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Posted on 12/15/09 at 11:57 am to ACL11190
quote:
Bella, bama chicks are too classy to say such words
I've been around Lew.
I'm sorry.
Posted on 12/15/09 at 11:58 am to Bellabama
Quantum mechanics (QM) is a set of principles describing the physical reality at the atomic level of matter (molecules and atoms) and the subatomic (electrons, protons, and even smaller particles). These descriptions include the simultaneous wave-like and particle-like behavior of both matter[1] and radiation[2] ("wave–particle duality"). Quantum Mechanics is a mathematical description of reality, like any scientific model. Some of its predictions and implications go against the "common sense" of how humans see a set of bodies (a system) behave. This isn't necessarily a failure of QM - it's more of a reflection of how humans understand space and time on larger scales (e.g., centimetres, seconds) rather than much smaller.
QM says that the most complete description of a system is its wavefunction, which is just a number varying between time and place. One can derive things from the wavefunction, such as the position of a particle, or its momentum. Yet the wavefunction describes probabilities, and some physical quantities which classical physics would assume are both fully defined together simultaneously for a system are not simultaneously given definite values in QM. It is not that the experimental equipment is not precise enough - the two quantities in question just really aren't defined at the same time by the Universe. For instance, location and velocity just do not exist simultaneously for a body (this is called the Heisenberg uncertainty principle — see its formula in the box to the right).
Certain systems, however, do exhibit quantum mechanical effects on a larger scale; superfluidity (the frictionless flow of a liquid at temperatures near absolute zero) is one well-known example. Quantum theory also provides accurate descriptions for many previously unexplained phenomena such as black body radiation and the stability of electron orbitals. It has also given insight into the workings of many different biological systems, including smell receptors and protein structures.[3]
Even so, classical physics often can be a good approximation to results otherwise obtained by quantum physics, typically in circumstances with large numbers of particles or large quantum numbers. (However, some open questions remain in the field of quantum chaos.)
QM says that the most complete description of a system is its wavefunction, which is just a number varying between time and place. One can derive things from the wavefunction, such as the position of a particle, or its momentum. Yet the wavefunction describes probabilities, and some physical quantities which classical physics would assume are both fully defined together simultaneously for a system are not simultaneously given definite values in QM. It is not that the experimental equipment is not precise enough - the two quantities in question just really aren't defined at the same time by the Universe. For instance, location and velocity just do not exist simultaneously for a body (this is called the Heisenberg uncertainty principle — see its formula in the box to the right).
Certain systems, however, do exhibit quantum mechanical effects on a larger scale; superfluidity (the frictionless flow of a liquid at temperatures near absolute zero) is one well-known example. Quantum theory also provides accurate descriptions for many previously unexplained phenomena such as black body radiation and the stability of electron orbitals. It has also given insight into the workings of many different biological systems, including smell receptors and protein structures.[3]
Even so, classical physics often can be a good approximation to results otherwise obtained by quantum physics, typically in circumstances with large numbers of particles or large quantum numbers. (However, some open questions remain in the field of quantum chaos.)
Posted on 12/15/09 at 11:58 am to Bellabama
We are classy and arrogant....what a combination.
Posted on 12/15/09 at 11:58 am to Bellabama
I'm done with my CTC, i think i'm gonna get out for a lil while. I feel alot better today. I'll be on later.
GD
GD
Posted on 12/15/09 at 11:59 am to Crimsoncutie98
and don't forget.. we're good looking too. 
Posted on 12/15/09 at 11:59 am to Alahunter
quote:
and don't forget.. we're good looking too.
and modest
Posted on 12/15/09 at 12:00 pm to Alahunter
And we know how to have a good time. 
Posted on 12/15/09 at 12:00 pm to Alahunter
BHP and I are the coolest cats on here. 
Posted on 12/15/09 at 12:01 pm to gatorprincess815
quote:
BHP and I are the coolest cats on here.
FACT
Posted on 12/15/09 at 12:01 pm to Alahunter
Us Gators can have a good time too.
Posted on 12/15/09 at 12:01 pm to BlackHelicopterPilot
Oh and I'm smoooove. 
Posted on 12/15/09 at 12:01 pm to Crimsoncutie98
Apparently, there is an alternate universe where we are doing the exact same thing we are doing here.... and Alabama fans are arrogant there too!!!
Posted on 12/15/09 at 12:01 pm to Crimsoncutie98
quote:
We are classy and arrogant....what a combination.
We are arrogant and throw piss bombs.
An even better combination.
Posted on 12/15/09 at 12:02 pm to Crimsoncutie98
quote:
Oh and I'm smoooove.
DAMMIT!!
That hurts!
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