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/sci/ - Science & Math


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File: 117 KB, 900x928, entangled-diamonds.jpg [View same] [iqdb] [saucenao] [google]
4099705 No.4099705 [Reply] [Original]

http://www.livescience.com/17264-quantum-entanglement-macroscopic-diamonds.html

Saw this posted on /a/ of all boards, mostly coupled with reaction images, no real discussion. Now, I'm no scientist, far from it, but this seemed intriguing to me. What does this mean, exactly? If you have two entangled, say, erasers and you flick one with your finger, would it send both of them rolling? How about if you make a cut in one of them with a knife? It all seems very odd if I understood it right, but I guess stranger things have happened before.

>> No.4099708

Entanglement is really wierd and complicated.

>> No.4099714

the thing that is connected it weather they vibrate or not. so if you touch one to see if it is vibrating, and it is vibrating, the other one will stop vibrating (before that it is both vibrating and not vibrating). that's about it. other properties arnt connected so by cutting /moving one, the other wont do anything.

the touching this is exaggerated because its not vibrating enough to be felt, but you can detect it by shining a laser into it, thus it can be used in quantum computers to store data.

>> No.4099833

You know about the idea that 2 objects cannot exist in 1 spot at the same time? And that 1 object cannot exist in 2 spots at the same time?

Yeah. Turns out that's not actually true. Or to be more accurate, only one of those laws can be true. The only reason it seems like it's true, is because we've made scientific laws to say it will never happen.

Even if we DID observe it happen, our understanding of it would be "But those aren't actually the same object. 'Something else' is going on" or "That's not 2 objects in one spot. It's just a different object altogether."

I guess the best way to put it is that, yeah. Both erasers get affected, because there is only 1 eraser to begin with. Goddamn, this is hard to explain... I wish I could go into more detail, but I'd have to draw up images and shit. Just keep this things in mind:

1) Spin is the inherent "momentum" of a particle
2) Spin can be "negative", it just means that it's momentum is in the "opposite" direction.
3) When entangled, the Spin of one object changes inversely with the other.

Long story short, to go to your eraser example: If you kicked one eraser, what happens is the other eraser will go flying off in the exact opposite direction. The energy within the interaction is still in equilibrium, because the net force of the erasers, no matter how hard you kicked one, is still 0 (that is, if you chose for their initial momentum to BE 0).

>> No.4099865

You have two options. I believe what your referring to is magnetics. Okay so, the Magnet's can either be ON (Connected) or OFF (Disenfranchised...and broken, out of money and can't afford to pay the electricity bill, In other words: Disconnected) Electricity is created by friction between these two locked states. Some form of Radiation, or Heat has to be running through these...to create this effect. Unfortunately without movement or spin these poor electrics won't create heat...so no movement no heat no friction, unless of course your in a vacuum or some other type of Dust Devil then stuff just begins to get weird...especially in the Eye of the Storm that is a Dust Devil. Did I just explain Thermodynamics with words and no numbers?

>> No.4099883

>: If you kicked one eraser, what happens is the other eraser will go flying off in the exact opposite direction
no, thats not how entanglement works, to use that example:
you can have 2 erasers that are entangled and when you look at the one, 2 things can happen
1) the eraser stands still, then the other one is flying acros the room, or
2) the eraser goes flying across the room, so the other one is standing still.

you cant transfer a force from one to the other with entanglement, or any change in the state for that matter. this is why you cant send information with it.

>> No.4099885

>>4099833

and what's even more mind blowing is that this happens at quicker than the speed of light.

So if the "two" erasers were a light year apart and you kicked one the other would move immediately even though nothing can travel faster than light.

Every time I think about this my mind fucks itself sideways.

>> No.4099892

>>4099865

No. Numbers N = 1 O = 0

2 States For these ON and OFF

Is there a third State for which this matter could transform though?

What does Yttrium and Einsteinium make...

This is an old trick I use when remembering things.

It's called Mnemonics. Going into Comp Eng...

