Quote:
|
Originally Posted by upriver
"In a paper published in 1918 Einstein corrected the “relative motion” error of his 1905 paper and he added “forces” and “atomic clocks” to his thought experiments. He changed the reason for the single clock slow-down from “relative motion” to “forces” exerted on the oscillating atoms in the single atomic clock that slowed down, and thus he basically returned to Lorentz’s basic electrodynamics concept of 1895, and Einstein's own 1911 gravitational redshift theory."
So time dilation is a is not reality, but clocks slowing down is.
So there is no such thing as time dilation.
|
It’s not quite that simple. There is no “time dilation” caused by “relative motion” alone, so the 1905 SR theory is wrong about that. Get yourself a copy of Einstein’s 1918 paper and see what he says about it.
However, atomic clocks (and perhaps other atomic processes too) can slow down if, for example, the atoms of the clock are near the surface of a massive planet or star and if their internal harmonic oscillation rates slow down. However, the old fable that you will live longer at sea level and you will age faster on a mountain top (because your atoms are oscillating more rapidly on the mountain top) is wrong. An atomic clock will “tick” more rapidly on a mountain top, but it’s such a slight amount that the atomic oscillation rate change has nothing to do with our aging rates. Our human aging rates are determined more by our body and cell temperatures (which control thermodynamic time) than by any very slight slowdown or speed up in our atomic oscillation rates when we move from sea level to a mountain top.
Also, different types of clocks slow down and speed up at different rates, depending on which laws of physics are governing the tick rates of the clocks. For example, an atomic clock will “tick” faster on a mountain top, while a pendulum clock will tick slower on a mountain top. An atomic clock will “tick” slower at sea level, while a pendulum clock will tick faster at sea level.
Frozen human embryos can be kept from aging for many years, 5, 10, etc, and then they can be thawed out and the embryo will grow into a baby. This is an example of thermodynamic time that is not related to atomic time. You can have two twin frozen embryos, and thaw one out now, and thaw the other out 10 years from now, and you will have one twin being 10 years older than the other. One will be in the 4th grade while the other is still a baby. This is thermodynamic time. It’s actually performed by doctors every day, although they usually thaw out only one embryo of each group they collect.