RE: Speed of light not constant = young universe
June 21, 2014 at 9:11 pm
(This post was last modified: June 21, 2014 at 9:13 pm by Heywood.)
(June 21, 2014 at 8:52 pm)Jenny A Wrote: Reminds me of a discussion in metaphysics class beginning the the premise that space was stretched out in one direction causing objects and space the lengthen as you turned into the stretched direction. Once someone proposed light and sound and other things would travel proportionally faster in the elongated direction we gave it up as an untestable, and ultimately unimportant idea. No difference could be demonstrated even it it were true.
In your metaphysics class light would only travel proportionally faster in the elongated direction if the permittivity and permeability of space in that elongated direction also changed proportionally. You think of light as a constant. It is not. In actuality what appears to be constant speed of light are actually the product of constant factors.....factors which determine the speed of light.....those factors are the permittivity and permeability of space.
Elongate space but keep the permittivity and permeability of space constant and see what happens in your thought experiment.