>> No.4099909

>>4099885
its getting fucked because >>4099833 is completely wrong.

>> No.4100270
File: 28 KB, 1178x757, coin flip.png [View same] [iqdb] [saucenao] [google]
4100270

>>4099909
I'm not wrong. I've just done a piss-poor job of explaining it.

Entanglement states that the momentums of entangled objects are always equal, but opposite. This translates, of course, to CW and CCW "Spin". The total momentum, however, is indefinite until measured.

The only thing that is changing in the measurements is the perspective itself. Particles are figuratively 2 sides of the same coin, and entanglement is like looking at both sides of the same coin at the same time.

I'll use this picture as an example. Now as you know, both coins are the same coin. Coin "A" is the coin viewed with A on the front. Coin "B" is the coin viewed with B on the front. Remember, both coins are the same coin, and aside from which coin is "front", they each share the same orientation.

Now if Coin A spins, Coin B must spin at an equal rate. However, for Coin B to be spinning at the same rate, it needs to spin in the opposite direction. Thus, coin A appears to spin clockwise, while coin B appears to spin counterclockwise. System is a closed system, and maintains equilibrium the whole time.

>> No.4100286

IT IS IMPOSSIBLE TO TRANSMIT INFORMATION WITH ENTANGLED PARTICLES.

If you think you've found a way to do it, then your understanding of what entangled particles are is incorrect.

>> No.4100306
File: 26 KB, 1178x757, coin flip1.png [View same] [iqdb] [saucenao] [google]
4100306

>>4100270
Continuing.

Now let's say that we attach a miniature camera that always rotates at the same rate as coin B, but we have another camera which does not rotate at all. Both coins are still the same coin, however, they are being viewed from different perspectives.

According Camera A, both Coin A and Coin B are spinning at the same (but opposite) rates. However, according to Camera B, the coin is not spinning at all. It just sits there.

So which camera is the reality? Unfortunately, each perspective is in itself skewed. We refer to this as "Observer effect", and because of observer effect, we end up with 2 completely contradictory results.

This, in essence, is what is going on with quantum entanglement. The method of observation we attempt is flawed in itself, which results in us not understanding what we are looking at. It is deemed as non-nonsensical or impossible, however, it is happening and we have no means to disprove it.

I've drastically simplified what is "really" going on here. However, it's not an exaggeration to say that those diamonds are "the same diamond". Or at least the parts that vibrate are.

>> No.4100361

>>4100286
I don't really think I've found a way.

But I'm still curious about why it's impossible. Why's that?

>> No.4100386

>>4100361
Copenhagen interpretation.
Wavefunction collapses are observer dependent.
Particles are only entangled because their entanglement represents your current state of information about the system.

>> No.4100482

>>4100386
The article mentions that Oxford physicist Michael Sprague claimed that it could be used for information in the future.

Is he wrong, or is the idea he's going for different somehow? Serious question, I'm fuzzy on that issue.

>> No.4100492

>>4100482

Where does it say he says you could send information?

>> No.4100504

psuedoscience everywhere.

quantum entanglement CANNOT

i repeat CANNOT

CAN NOT

CAN FUCKING NOT

<span class="math">CANNOT[/spoiler]

BE USED TO TRANSMIT INFORMATION


OF ANY KIND


if you don't KNOW what the definition of 'INFORMATION' is, please feel free to look it up.


NOTHING GOES OVER c.

ABSOLUTELY NOTHING.

>> No.4100554
File: 328 KB, 900x641, 132298464379.png [View same] [iqdb] [saucenao] [google]
4100554

>>4100504
No one is saying you can (except maybe OP, but im fuzzy as to what the fuck he is talking about), someone just asked why you cant. saying ITS IMPOSIBLKE! isnt a respond to that.

>> No.4100584

>>4100361
its impossible because you need a classical channel such as a light signal with it to send information. this signal is limited by the speed of light (lol neutrinos). without a classical channel to send the extra information it looks identical to a untangled particle.