RE: No perfect circles in space...
July 21, 2018 at 11:23 pm
(This post was last modified: July 21, 2018 at 11:24 pm by Jehanne.)
As I said, a geodesic is a "path"; it can, of course, be a circle. It does not have to be, and I did not intend to imply such.
P.S. An "arc" can be a straight line, just with zero curvature.
P.S. An "arc" can be a straight line, just with zero curvature.