Linked by David Adams on Tue 13th Dec 2011 02:41 UTC, submitted by sjvn
Editorial The more I look at what HP has had to say about webOS; the more I think the project's as dead as a doornail.
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RE[3]: On the flip side...
by zima on Tue 20th Dec 2011 23:59 UTC in reply to "RE[2]: On the flip side..."
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Quantum Mechanics allows this sort of thing all the time. Google Schrodingers Cat. Basically, all particles exist in a mix of all possible states until somebody measures it, then the different states collapse, and leave you with the most likely state.

Don't say "exist" (and so on) like it's a done deal (also, not necessarily "somebody" - might be as well SOMETHING & ~'observation means interaction' - well, at least in part of the variants); it's just one of interpretations of quantum mechanics, interpretations basically trying to give an answer to the "but, what do those equations actually mean, what kind of world do they actually describe?" question ...which, in the end, is not even that important (one of interpretations essentially states that the equations ARE our world)

Plus, Kopenhagen doesn't really advocate both dead and alive cats, that thought experiment mostly just shows how different quantum world is from our own weird narrow slice, weird scale & perception (really, think about how, say, ridiculously 'dense & filled' it is with 'solid' objects, in comparison to the standards of quantum world or of the large scale universe structures - arguably more 'real' ones, in how they actually matter)

And nearby...
also, you see this effect in real life if you use a diffraction grating with an electron, it causes a pattern of diffraction to be formed by the single electron moving through the grating. This is caused by the electron taking all possible paths to it's destination.

That goes into gibberish - single electron will never form a pattern of diffraction, it will hit in one spot and that's it (interaction with the target is what shows the "particle" behaviour).
'Probability wave' of "the single electron" in quantum superposition takes all paths - it can interact with itself, influences the chances of where that spot will be. Duality here means that aggregates of many electrons, which didn't have the opportunity to interact among themselves in any way, reveal the distribution characteristic of diffraction (but one might as well hit in a "minimum" of two-slit interference)

Edited 2011-12-21 00:19 UTC

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