I don't have the words be explain it myself, but I will ask, do either of these help?
Yes, they're both pretty good, if not a little too simplistic. The moving detector could be two examples of the same event from two perspectives, yes? Rather than two events that last for different lengths of time?
Thank you sir for explaining that so eloquently. Ps why the "eye of Ra" in yer sig?
Talking about the " eye of Ra ", here is a video that is a mix of physics and religion. Although, this " PART ( 4 ) " is mostly about the simplest derivation of the Lorentz Fitzgerald Contraction Equation, the Time Dilation Equation, and the Lorentz Transformation Equations.