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dgorman
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I'm sure you've all heard of Schrodinger's thought experiment regarding Quantum Mechanics.
The question is: does the cat constitute an observer?
The question is: does the cat constitute an observer?
I went with curiosity and never looked back.no matter how you kill it
Sure, I love orange juice!are you familair with superfluids?
chroot said:Well, I'll give you a bit to start with. If you take a bucket of liquid helium and cool it down to within a few degrees of absolute zero, it undergoes a phase transition called Bose-Einstein condensation. All the atoms hurry to enter the same quantum state, because that minimizes their total energy. So you wind up with a bucket full of atoms that have all agreed to be in the same state. What happens when you try to use it like a normal fluid?
chroot said:Well, I'll give you a bit to start with. If you take a bucket of liquid helium and cool it down to within a few degrees of absolute zero, it undergoes a phase transition called Bose-Einstein condensation. All the atoms hurry to enter the same quantum state, because that minimizes their total energy. So you wind up with a bucket full of atoms that have all agreed to be in the same state. What happens when you try to use it like a normal fluid?
Well, you'll notice it flows without viscosity. That's right, it flows without resistance through even the very smallest pores in your container, and through even the smallest pipettes. Why? Because all the atoms are already in their lowest energy state. Since they're all doing the same thing, though, the walls of a pipette can't smack them around too much -- you can't smack around one, you have to smack around every single last trillion of them.
Superfluids also will only permit certain values of angular momentum, e.g. 3 or 5 or 7 rotations per second. Even if you spin the bucket at 4 rotations per second from now to eternity, the helium atoms won't care. Angular momentum is quantized for their collective quantum state, and they'll only rotate at 3, 5, or 7, and never, ever at 4.
And the list goes on. You can basically consider a bucketful of liquid helium to be like one giant macroscopic quantum object.
- Warren
swansont said:I don't think that that counts as a BEC. http://www.aip.org/physnews/update/532-2.html announcement would seem to imply otherwise. I'm pretty sure BEC is a transition in a gaseous state, without becoming a liquid or a solid.
Marissa* said:That also fascinates me.
But you say 3, 5 or 7. Does it extend to 1 and -1, or is it an approximation? Is zero a valid angular speed?
And is there a phenomenon of superposition of different speeds?
dgorman said:does the cat constitute an observer?
chroot said:Any particle interacting with an object in a mixed state will collapse the superposition and puit the object into a pure state.
- Warren
dgorman said:I'm sure you've all heard of Schrodinger's thought experiment regarding Quantum Mechanics.
The question is: does the cat constitute an observer?
Schrodinger's Cat is a thought experiment proposed by physicist Erwin Schrodinger in 1935. It is used to illustrate the concept of quantum superposition and the role of an observer in determining the state of an object.
According to the principles of quantum mechanics, the cat can exist in a state of superposition, where it is both alive and dead at the same time. However, this is just a theoretical concept and does not apply to real-life situations.
In this thought experiment, the role of an "observer" is to interact with the system and determine its state. This can be in the form of measuring or observing the cat, which then collapses the superposition and the cat is either alive or dead.
The experiment is purely theoretical and does not have any real-life applications. It is used to explain complex quantum concepts and is not meant to be taken literally.
The experiment raises philosophical questions about the nature of reality and the role of consciousness in shaping it. It also highlights the limitations of our current understanding of quantum mechanics and the need for further research and exploration.