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Reletivity seems to revert it to r^-2
Posted: Tue Sep 22, 2015 7:44 pm
by AlternateGravity
I noticed that if I set the force law to r^-1 or r^-3 and then turn on relativity it produces nearly elliptical orbits even though without relativity it's only r^-2 that produces elliptical orbits.
Re: Reletivity seems to revert it to r^-2
Posted: Tue Sep 29, 2015 2:40 pm
by testtubegames
The problem here is on my end -- not in the simulation but rather in a really confusingly-designed interface.
When you turn on relativity, it calculates with one concrete set of relativistic equations. It ignores whatever you've typed in the f(r) spot. So, no matter what is in f(r), the moment relativity is turned on, you'll see a world that is nearly r^-2 (since, after all, general relativity reduces to that for small masses or far distances).
I'll add that to the 'to change' list.