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Thread: Whats the time dilation of objects travelling at (99.999rec%)c?

  1. #1 Whats the time dilation of objects travelling at (99.999rec%)c? 
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    Whats the time dilation of objects travelling at (99.999rec%)c?

    According to wiki,
    after 6 months on the ISS, the astronaut crew has indeed aged less than those on Earth, but only by about 0.007 seconds
    263520.000seconds passed on earth, and 263520.007seconds passed on the ISS.
    which makes the time passing in the ISS 0.000002656% slower.
    However, the ISS is travelling only a split of a tiny fraction of the speed of light. so the time slowing is little, at 0.000002656%.

    Just supposedly, the ISS is travelling at 99.999rec% at the speed of light compared to earth.
    What is the % slower time passes compared to earth?


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    Forum Freshman WaterWalker's Avatar
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    Hi ryanawe123

    I think this should be easy to deduce. Since you are using the same object, and only require a percentage outcome, I think that simple comparasons will suffice. So...

    percentage/time = percentage/time

    But at that percentage of the speed of light, time would almost stand still for the affected person/s


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    Forum Freshman WaterWalker's Avatar
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    Please mind my spelling. I'm not so good with the english language.
    "No army is stronger than an idea whose time has come." - Victor Hugo

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    Brassica oleracea Strange's Avatar
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    Quote Originally Posted by ryanawe123 View Post
    Whats the time dilation of objects travelling at (99.999rec%)c?

    According to wiki,
    after 6 months on the ISS, the astronaut crew has indeed aged less than those on Earth, but only by about 0.007 seconds
    263520.000seconds passed on earth, and 263520.007seconds passed on the ISS.
    which makes the time passing in the ISS 0.000002656% slower.
    However, the ISS is travelling only a split of a tiny fraction of the speed of light. so the time slowing is little, at 0.000002656%.

    Just supposedly, the ISS is travelling at 99.999rec% at the speed of light compared to earth.
    What is the % slower time passes compared to earth?
    For time dilation due to velocity, the equation is:


    But in the case of the ISS, the difference in gravity is probably a more significant factor. But this requires much more complicated math to work out...
    ei incumbit probatio qui dicit, non qui negat
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    Quagma SpeedFreek's Avatar
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    Quote Originally Posted by ryanawe123 View Post
    Whats the time dilation of objects travelling at (99.999rec%)c?
    99.999rec% of c? Recurring? As in 0.999...c ?

    This is an impossible speed, for as 0.999.... = 1 then 0.999...c = c.

    So you are asking what the time dilation is for objects travelling at the speed of light.
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    Brassica oleracea Strange's Avatar
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    Quote Originally Posted by SpeedFreek View Post
    99.999rec% of c? Recurring? As in 0.999...c ?
    Didn't spot that!

    This is an impossible speed, for as 0.999.... = 1
    Noooooo! Don't start that thread here...
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