.jpg [View same] [iqdb] [saucenao] [google]

>>	Anonymous Sat Feb 19 22:19:43 2011 No.2568727 Let's not let this thread die.

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