Jay Lake (jaylake) wrote,
Jay Lake
jaylake

[help] Relativistic time

I’m working on the (new) Sekrit Projekt here, and I’ve realized I need some info I don’t have in my brain and am not successfully Googling up.

Is there a set of (simplified) equations that can be used to establish the differential between ship-time and observer-time for a relativistic transit at interstellar distances? I’d love a calculator applet or spreadsheet that would let me set distance in lightyears and ship speed as a fraction of c, thereby showing the two separate values for elapsed time. (And I know that this stupid-simple example ignores acceleration/deceleration time, but you get the idea.)

Or am I asking too much here? Comments, Web links, Excel files and whatnot welcome.

Originally published at jlake.com. You can comment here or there.

Tags: help, science, writing
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