I looked up Twin Paradox, and I understand the concept of time in SR, and also understand the Einstein synchronization convention concept, but now there is just something I don't get here:(adsbygoogle = window.adsbygoogle || []).push({});

I looked at twin paradoxes and apparently you must use the Lorentz factor (or it's inverse, anyway) to figure out the time a specific journey would take on the earth rest frame (or along the lines. Can't put it in words.)

So, the only thing is, what does each letter stand for in :

[tex]\displaystyle\epsilon=\sqrt{1-v^2/c^2}[/tex]?

Which I believe is the inverse of the lorentz factor.

Thanks in advance,

Santural : Below the average layman.

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# Lorentz Factor - Help!

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