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 [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/everything-list/f50e8104-8b7b-4ec8-87ba-c837bcc8e4fb%40googlegroups.com.
