On 25 January 2014 16:02, meekerdb <[email protected]> wrote: > On 1/24/2014 3:12 PM, LizR wrote: > > On 25 January 2014 11:59, meekerdb <[email protected]> wrote: > >> A warp in space that is bound together by its own gravitation is what is >> known as a black hole. >> > > Technically I believe there is still a mass inside it, > > No, it's massive, i.e. it warps space around it, but I don't think it > makes sense to say it has a mass inside it; it's a solution to Einstein's > equation without any T_u_v, i.e. a vacuum. > > however, even if it has been crushed to a point. It isn't a > "free-floating space warp" which is what Edgar was suggesting (I asked him, > to double check, and he affirmed it). If that was possible, then presumably > *any* space warp could become detached from its source > > A black hole crushes it's source into a singularity (in the classical > approximation). >
Yeeees. Are you saying something I didn't? The point is that *wasn't* what Edgar described, and it still isn't. > and "drift off into the aether" ... the Earth might leave a furrow in > space behind it as it orbits the Sun, into which dust and asteroids would > tumble... > > There *are* "free-floating space warps", of course, namely gravity > waves. But as far as I know, they don't appear to be a major contributor to > "dark matter". > > Gravity waves can't exactly be 'free floating' because they travel at the > speed of light and only interact gravitationally. > Why isn't travelling at the speed of light "free floating" ? How freely do you have to float, exactly? > So unless they are strong enough to close up on themselves and make a > black hole, they will radiate off to infinity. > > Yes, true, and? I was trying to find something that vaguely matched what Edgar described. Sorry but just nitpicking trivial points and more or less repeating what I said doesn't help. -- 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 [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/groups/opt_out.
