On 15 February 2014 09:44, John Clark <johnkcl...@gmail.com> wrote: > On Thu, Feb 13, 2014 at 8:39 PM, Edgar L. Owen <edgaro...@att.net> wrote: > > > The accelerating elevator is in deep space. There are no tidal forces. >> > > You can tell if spacetime is curved or not by observing if light moves in > a straight line or not. If you were in deep space and the elevator was > accelerating at 1g due to a attached rocket and you turned on a laser > pointer that was aimed parallel to the floor you would notice that the > light would not hit the spot directly across because by the time it took > the light beam to cross the elevator the elevator would be moving faster > upward than when the light beam started it's journey due to the > acceleration. Thus you would observe the light beam hit a spot slightly > below where it would have hit if the light moved in a straight line, so you > would conclude that spacetime inside the elevator was curved. > > I know this is bad forum form, but for once I will just post in order to say...
DAMN good point!!!! I'd completely forgotten that. Actually I'll round out my post with a quote (from memory, due to laziness) from Ian Dury's song "There ain't half been some clever bastards" Einstein couldn't be classed as witless He claimed atoms were the littlelest When they did a bit of splittin' em It scared everybody shitless. -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to everything-list+unsubscr...@googlegroups.com. To post to this group, send email to everything-list@googlegroups.com. Visit this group at http://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/groups/opt_out.
