I ran across this page a while back. I was tempted to post this in one of the Twin Paradox pages, but I realized it doesn't quite fit in in those discussions, as it's more general than that. It's an attempt to graphically show all of the various forces at work when travelling at relativistic speeds.

http://www.fourmilab.ch/cship/cship.html

I found it interesting because it actually graphs the magnitude of the changes in time and space as your speed increases using real numbers. You can see how the effects are minimal at low velocities but increase dramatically at speeds approaching light.

Have fun. [img]/phpBB/images/smiles/icon_smile.gif[/img]

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...And that, my liege, is how we know the Earth to be banana-shaped. --Sir Bedevere