On Thursday, November 7, 2019 at 5:25:56 PM UTC-7, Brent wrote: > > > > On 11/7/2019 4:13 PM, Alan Grayson wrote: > > They've sent 2000-atom sized molecules through double slits. >> >> What about sending cats? >> >> >> You will loss the ability to get the interference, because it is hugely >> more complex to isolate a cat from the environment, so its alive or dead >> state will be pass on you unavoidably very quickly. See my explanation to >> Grayson why any (unknown) interaction of an object in a superposition state >> makes it logically impossible to remain in a superposition relatively to >> you. It uses only very elementary algebra. The quantum effect, to be >> exploited, require perfect isolation, which is impossible for most >> macroscopic object. But some “macro-superposition” have been obtained with >> superconducting device. In fact, superconductor is a quantum macroscopic >> effect. >> >> >> Aside from the isolation problems the de Broglie wavelength of a cat is >> extremely small so to get an interference pattern the slit and slit spacing >> must be correspondingly small. The C60 experiment was only made possible >> by the development of the Tablot-Lau interferometer. >> >> Brent >> > > I've made this point before; the decoherence time for a cat is very very > short, but how does this effect the point Schroedinger wanted to make, > since the cat is in that paradoxical superposition for some short but > finite duration? AG > > > There is no paradox. It's just some hang up you have that a cat can't be > dead and alive at the same time. It's as though your physics was stuck in > the time of Aristotle and words were magic so that "Alive implies > not-dead." was a law of physics instead of an axiom of logic. > > In fact a moments thought will tell you that quite aside from quantum > mechanics there would be no way to identify the moment of death of the cat > to less than a several seconds. It would be simply meaningless to say the > cat was alive at 0913:20 and dead at 0913:21. > > Brent >
You can imagine a different experiment, without cats, with the same paradoxical result. The point of Schroedinger's thought experiment was to demonstate tHE title of this thread; that there's something wrong with the prevailing interpretation of superposition. In your view I am hung up with Aristotle? In my view, you're seduced by some quantum nonsense. 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 everything-list+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/everything-list/f50e8104-8b7b-4ec8-87ba-c837bcc8e4fb%40googlegroups.com.
