Recent content by Jack Bauer

Time does not exist like some Aristotelian Form but is valid as a method of organizing events -- A happened "before" B but "after" C, etc. In the same way Left and Right do not exist in some independent sense but are valid decriptors of spatial location relative to a two-handed observer...

I think the best way to test it might be astronomical observations. If a planet or star's motion was shown to be affected by a change in another heavenly body's motion faster than could be explained by the "force" of gravity traveling between the two at the speed of light, the result would be...

I know there are 4-tesla magnets used for MRI at several academic centers. Would those be strong enough? But here is a different way: observe the changes in the paths of orbiting moons of Mars as one gets near the other. But then again, is gravity is only a deformation of space-time, it is...

Would there be anything to considering a string theory in which the strings, instead of having finite lengths, extended indefinitely in space? Like a fine meshwork. Possibly two or three sets of intersecting strings.

Could we somehow develope a neutrino telephone? Since they pass through everything, you wouldn't have to deal with obstructions like buildings which are often an issue with cell phones.

The Higgs boson was proposed to provide a mechanism for mass and is posited, as a field, to extend throughout the Universe. But this was before we started thinking the neutrino, which is also (almost) omnipresent, must have a mass. Could the neutrino substitute for the Higgs in this role?

Marcus, thanks for the links. I just read the whole article -- really helpful. Some things occurred to me. If some objects are "receding" from us faster than the speed of light because of expansion of space, could this be a way of traveling faster than light? If we could somehow cause such...

expressing the relation in terms of the radius doesn't say anything new, since the relation of d=2r is already known. Why not keep it as simple as possible?

Thanks, yes I would like the URL for that article, if you get a chance.

Would it be possible by comparison of expansion rates and directions at various points to back-extrapolate the location of the original Big Bang? Certainly in a local part of the universe, everything is expanding away from everything else with rates and directions as if the whole expansion were...

Not sure where to post this but I am puzzled by what seems to be a paradox concerning "wraparound" in 3-sphere universe and the expansion of the universe. If we could see to the edge of the universe and saw the opposite side because of "wraparound", would we see a red or a blue shift? Looking...