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GUTHlX
01-03-2012, 02:49 AM
http://www.youtube.com/watch?v=7SjFJImg2Z8

Zockuito
03-24-2012, 03:24 PM
That's pretty wild stuff huh?

momotron
03-24-2012, 03:59 PM
loved physics at college :)

Gucci
03-24-2012, 04:24 PM
The book is quite a good read. Read it to write a book report for physics and was actually a book report I enjoyed doing.

brandon8081
03-28-2012, 08:34 AM
http://www.youtube.com/watch?v=IOYyCHGWJq4

Gala
04-02-2012, 10:15 PM
There are infinite results of this problem: There are more than "dead" or "alive" in "real" quantum physics.
This leads to this one:

-> Heisenberg uncertainty principle (http://en.wikipedia.org/wiki/Uncertainty_principle)

This is the equation:
http://upload.wikimedia.org/wikipedia/en/math/0/a/1/0a1c02498125a255a2f5b0e58908a8ae.png

All it says, is that you can't get the impulse and the position of electrons at the same time. You just can give a possible "room" where it is -> "blurred" position or a blurred impulse.
Just in case someone is interested in :P

(correct me if I am wrong)

tehq
04-02-2012, 10:41 PM
There are infinite results of this problem: There are more than "dead" or "alive" in "real" quantum physics.
This leads to this one:

-> Heisenberg uncertainty principle (http://en.wikipedia.org/wiki/Uncertainty_principle)

This is the equation:
http://upload.wikimedia.org/wikipedia/en/math/0/a/1/0a1c02498125a255a2f5b0e58908a8ae.png

All it says, is that you can't get the impulse and the position of electrons at the same time. You just can give a possible "room" where it is -> "blurred" position or a blurred impulse.
Just in case someone is interested in :P

(correct me if I am wrong)

The uncertainty principle can be solved to within a determined percentage now. However, this is only used, afaik, at CERN and leading research facilities. It usually yields an error in femto or pico units.
http://img221.imageshack.us/img221/2366/hup.png
thus allowing one to solve for both position and velocity as a function of time :)

Gala
04-02-2012, 10:48 PM
But this seems to be a function for the "blurred" position of the "blurred" impulse.
This is what the uncertainty principle says: You can get the solution with a given percentage, but it is impossible to solve it for both, isn't it? (both exactly)

Edit: Aren't even errors in femto and pico units big enough to destroy such experiments in CERN?

tehq
04-02-2012, 11:33 PM
But this seems to be a function for the "blurred" position of the "blurred" impulse.
This is what the uncertainty principle says: You can get the solution with a given percentage, but it is impossible to solve it for both, isn't it? (both exactly)

Edit: Aren't even errors in femto and pico units big enough to destroy such experiments in CERN?

I've visited CERN multiple times for some of my doctoral studies and they generally strive for an error in attometers. This is because their best guess at the diameter of a proton is about .8 fm. (Yes, I know protons aren't spherical.) At the LHC, they consider an error in units of am to ym acceptable due to the relative size of the proton. So, you can't necessarily find the Exact measurements, but you can find the position to within Less than One diameter of a proton.. Very astounding if you ask me. It may eventually be possible to solve a problem like this to a 100% degree of accuracy.

As for the OP, i think you should check out consistent histories. (coherent with the Schrodinger Eq.)

Gala
04-03-2012, 01:04 PM
Ok, I thought even this were not accurate enough.

But the equation you posted above is just the uncertainty principle just with an other constant.(h->h/2Pi)
I thought this was the principle on what the whole quantum physics theory is based on. Isn't it a kind of "axiom" that you can't get the exact position and the exact impulse (velocity) for the same t of an electron?