Re: Total energy of the universe

2020-05-08 Thread Alan Grayson
On Friday, May 8, 2020 at 8:28:02 PM UTC-6, Alan Grayson wrote: > > > > On Friday, May 8, 2020 at 4:50:55 PM UTC-6, Lawrence Crowell wrote: >> >> There is no global meaning to energy conservation. There is the >> Hamiltonian constraint Nℌ = 0, which just says that for a local region >> where th

Re: Total energy of the universe

2020-05-08 Thread Alan Grayson
On Friday, May 8, 2020 at 9:32:15 AM UTC-6, Alan Grayson wrote: > > > > On Friday, May 8, 2020 at 7:05:07 AM UTC-6, Alan Grayson wrote: >> >> >> >> On Friday, May 8, 2020 at 5:33:53 AM UTC-6, Bruce wrote: >>> >>> On Fri, May 8, 2020 at 9:02 PM Alan Grayson wrote: >>> On Friday, May 8, 2020

Re: Total energy of the universe

2020-05-08 Thread Alan Grayson
On Friday, May 8, 2020 at 4:50:55 PM UTC-6, Lawrence Crowell wrote: > > There is no global meaning to energy conservation. There is the > Hamiltonian constraint Nℌ = 0, which just says that for a local region > where the lapse function can be parallel translated to the energy is zero. > This i

Re: Total energy of the universe

2020-05-08 Thread Alan Grayson
On Friday, May 8, 2020 at 1:45:15 PM UTC-6, smit joshi wrote: > > Just a laymen curiosity > Alan Gray by your thought that "When an expanding gas cools, doesn't the > energy go into work done to cause the expansion". Let us assume that the > energy loss of red shift fuels the expansion of our u

Re: Total energy of the universe

2020-05-08 Thread Alan Grayson
On Friday, May 8, 2020 at 12:43:55 PM UTC-6, ronaldheld wrote: > > If you attempt to Sum up all of the components, how close to 0 do you get? > Ronald > I didn't try to do that. And I am not asserting the total energy of the observable universe is zero. AG > > On Friday, May 8, 2020 at 4:

Re: Total energy of the universe

2020-05-08 Thread Lawrence Crowell
There is no global meaning to energy conservation. There is the Hamiltonian constraint Nℌ = 0, which just says that for a local region where the lapse function can be parallel translated to the energy is zero. This is for Petrov type O solutions Nℌ = 0 = ½(da/dt)^2 - 4πGρa^2/3c^3 - k Which le

Re: Total energy of the universe

2020-05-08 Thread smit joshi
Just a laymen curiosity Alan Gray by your thought that "When an expanding gas cools, doesn't the energy go into work done to cause the expansion". Let us assume that the energy loss of red shift fuels the expansion of our universe. We know that E=hc/(lamda) and derivative of energy w.r.t wavelength

Re: Total energy of the universe

2020-05-08 Thread ronaldheld
If you attempt to Sum up all of the components, how close to 0 do you get? Ronald On Friday, May 8, 2020 at 4:00:18 AM UTC-4, Alan Grayson wrote: > > If it's not conserved, as seems implied by the red shift due to expansion, > where does it go? TIA, AG > -- You received this message because

Human Challenge Trials

2020-05-08 Thread John Clark
If you want to do something drastic to end this virus nightmare there is something we could do that would be far more effective than waiting for herd immunity as well as being less ethically questionable, although I'm sure some would still clutch their pearls in horror, I'm referring to Human Chall

Re: Total energy of the universe

2020-05-08 Thread Alan Grayson
On Friday, May 8, 2020 at 7:05:07 AM UTC-6, Alan Grayson wrote: > > > > On Friday, May 8, 2020 at 5:33:53 AM UTC-6, Bruce wrote: >> >> On Fri, May 8, 2020 at 9:02 PM Alan Grayson wrote: >> >>> On Friday, May 8, 2020 at 4:24:36 AM UTC-6, Bruce wrote: On Fri, May 8, 2020 at 7:11 PM Alan

Re: Total energy of the universe

2020-05-08 Thread Alan Grayson
On Friday, May 8, 2020 at 5:33:53 AM UTC-6, Bruce wrote: > > On Fri, May 8, 2020 at 9:02 PM Alan Grayson > wrote: > >> On Friday, May 8, 2020 at 4:24:36 AM UTC-6, Bruce wrote: >>> >>> On Fri, May 8, 2020 at 7:11 PM Alan Grayson wrote: >>> On Friday, May 8, 2020 at 2:56:50 AM UTC-6, Bruce w

Re: Total energy of the universe

2020-05-08 Thread Bruce Kellett
On Fri, May 8, 2020 at 9:02 PM Alan Grayson wrote: > On Friday, May 8, 2020 at 4:24:36 AM UTC-6, Bruce wrote: >> >> On Fri, May 8, 2020 at 7:11 PM Alan Grayson wrote: >> >>> On Friday, May 8, 2020 at 2:56:50 AM UTC-6, Bruce wrote: On Fri, May 8, 2020 at 6:00 PM Alan Grayson wrote

Re: Total energy of the universe

2020-05-08 Thread Alan Grayson
On Friday, May 8, 2020 at 4:24:36 AM UTC-6, Bruce wrote: > > On Fri, May 8, 2020 at 7:11 PM Alan Grayson > wrote: > >> On Friday, May 8, 2020 at 2:56:50 AM UTC-6, Bruce wrote: >>> >>> On Fri, May 8, 2020 at 6:00 PM Alan Grayson wrote: >>> If it's not conserved, as seems implied by the red

Re: Total energy of the universe

2020-05-08 Thread Bruce Kellett
On Fri, May 8, 2020 at 7:11 PM Alan Grayson wrote: > On Friday, May 8, 2020 at 2:56:50 AM UTC-6, Bruce wrote: >> >> On Fri, May 8, 2020 at 6:00 PM Alan Grayson wrote: >> >>> If it's not conserved, as seems implied by the red shift due to >>> expansion, where does it go? TIA, AG >>> >> >> Silly q

Re: Universe as a simulated strange loop

2020-05-08 Thread Philip Thrift
On Thursday, May 7, 2020 at 12:00:30 PM UTC-5, Bruno Marchal wrote: > > > > Physicists nowadays assumes much more, like ZFC, to get a base in all > Hilbert space, for example. > > Bruno > > > But in a real operational sense, that is not the case. There is nothing in theoretical physics that i

Re: Total energy of the universe

2020-05-08 Thread Alan Grayson
On Friday, May 8, 2020 at 2:56:50 AM UTC-6, Bruce wrote: > > On Fri, May 8, 2020 at 6:00 PM Alan Grayson > wrote: > >> If it's not conserved, as seems implied by the red shift due to >> expansion, where does it go? TIA, AG >> > > Silly question. If it is not conserved, it does't have to go anyw

Re: Total energy of the universe

2020-05-08 Thread Bruce Kellett
On Fri, May 8, 2020 at 6:00 PM Alan Grayson wrote: > If it's not conserved, as seems implied by the red shift due to expansion, > where does it go? TIA, AG > Silly question. If it is not conserved, it does't have to go anywhere -- it just vanishes. Bruce -- You received this message because y

Total energy of the universe

2020-05-08 Thread Alan Grayson
If it's not conserved, as seems implied by the red shift due to expansion, where does it go? TIA, AG -- 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 everythi