Quote:
Originally Posted by NJ Brazen_3133
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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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.