On Tue, Oct 1, 2019 at 9:43 AM Philip Thrift <[email protected]> wrote:
> *how did the extra matter come from?* Unlike the second law of thermodynamics which is based on logic and observation the first law is based on observation alone, every time we test it in a lab it seems to work, but it has never been tested at the very largest scale, that of the cosmos. To answer your question the extra matter comes from absolutely nothing and thus its true, Many Worlds violates the law of conservation of mass/energy. But Many Worlds is not unique in that regard; *ALL* modern cosmological theories violate the conservation of mass/energy, they MUST. Noether's Theorem says if things generally look about the same from one time period to another then matter/energy is conserved, but in our expanding accelerating universe things do *NOT* look the same from one eon to another so energy can't be completely conserved. Mass/energy is only approximately conserved and to the same extent that at the largest scale the universe looks approximately the same from one minute to the next. And Einstein told us in the early 1920s that if empty space contains a residual vacuum energy in the form of negative pressure (see below) it would cause the universe to expand, that is to say more empty space would be created which would contain more vacuum energy which would create more empty space etc. If vacuum energy exists and has a value of 10^-10 joules per cubic metre it would explain why our universe is expanding, One joule is only enough energy to light up a one watt lightbulb for one second so that's a very low energy density, but there is a lot of empty space and it would be enough to get the job done. Note: The vacuum energy density is constant because there is nothing around that would cause it to change. And the pressure is negative because if you had a cylinder of vacuum in your lab and you pulled out a piston containing it that would create more vacuum and thus more resulting vacuum energy would be created, and that energy must have come from the cylinder. So if the vacuum wants to pull the piston in your lab back into the cylinder then the pressure must be negative. John K Clark -- 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 view this discussion on the web visit https://groups.google.com/d/msgid/everything-list/CAJPayv1zJ8-nYrGaaa5AO%3D0UQRKwki_jb536x54ScEz6x4jtiA%40mail.gmail.com.
