I had asked this about 2 years ago - but for the life of me cannot find it. Please feel free to cancel this if you can find my OP. Anyhow my question was this: A "train" passes by at significant relativistic speed, along the "x" axis. "Platform" observer peers in windows of train as it passes, only watching the particular clock which is aligned with the observer as it is passing at the same "x" coordinate. The picture seen by the observer is akin to a film of a clock but each moment is actually a different clock from the train. My recollection is the answer I got was that to the observer, the impression of the clocks would be that time passes *faster* by the lorentz factor for the speed. Can someone confirm?