On Tuesday, February 9, 2021 at 3:09:33 AM UTC-7 [email protected] wrote:
> On Mon, Feb 8, 2021 at 7:12 AM Alan Grayson <[email protected]> wrote: > > *> Consider a system with two possible states with probabilities 30% and >> 70% before measurement.* >> > > OK, then if there were 10 observers 3 would see X and 7 would see Y. > *I said BEFORE MEASUREMENT! AG* *Try this. For a test mass m, and a gravitating mass M at rest, calculate the PE from R = 0 to R = inf, and compare that to the rest mass of the gravitating mass. Do you get precisely zero? How do you handle the fact that the potential used in the calculation blows up at R = 0? AG* *Incidentally, the Wiki link you posted on the Zero Energy Universe says the theory remains unproven. AG* > > >> *> I would agree that the system is in both states simultaneously IF the >> probabilities were 100% for each.* >> > > Then everybody *would* see an interference pattern and everybody *would > not* see it interference pattern. Perhaps I'm mistaken but something > doesn't seem quite right here. > > *> Concerning the convention for PE, if one moves a test mass from R1 to >> R2 in a central gravity field, where R1 < R2, aren't we calculating the >> work done against the field? Yes or No?* >> > > Yes, an external force of some sort would be required for that to happen, > so that must be uphill. > > *> We can call this work negative or positive. Do you agree* >> > > Yes, you can call gravitational potential energy positive if you like, > but then to be consistent you'd have to call Kinetic energy negative, and > moving your test particle would still require an external force, it will > still be uphill. > > >> *> the choice is just a convention? This cannot effect conservation of >> energy, which is an empirical result, * >> > > Exactly, all the arguments I gave would be exactly the same, everytime I > used the word "positive" or "negative" just change the word positive to > negative and negative to positive. > > John K Clark See what's on my new list at Extropolis > <https://groups.google.com/g/extropolis> > > . > > > -- 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/365cd31a-eeae-44a2-9038-34c9c76a7424n%40googlegroups.com.
