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Time Paradox 4 Years, 5 Months ago
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Hi,
Been a couple years that I posted. I've since graduated with a bachelor's and now working full time. Not much time to eat up Kant's paragraph-long sentences describing a world we cannot see, or digest Leibniz' anachronistic vision of a (multiple) quantum universe with his Identity of indiscernibles. Nor do I wish to bring up the age-old debate "Hey, what if you went back in time and killed your grandfather?"
But there still remains a question that peaks my curiosity. Back in the day, I asked my professor, who instructed a course entitled The Philosophy of Space and Time. His answer was that I follow up during his office hours. Which I never did because I was simply too lazy.
Anyways, the question revolves around the premise that Time as we know it slows down the faster any object approaches the absolute velocity of light until Time itself just stops. Maybe there is something I am missing (most probably), but doesn't that mean Light freezes Time wherever it travels? Wouldn't that imply a newly formed star estimated one billion light years away just started pulsing today?
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Salix
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Re: Time Paradox 4 Years, 5 Months ago
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Bah!
Time dilation is an effect due to the increased mass of the speeding particle.
The given formula is:
m' = m/(sqrt(1 - (v/c)^2))
(As far as I remember)
where m' = the extra mass
m = the initial mass
v = speed of the particle
c = speed of light
Now as you say, if the particle speed = v, then (v/c)^2 = 1, 1-1 = 0, and thus we have m/0, which is not allowed. The way to solve it is to say that the initial mass, m = 0. So particles that can travel at the speed of light have NO initial mass, and thus they wont cause time dilation effects.
I hope this is right. lol.
Peace.
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Re: Time Paradox 4 Years, 5 Months ago
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Time is experienced the same from the perspective of the earth and space traveler. Their differential velocities relative to the maximum speed of light causes the faster space traveler to age at a slower rate than the earth inhabitants. Before the space traveler reached the speed of light, he and his ship would increase in mass until they both imploded into a black hole. This is why anything with mass can never reach the speed of light. The photons of light travel at this maximum speed because they lack mass.
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Re: Time Paradox 4 Years, 5 Months ago
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Light is never in a pure vacuum anyway, it never travels at its maximum speed, which is just the theoretical limit... so uh, nanrek, what you said can't be right.
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The kind of philosophy one chooses depends upon what kind of person one is. ~ J.G. Fichte
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Salix
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Re: Time Paradox 4 Years, 5 Months ago
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The theoretical limit is when an infinite amount of energy would be required to accelerate an object because the object has obtained an infinite mass...
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Re: Time Paradox 4 Years, 5 Months ago
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[quote1197565601=Salix]
The theoretical limit is when an infinite amount of energy would be required to accelerate an object because the object has obtained an infinite mass...
[/quote1197565601]
Right. that's for all objects except for photons, which don't have any mass.
But photons travelling through any medium are slowed down (however slightly)...
Even the interstellar medium (vast near-vacuum plasma) slows light down a little bit.
In fact, there's nowhere in the universe that's a perfectly pure vacuum, so light never ACTUALLY travels at 299792458 metres per second, though often very very close....
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