Hello Forum,(adsbygoogle = window.adsbygoogle || []).push({});

An event is a point in spacetime with spatial coordinates and a time coordinate: (x,y,z,t). An event does not have a duration since it only lasts for an instant t. We can talk about time duration to mean the temporal separation between two different events, correct?

In the time dilation phenomenon of special relativity, one inertial observer see the time interval separating two events in another inertial frame of reference to be stretched (and vice versa since time delation is symmetric). Is the time interval called "proper time" the amount of time measured by the observer that is stationary with respect to the two events? What does it mean that an observer is stationary with respect to the two events? Events don't move or do they?

How does the moving observer manage to remotely measure the time dilation that occurs in the other reference frame which appears to be moving relative to his? Does it use light signals?

thanks,

fog37

**Physics Forums | Science Articles, Homework Help, Discussion**

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Time dilation measurement and events

Loading...

**Physics Forums | Science Articles, Homework Help, Discussion**