Quantum Entanglement

http://www.joot.com/dave/writings/articles/entanglement/music.shtml ^

[strategofr]

Got a little bogged down in this.

[strategofr]

(Actually, I think this is pretty good. Go to website for illustrations.)

[Publius6961]

Thus a single photon is an electromagnetic wave carrying one quantum of energy. Since it is a wave, it has a frequency;

Here's where the "explanation "lost" me.
The discussion went from "behaves like a wave" to it is a wave. Not buying it. If it can be both, there needs to me an explanation for that; analogous or otherwise...

[Ernest_at_the_Beach]

Perhaps this will help explain this:

A non-running computer produces fewer errors

[A CA Guy]

F-Disk

[Ernest_at_the_Beach]

I will read thru again tomorrow....going to go read about Cantor's levels of infinity...for awhile now....thanks.

[Marine_Uncle]

Rather heady stuff to say the least. I'll stick with the cat in the hat.

[non-anonymous]

How do the photons arriving at detector B know that the polarizations have been "erased" at detector A?

What's even weirder is that if you put detector A far away such that the photon arrives at B first, you still get the interference pattern. How do the photons arriving at detector B know that the polarizations eventually will be "erased" at detector A?

[MilesVeritatis]

It's been years since I've had a p-chem headache. Thanks, everyone!

LOOSELY: All matter consists of waves. Everything is quantized. Everything exists at a certain state/energy level. For very tiny things (electrons, protons, photons, etc.), the allowed energy levels are easily distinguished because these levels are clearly separated by energy zones that are forbidden (you can only stand on the run of a step in a staircase and not the rise). As we consider larger and larger objects, the permitted states run closer together (rise becomes smaller and smaller) to the point that they seem to run together into one smooth continuum of allowed states. This creates the illusion of no quantization for macroscopic objects, which is described by Newtonian Mechanics (which may be considered a subset of Quantum Mechanics).

Waves have wavelength and particles have mass. De Broglie related the two qualities in a simple equation. So, they are related and experiments using the relation do work!

de Broglie relation

A decent reference

[ImaGraftedBranch]

Bump for homeschool physics...

[Doctor Stochastic]

It is neither a wave nor a particle; it is a photon. There are measurements that give "wave-like" results; when performing one of these, the photon has all the properties of a wave. There are other experiments that give "particle-like" resluts; when performing of these other expemints, the photon has all the prpoerties of a particle.

Photon is a photon is a photon. (If you prefer Rand to Stein, delete the first two words of the previous sentence.) Wave and particle are our descriptions of experimental results, not descriptions of photons.

[Ultra Sonic 007]

FutureTech ping!

[AntiGuv]

Seems to me a prime candidate for the Science ping list!

[PatrickHenry]

Very nice, but it's really just a tutorial. No ping list deployment.

[AntiGuv]

I bow to your better judgment!

[PatrickHenry]

Not "better." Just my judgment. I worry about "ping fatigue," so I try not to ping for everything that comes along.

[MilesVeritatis]

Agreed. My public school had a lame physics class for senior level students. We had to go elsewhere for an AP physics class.

[r9etb]

Oh. I thought perhaps it was a thread about a beautiful physicist/beach babe...

[MilesVeritatis]

If there were physicists like that when I was at university, I would have switched departments...and would have developed the need for much tutoring during her office hours.

Hey, wait just a minute! She can't be a physicist--where's the pocket protector??? For that matter, I don't see space for a pocket in that suit.

[r9etb]

at university

I'm guessing you're Canadian or English?