On Sunday, October 27, 2019 at 6:56:37 PM UTC-6, Alan Grayson wrote: > > > > On Sunday, October 27, 2019 at 10:04:42 AM UTC-6, Lawrence Crowell wrote: >> >> On Sunday, October 27, 2019 at 8:05:47 AM UTC-6, John Clark wrote: >>> >>> On Sat, Oct 26, 2019 at 5:24 PM Alan Grayson <[email protected]> >>> wrote: >>> >>> > *GR is a classical theory, which assumes a classical space-time >>>> field.* >>> >>> >>> General Relativity assumes space and time are continuous and infinitely >>> divisible, Quantum Mechanics assumes it is not, hence our 2 best physical >>> theories are incompatible and that makes physicists unhappy. >>> >> >> Quantum mechanics makes no particular prediction on the continuity of >> spacetime. If one equates the Schwarzschild radius with a Compton >> wavelength you get the Planck scale of 1.6x10^{-35}m. However, this really >> just tells us one is not able to locate a qubit in a region smaller than >> this scale. The Fermi and Integral spacecraft data on arrival times of >> different wavelengths of radiation from burstars indicates spacetime is >> smooth to two orders of magnitude smaller than the Planck length. >> >> LC >> > > You're out of my depth here. If the Schwartzshild radius has one value, > and the Compton wavelength has another value, why would anyone want to > equate them? AG >
This equality is the elementary condition for a quantum unit of black hole. LC > >> >>> >>> >>> > *But if you assume a classical field at the microscopic level, will >>>> GR give answers which are contradicted by measurements?* >>> >>> >>> Every time we've tested General Relativity it has easily passed the >>> test, but nobody has made a measurement at the singularity in the center of >>> a Black Hole where spacetime is infinitely curved, at that point General >>> Relativity breaks down and can no longer tell us what's going on. >>> >>> 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/b88de4b0-1664-4ef9-9428-672f7ce2122f%40googlegroups.com.
