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ye olde twin paradox - ozmoroid responds

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Uploaded by on Apr 19, 2009

I take a quick crack at "explaining" (ha!) the twin paradox of special relativity.

Relativity in the Global Positioning System link:

http://relativity.livingreviews.org/Articles/lrr-2003-1/

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Science & Technology

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Uploader Comments (ozmoroid)

  • Haven't you written your coordinate transformations incorrectly? Shouldn't the relativistic factor read gamma = ( 1 - beta^2 ) ^ (-1/2) , where beta = v/c ?

  • @quidproquo2004 I used the notation beta = 1/sqrt(1-(v/c)^2) which is what Einstein used in his original paper. Many texts use the notation you mention. I also chose units in which c=1.

Top Comments

  • ow!..... my brain.....it hurts!

  • and furthermore if it was ONLY the effect of motion then we should NOT expect to see the same effect when we instead simply use a gravity field. we should expect to see the effect only when moving.

    we see this effect with just a gravity field as well.

    it's not simply motion throwing off the clock.

    it is actual, factual, time dilation.

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All Comments (141)

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  • Wow I can't believe I understand this now! I watched your 5 relativity videos, then came back to this, and it all makes sense now!

  • @1zacster I thought he did. Anyway here's a basic equivalence way of looking at it:

    watch?v=8stc9OtTUOA

  • So, uh, when go they crash?

  • @kristijanadrian I don't get the twin paradox, pleae explain it to me

  • my brain hurts

  • uhhh.. Time..

    

  • Even though in a visual model the three events happen at different times and we suppose the subjects would nottice this, I think they would not. I think that instead of a paradox this is just a mental glitch in humans that we have a hard time compensating for. For instane if you had never seen the color purple, then were asked to think of a color you had never seen, you would not think of purple. I could be off on this but this is my first reaction to learning about this paradox.

  • I couldn't understand any of this because I couldn't tell which one was red and which one was green (I'm colorblind)

    :(

  • fascinating video!!!

  • @ozmoroid Yes, I see that now. Thanks for the well done and informative vid.

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