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Old 01-19-2017, 08:52 PM
 
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If you accelerate to light speed and beyond slows down time for traveler, then will deceleration do anything?

simple enough question.

Will the deceleration from luminal or superluminal speed up time for traveler to the point you are now equal to the place you left?
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Old 01-20-2017, 01:39 PM
 
Location: El Paso, TX
32,998 posts, read 26,229,830 times
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Quote:
Originally Posted by NJ Brazen_3133 View Post
If you accelerate to light speed and beyond slows down time for traveler, then will deceleration do anything?

simple enough question.

Will the deceleration from luminal or superluminal speed up time for traveler to the point you are now equal to the place you left?
Well, there is no accelerating beyond the speed of light. The speed of light in a vacuum seems to be the speed limit which cannot be exceeded by an object within space, although space itself apparently can expand at speeds greater than that of light.

My understanding is that it's not acceleration, but just the fact of being in motion that causes time dilation. Of course, as speed increases so does the degree of time dilation. And the opposite is true as well. But if upon reaching a certain speed that speed is maintained at a constant rate, the degree of time dilation relative to something moving slower or that is at rest remains. The astronauts on the ISS are moving at a constant speed as they orbit the earth and time moves more slowly for them than it does for a ground based observer on the earth.

The fact is that time is relative. Any motion at all causes both time and space to warp. Time moves more slowly for a person when he walks than when he is standing still. But the change is so small that it can't be noticed. The greater the speed, the greater the effect of time dilation.

You might find this article interesting.

Special Theory of Relativity - Special and General Relativity - The Physics of the Universe
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Old 01-20-2017, 08:56 PM
 
Location: UK
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I think we have to acknowledge that if we believe in any of these stories of unidentified craft then it is likely that this speed-of-light-limitation is NOT a limitation at all. Unless of course they come from our own world and not another.

There is evidence in unexplained phenomena that science is far more than we realise at the moment (multi dimensions, time, etc) and so the laws by which we operate now cannot apply, they MUST be only temporary until we have worked out the next step in the way the Universe works.

Last edited by ocpaul20; 01-20-2017 at 09:38 PM..
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Old 01-23-2017, 03:04 PM
 
Location: Formerly New England now Texas!
1,708 posts, read 1,091,960 times
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Quote:
Originally Posted by NJ Brazen_3133 View Post
If you accelerate to light speed and beyond slows down time for traveler, then will deceleration do anything?

simple enough question.

Will the deceleration from luminal or superluminal speed up time for traveler to the point you are now equal to the place you left?
The speed of light is set by the speed of causality. The wave of light can't experience time as if it did, it's mass would be infinite. It's mass is represented as angular momentum, which may interact with gravity. The speed of causality is determined by Planck time and Planck length.

https://en.wikipedia.org/wiki/Planck_time

"In physics, the Planck time (tP) is the unit of time in the system of natural units known as Planck units. It is the time required for light to travel, in a vacuum, a distance of 1 Planck length, approximately 5.39 × 10-44 s.[1] The unit is named after Max Planck, who was the first to propose it."

The speed of causality is a feature of our universe, it likely can't be broken by any particle, wave or field.

Light has energy, and thus has mass, however it's relativistic mass is zero, it's mass is conserved in angular momentum. This as the e equals mc squared we are taught is a shorthand for a larger expression which better explains things like light and fields.

Last edited by functionofx; 01-23-2017 at 04:21 PM..
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