27 Jan 10
Originally posted by KellyJayTime is dependant of the gravitational field, and for the oberver in accelleration.
Is time a constant or does it change?
How do we know?
Kelly
How it's measured? By bringing an atomic clock to the site in question, and compare it with a stationary one.
Yes, we know, theoretically, and practically.
28 Jan 10
Does time change, does it alter its speed, course, volumn, however
you describe time, or does it remain the same and what we use to
measure it get altered by forces we apply to them? If you agree it
changes or disagree, how would you know your right after all? If what
we used to measure time can be affected by some stess or force it
would cause the same type of read out as if time itself changed?
Kelly
28 Jan 10
1 edit
Originally posted by KellyJayTime is dependant of the gravitational field, and for the observer in accelleration.
Does time change, does it alter its speed, course, volumn, however
you describe time, or does it remain the same and what we use to
measure it get altered by forces we apply to them? If you agree it
changes or disagree, how would you know your right after all? If what
we used to measure time can be affected by some stess or force it
would cause the same type of read out as if time itself changed?
Kelly
How it's measured? By bringing an atomic clock to the site in question, and compare it with a stationary one.
Yes, we know, theoretically, and practically.
28 Jan 10
Relative velocity changes the relative rate of time. A gravitational well changes this as well. This was first chosen theoretically, and then shown experimentally. If the experiments have been incorrect, then it would be one mighty coincidence that they concurred with theory so precisely.
28 Jan 10
Originally posted by KellyJayI think there are two types of 'constant'
Is time a constant or does it change?
How do we know?
Kelly
there are physical/mathematical constants such as e, pi, G
then there is the constancy of metrics
eg acceleartion is constant with regard to constant force
TIME is a metric.
So what are you asking it is constant with?
29 Jan 10
Time is relative. Time passes at the same rate for you, but time may change at a different rate for another person. I believe time slows down as you speed up.
Do a google on speed of light and time and I'm sure you'll find several hits that will go into the paticulars.
29 Jan 10
Originally posted by KellyJayWhat do you think the theory of relativity is about?
Does time change, does it alter its speed, course, volumn, however
you describe time, or does it remain the same and what we use to
measure it get altered by forces we apply to them? If you agree it
changes or disagree, how would you know your right after all? If what
we used to measure time can be affected by some stess or force it
would cause the same type of read out as if time itself changed?
Kelly
Here's a hint. It answers your question.
29 Jan 10
Originally posted by wolfgang59Is it a constant or no, does it change? Like I said earlier we know we
I think there are two types of 'constant'
there are physical/mathematical constants such as e, pi, G
then there is the constancy of metrics
eg acceleartion is constant with regard to constant force
TIME is a metric.
So what are you asking it is constant with?
can alter devices we use to measure time with and claims that time
changes are due to putting some devices under stress of specific
forces resulting in the change of readings between two devices that at
one time held the same time. So why is it thought that the time and
not the device itself was altered, why do people think time itself
changes and not the items that go through specific stresses?
Kelly
29 Jan 10
Originally posted by EladarOur perceptions can be altered, we may view things differently for
Time is relative. Time passes at the same rate for you, but time may change at a different rate for another person. I believe time slows down as you speed up.
Do a google on speed of light and time and I'm sure you'll find several hits that will go into the paticulars.
several different reasons, time may appear to slow down while you are
in a crash, but that isn't because time has changed.
Kelly
29 Jan 10
Originally posted by KellyJayReasons why people think time is relative:
Is it a constant or no, does it change? Like I said earlier we know we
can alter devices we use to measure time with and claims that time
changes are due to putting some devices under stress of specific
forces resulting in the change of readings between two devices that at
one time held the same time. So why is it thought that the time and
not the devi ...[text shortened]... do people think time itself
changes and not the items that go through specific stresses?
Kelly
1.) The speed of light is independent of reference frame.
This has been confirmed many times over, both experimentally and theoretically. From this, we can show that the time that elapses for an observer at rest is not the same as the time that has elapsed on a space ship.
30 Jan 10
1 edit
Originally posted by amolv06Time differs or the different conditions caused either the observer, or
Reasons why people think time is relative:
1.) The speed of light is independent of reference frame.
This has been confirmed many times over, both experimentally and theoretically. From this, we can show that the time that elapses for an observer at rest is not the same as the time that has elapsed on a space ship.
devices being used to measure time to become altered? Can we say
that an exact point in time like "now" for example is the same
throughout all of the universe? If we were to freeze all of the universe
at a single point in time would it all stop at once, is there a now
everywhere at the same moment?
Kelly