Quantum Entanglement

[Benny]

Not sure if anyone fancies this one, (apart from the Git™) but does anyone know anyhting about this?

Realms of fantasy but real, crazy sheeeet....

Please don't post crap, I'm generally interested..

[Anonymous]

I know nothing but here is some info

and here is a more concise explanation

[smilodon]

Ahh now this I do know about. To be honest it's odd, because as soon as I started replying I thought 'Nah everyon is going to think this is a wind up', but in reality I've been facinated by the general subject of quantum physics for years. I don't study it on a scientific level but follow the arguements and theories closely.

My interest piqued when I left college and discovered a few very well written books aimed at the layman that covered Quantum Theory. But it was A brief History of Time that really hooked me on the subject.

You'll find masses on the web. Welcome to the World of Weird.

(Broken PC at the moment so I'm only checking the forums on my occassional visits to the office)

[Benny]

From what I've read (not much) recent experiments have shown that the correlation between the seperated particles(?) isn't affected as much as originally thought by external forces.

So essentially breaking up the photons for example, although you send one set in one direction, you can predict or use the information contained to recreate the originals.....

Go on Star Trek transporters....or even better, beam me a Mars Bar over here.

Crazy sheeeeet, something seperated by relatively huge distances still maintains a relationship with the other half...crazy god stuff.

[TeaLeaf]

Originally posted by Benny@Aug 17 2004, 11:34 AM
crazy god stuff.

That is the essence of quantum mechanics.  Hawking himself could not have put it better.

As an aside I ought to admit to having been reading into this whole area and other geeky type topics  such as chaos theory, factals and other maths & physics theories since the tender age of 13 - at which age I got a book out from the local library about sub-atomic particles.  I've been hooked ever since........

TL.

[smilodon]

Wow, who'd have thought we had a few UberGeeks in our midst. Maybe we could find a quiet corner at the LAN and discuss the esoteric wonders of Quantum Mechanics?

Ok maybe not.

[TeaLeaf]

Originally posted by smilodon@Aug 17 2004, 12:38 PM
Ok maybe not.

Motion carried.  Although I ought to point out that I am not carrying anyone's motion, no matter how much money they offer.

One of my regular entertainments is watching my cousins and remoter issue grow up and get to a stage where they know enough maths to be confounded by the alegebraic proof that 1 = 2 :lmfao:

For the non-mathematical the 'trick' occurs in the last line of the proof as if a = b then (a² - ab) = 0 and you cannot divide by 0 to get the given answer.

TL.

Proof that 2 = 1

let a = b

Multiply both sides by a
a² = ab

Add (a² - 2ab) to both sides
a² + a² - 2ab = ab + a² - 2ab

Factor the left, and collect like terms on the right
2(a² - ab) = a² - ab

Divide both sides by (a² - ab)
2 = 1

QED.

This proof can also be used as a proof by contradiction that a can never be equal to b.

[Thulsa Doom]

Originally posted by TeaLeaf@Aug 17 2004, 12:45 PM
Proof that 2 = 1
let a = b
Multiply both sides by a
a² = ab
Add (a² - 2ab) to both sides
a² + a² - 2ab = ab + a² - 2ab
Factor the left, and collect like terms on the right
2(a² - ab) = a² - ab
Divide both sides by (a² - ab)
2 = 1
QED.

If you assume a=b,
then
Add (a² - 2ab) to both sides
     a² + a² - 2ab = ab + a² - 2ab
surely equals 0 on both sides not matter what value a is.
Not sure what the above proves.

...maybe I'm a bit thick  

[TeaLeaf]

Originally posted by Thulsa Doom@Aug 17 2004, 01:24 PM
If you assume a=b,
then
Add (a² - 2ab) to both sides
   a² + a² - 2ab = ab + a² - 2ab
surely equals 0 on both sides not matter what value a is.
Not sure what the above proves.

...maybe I'm a bit thick

That's the whole point.

Mathematically adding zero makes no odds, it is an allowable calculation even though it makes no difference.
As kids learn algebra they pick up that youy can to anything you like to an equation, so long as you do the same to both sides - so they assume that adding (a² - 2ab) to both sides is an allowable operation (which it is).
What they do not tend to do is calculate and register the fact that (a² - 2ab) = 0.
Where the proof falls mathematically is that you cannot divide by zero and that's the last line of the proof.

So no, you're not being thick, you're just thinking about it more than your average 12-13 year old does
Which is why it is only ever amusing to show it to your cousins etc as they start to learn algebra.  I have had several on the go for weeks trying to figure out how it works :lol:

TL.

[smilodon]

Originally posted by Benny@Aug 17 2004, 09:19 AM
..... I'm generally interested..

Got bored then  

[Benny]

Nope, not at all, (have you read the posts above?)

[Thulsa Doom]

Originally posted by TeaLeaf@Aug 17 2004, 01:43 PM
So no, you're not being thick, you're just thinking about it more than your average 12-13 year old does

glad I'm smarter than a thicko 12-13 year old  :lol:

[smilodon]

Originally posted by Benny@Aug 19 2004, 09:15 AM
Nope, not at all, (have you read the posts above?)

Yep but no discussion developed, other than TL and his divide by zero conundrum

[Cadaver]

A story related to the subject in today's BBC Online.

[Benny]

I try Smilo, I try, I was hoping someone with a lot more knowledge than me would go off on one.

Questions about what the relational force are the bits I can't get my head round. Oh and here's my starter....http://www.focusmag.co.uk/currentIssue.asp