4 ms·
So, when time is different for different entities under different conditions, then time is another part of universe, rather than just a mathematical convenience
by kumarvvr 4y ago
So, when time is different for different entities under different conditions, then time is another part of universe, rather than just a mathematical convenience of a human perception.
In the thought experiment, in two frames of references moving at different speeds but close to speed of light, how do molecules, cells and enzymes know how fast to age?
- tsimionescu 4y agoEverything has its own frame of reference. Everything is stationary relative to itself, so everything's "clock" is perfectly synchronized with everything else's, relative to themselves. "Time dilation" only comes into play when comparing the clocks of two different things moving at different speeds or accelerations relative to each other, or existing in two different gravitational fields (which is equivalent).
- TechBro8615 4y agoIf you were a few thousand kilometers tall, would the cells in your feet age at a different rate than those in your head?
- tsimionescu 4y agoIf you're on Earth or in general near a strong gravitational field, yes, because your feet experience a different acceleration than your head (marginally, we're probably talking like a second every decade or less - atomic clocks on GPS satellites at 20k km from the surface run faster than atomic clocks on the surface by ~40microseconds/day, so that would accumulate to ~3.5s/decade). If you're floating around in the void, no, everything is stationary relative to each other, and experiencing the same acceleration, so no real difference. There would still be some small difference between the cells closer to your center of mass than the ones farther away, because you also have your own gravitational field, but it would be so weak it would almost not matter at all.