You folks are speaking of Verlinde's new theory of gravity. For me, my mind jumps to astrophysicist, and sci fi writer, Alastair Reynold's, faux technology for the far future, where humans control micro black holes, as a magical means to create 1 G gravity on very low gravity planetoids. It's a device Reynold's called a "swallower." In the variability of light speed, thinkably, could be variable, as proposed by some physicists that is (unrelated?) to the gravity theory and general relativity.
-----Original Message----- From: Russell Standish <li...@hpcoders.com.au> To: everything-list <everything-list@googlegroups.com> Sent: Thu, Dec 1, 2016 8:01 pm Subject: Re: No gravity / no dark matter On Fri, Dec 02, 2016 at 10:02:49AM +1100, Bruce Kellett wrote: > On 2/12/2016 9:26 am, Russell Standish wrote: > >On Thu, Dec 01, 2016 at 04:26:25PM +0100, Bruno Marchal wrote: > >>I am not sure why he says that Einstein was wrong, as I am not sure > >>Einstein ever asserted that space-time or gravity was fundamental. > >>To say that Einstein is wrong looks like a cliché in fashion, today. > >It's code speak for saying the speed of light is not a constant. It's > >more a bone to throw to the media to stir up interest, than a real > >scientific statement. > > > >Of course, since the speed of light is just a conversion constant > >beween our time units and our space units, we are always free to vary > >the speed of light. It is just a nonlinear reparameterisation of our > >coordinates. Verlinde's proposal is much, much more than that. > > It is interesting that the speed of light can be regarded as nothing > more than a conversion constant only if special relativity is > strictly correct. If temporal variation in the speed of light is > discovered, say by finding that the fine structure constant changes > with time, then we would have to rethink the idea that c is just a > conversion constant. > Temporal variation of alpha is a completely different beast, as it is a dimensionless quantity, and far more interesting, of course. Cheers -- ---------------------------------------------------------------------------- Dr Russell Standish Phone 0425 253119 (mobile) Principal, High Performance Coders Visiting Senior Research Fellow hpco...@hpcoders.com.au Economics, Kingston University http://www.hpcoders.com.au ---------------------------------------------------------------------------- -- 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 https://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/d/optout. -- 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 https://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/d/optout.
