Why is the time interval between the events in frame S larger than in frame S'?

AI Thread Summary
The discussion focuses on demonstrating that the time interval between two events in frame S is greater than in frame S' by a factor of gamma, using the equations of special relativity. The calculations show that while the events occur simultaneously in frame S' at the same spatial location, they do not remain simultaneous in frame S due to the effects of relative motion. The participants clarify the application of the equations and address potential misunderstandings regarding the terms used. Ultimately, the conclusion confirms that the time interval in frame S is indeed larger than in frame S'. This illustrates the core principle of time dilation in special relativity.
Benzoate
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Homework Statement



Two events happen at the same point x'(0) in frame S' at t(1)' and t(2)'

a) Use equations x=gamma*(x'+vt') and t=gamma*(t'+vx'/c^2) to show in frame S the time interval between the events is greater than t(2)'-t(1)' by a factor of gamma

Homework Equations





The Attempt at a Solution



x=gamma*(x'+vt')
t=gamma*(t'+vx'/c^2)

t(2)=gamma*(t(2)'-vx'(2)/c^2) and t(1)=gamma*(t(1)'-vx'(1)/c^2)
x'(2)=x'(1)=x'(0)
t(2)-t(1)= gamma*(t'(2)-t'(1))-gamma*v/c^2(-v*x'(0)+v*x'(0))
t(2)-t(1)=gamma*(t(2)'-t'(1))

from the reference frame of S' the two events that were at the same reference point in the S prame with not be at the same reference point in the S' frame. hence, x'(1) will not equal x'(2)

t'(2)= gamma*(t(2)-v*x(2)/c^2)
t'(1)=gamma*(t(1)-v*x(2)/c^2)
t'(2)-t'(1)=gamma*(t(2)-t(1))-gamma*v/(c^2)*(x(2)-x(1))

hence , t(2)-t(1) is large than t'(2)-t'(1)
 
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Benzoate said:

Homework Statement



Two events happen at the same point x'(0) in frame S' at t(1)' and t(2)'

a) Use equations x=gamma*(x'+vt') and t=gamma*(t'+vx'/c^2) to show in frame S the time interval between the events is greater than t(2)'-t(1)' by a factor of gamma

Homework Equations





The Attempt at a Solution



x=gamma*(x'+vt')
t=gamma*(t'+vx'/c^2)

t(2)=gamma*(t(2)'-vx'(2)/c^2) and t(1)=gamma*(t(1)'-vx'(1)/c^2)

Shouldn't you be using +vx'(2)/c^2 etc...

x'(2)=x'(1)=x'(0)
t(2)-t(1)= gamma*(t'(2)-t'(1))-gamma*v/c^2(-v*x'(0)+v*x'(0))
t(2)-t(1)=gamma*(t(2)'-t'(1))

You've proven your result above. I don't understand the purpose of the part below.

from the reference frame of S' the two events that were at the same reference point in the S prame with not be at the same reference point in the S' frame. hence, x'(1) will not equal x'(2)

t'(2)= gamma*(t(2)-v*x(2)/c^2)
t'(1)=gamma*(t(1)-v*x(2)/c^2)
t'(2)-t'(1)=gamma*(t(2)-t(1))-gamma*v/(c^2)*(x(2)-x(1))

hence , t(2)-t(1) is large than t'(2)-t'(1)
 
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