Grimble

2009-Aug-28, 12:45 PM

*** to the moderators ***

I am having troble enetring a title here! It will allow me three letters but as soon as I add a fourth - e it goes walk-about and leaves me with a blank screen. The title I was trying to pu was 'Time dilation formula?' but if you could help me to start this thread I would be happy with whatever title you chose to give it. Thank you.

********************

I know that this is a very basic question but what is the correct formula for time dilation?

In Wikipedia etc. I read t' = (gamma)t or at least (delta)t' = (gamma) x (delta)t; yet in this mathematical description (http://en.wikipedia.org/wiki/Twin_paradox#Difference_in_elapsed_time_as_a_resul t_of_differences_in_twins.27_spacetime_paths) 'phase 2' and 'phase 5' imply that the formula is t' = t/(gamma).

(sorry, but is there a guide anywhere concerning how to write special characters on these pages?)

Also, if a moving clock is seen to 'go slow' by a stationary observer, then one would expect that less time would be seen to pass in the transformed time, and t' = t/(gamma) seems to me to fit that scenario.

I have been looking at this for some time on the internet but taking heed of the warnings I have been given about believing all I read on there I have followed the arguments and read the 'derivations' and suchlike, but have a problem:

Whichever way I approach it the formula appears to be the latter viz. t' = t/(gamma) in the same way that x' = x/(gamma) the formula for length contraction.

where:

t is the time on the stationary observer's local clock and

t' is the travelling clock's time, transformed by the lorentz transformation formulae.

Or are there different formulae applied in different circumstances.

We talk of time dilation - expansion(?) yet also about the moving cock slowing (less time passing)?

:confused::confused::confused:

I am having troble enetring a title here! It will allow me three letters but as soon as I add a fourth - e it goes walk-about and leaves me with a blank screen. The title I was trying to pu was 'Time dilation formula?' but if you could help me to start this thread I would be happy with whatever title you chose to give it. Thank you.

********************

I know that this is a very basic question but what is the correct formula for time dilation?

In Wikipedia etc. I read t' = (gamma)t or at least (delta)t' = (gamma) x (delta)t; yet in this mathematical description (http://en.wikipedia.org/wiki/Twin_paradox#Difference_in_elapsed_time_as_a_resul t_of_differences_in_twins.27_spacetime_paths) 'phase 2' and 'phase 5' imply that the formula is t' = t/(gamma).

(sorry, but is there a guide anywhere concerning how to write special characters on these pages?)

Also, if a moving clock is seen to 'go slow' by a stationary observer, then one would expect that less time would be seen to pass in the transformed time, and t' = t/(gamma) seems to me to fit that scenario.

I have been looking at this for some time on the internet but taking heed of the warnings I have been given about believing all I read on there I have followed the arguments and read the 'derivations' and suchlike, but have a problem:

Whichever way I approach it the formula appears to be the latter viz. t' = t/(gamma) in the same way that x' = x/(gamma) the formula for length contraction.

where:

t is the time on the stationary observer's local clock and

t' is the travelling clock's time, transformed by the lorentz transformation formulae.

Or are there different formulae applied in different circumstances.

We talk of time dilation - expansion(?) yet also about the moving cock slowing (less time passing)?

:confused::confused::confused: