What is time??
- Thread starter Shadow1
- Start date
I am actually not sure exactly which type of clock is on the GPS satellites. There are several different atomic clocks. I believe that cesium 133 is most commonly used as the standard these days.
That does not really matter though because what they are looking at is the electron transition times not an atom's movement within a molecule.
That said, yes time is always a measurement of some kind of change.
So for you it's just twisting words without understanding? It is an original interpretation.
I do not cover a mistake. I bring to light a mistake.
It is some difference, right?
O.K. Then.
SR covers two separate aspects of time dilation.
One involves the relativity of inertial frames of reference. In those "thought" experiments, assuming two observers in separate inertial FoR could actually see each other's clocks (which they could not), they would both think the other guy's (or gal's) clock was running slow. That deals with the relativity of "perspective". How things look different from different frames of reference and how to reconcile those perceived differences. As well as the fact that neither of the two observers could know who was moving and who was standing still.
The other is a direct application of the Lorentz Transformations to an object and/or observer in motion. Generally at some significant percentage of the speed of light. In that case the object is length contracted in line with the direction of motion and clocks in motion run slower than they would when at rest. In the twin paradox the twin that travels ages slower or less than the twin that stayed home or remained at rest.
Experiments with clocks in planes and satellites, tend to support the Lorentz Transformation application to clocks in motion running slow. Length contraction at everyday scale is as of yet beyond our ability to test. We cannot move fast enough or measure accurately enough to test length contraction, at everyday scales.
Big Chiller
Registered Senior Member
Time in general is about relative movement.
Correct. Though while movement is change I still rather use the following to describe it,
Think of time, as all about a measurement of change.
Generally the electron energy state of the involved atoms.
It is hard to visualize in this example. That is why I rather just say change, than movement.
Yep. Agreed.
OnlyMe,
This is the last attempt to make you understand.
We have two clocks that are moving relative to each of the other, clock 1 and clock 2.
You affirm that to synchronize the two clocks should be applied the Lorentz transformation to the clock 1.
I affirm that to synchronize the two clocks should be applied the Lorentz transformation to the clock 2.
If you can not draw a conclusion from this situation then I do not have anything to add.
This is the last attempt to make you understand.
We have two clocks that are moving relative to each of the other, clock 1 and clock 2.
You affirm that to synchronize the two clocks should be applied the Lorentz transformation to the clock 1.
I affirm that to synchronize the two clocks should be applied the Lorentz transformation to the clock 2.
If you can not draw a conclusion from this situation then I do not have anything to add.
Big Chiller
Registered Senior Member
I am really not interested in another discussion of a time dilation thought experiment. If this is something you are really interested in, suck someone else in or just run a search on past threads. I am sure you can fill a great deal of time exploring all the variations.
In the end the aspect of SR you are referring to comes down to a simple, comparison of perspective. What things "look" like from two different inertial frames of reference.
A clock responds to a force or energy .
When this clock is accelerated to a significant speed , this clock slows down . This is fact .
From this fact a conclusion is made that , at significant speed , time itself is slowing down to slow down the clock .
From this fact , a conclusion can also be made that , at significant speed , the applied force or energy to the clock is also changing accordingly to slowdown the clock .
When this clock is accelerated to a significant speed , this clock slows down . This is fact .
From this fact a conclusion is made that , at significant speed , time itself is slowing down to slow down the clock .
From this fact , a conclusion can also be made that , at significant speed , the applied force or energy to the clock is also changing accordingly to slowdown the clock .
Unless some additional/external force or energy is applied , the clock will remain uniform .
Doesn't "explain" your earlier comment.
To accelerate the clock thrust is applied.
For example , consider two identical clocks . One clock is kept on the earth and the other clock is kept in the moon . These two clocks will show different time , because they are in different force-field or gravity .