I Do we know how many meters long one second is?

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Do we know how many meters long one second is?
In other words, how many meters long is the world line of a particle at rest for 1 second?
 
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student34 said:
Summary:: Do we know how many meters long one second is?

In other words, how many meters long is the world line of a particle at rest for 1 second?
The conversion factor from time to length is the speed of light. For an object at rest in some IRF for proper/coordinate time ##t##, the worldline has length ##ct##.

If ##t = 1s##, then the length of the worldline is approximately ##3 \times 10^{8} \ m##.
 
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I guess this means that we pass through time at the speed of light. Interesting.
 
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student34 said:
I guess this means that we pass through time at the speed of light.
While there is a sense in which this is true, it is a very limited sense and you can't really draw any useful inferences from it. We have had a number of previous PF threads dealing with the confusion caused by taking this statement too far.
 
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