/sci/ - Science & Math

[Anonymous No.2083823]

CERN researchers have trapped antihydrogen for the first time.

[Anonymous No.2083827]

shut up fuck off who cares

[Anonymous No.2083830]

CERN researchers have trapped antihydrogen for a long time.

Fixed it for you.

[Anonymous No.2083832]

No they didn't. They CREATED it. They didn't trap shit.

[Anonymous No.2083851]

>>2083832
you obviously know a lot about it

[Anonymous No.2083854]

>>2083832

They trapped it long enough to make meaningful observations. They can't hold it indefinitely, but they can hold it long enough to study it.

It just happens that this period of time happens to be 1/10th of a second.

[Anonymous No.2083865]

>>2083854
100ms is quite a bit of time given the measurement equipment we have available.

Not to suggest you don't know this but just trying to add to the conversation.

[Anonymous No.2083870]

Next, suspend it in a mercury-like globule between two battery-powered magnetic plates, and place it beneath the Vatican...

[Anonymous No.2083871]

>>2083865

Yeah, I was just pointing out to that guy that I know roughly how long they can trap the antihydrogen for and that, even though it seems like a fairly miniscule amount of time, it's more than enough.

[Anonymous No.2084530]

In particle physics, 1/6th of a second is forever. It's the opposite of geology, where "recently" means "within the last ten million years".

[Anonymous No.2084536]

>>2083870
What would be the consequence of that?

[Anonymous No.2084542]

>meaningful observations

"Yup, it's antimatter."
What else did they 'observe'?

coectabi Basil

[Anonymous No.2084571]

emission spectrum of it is a big deal that lets you test QED and a bunch of other shit

[Anonymous No.2084577]

>>2084542

[Anonymous No.2084581]

>>2084542

we don't know much about antimatter's caracteristics.
especially it's gravitational properties

[Anonymous No.2084583]

>>2084581
>Doesnt know what antimatter is

LMAO, we know just as much about the gravitational properties of anti-matter as we do regular matter. The mass of a particle and its anti-particle are the same you dumbshit.

[Anonymous No.2084584]

>>2084583
>implying there's any evidence that supports antimatter gravitationally attracting matter with the same magnitude that matter attracts matter
>implying antimatter has been produced in quantities high enough to measure gravitational properties

[Anonymous No.2084590]

>>2083827
Theist/agnostic/religiousfag detected.

[Anonymous No.2084592]

>>2084584
>Implying you know shit about particle physics, and arent just some underage troll

LMAO
Gravity only depends on mass (+ mometum). Things with equal mass behave the same way graviataionally. FUCK OFF TROLL!

[Anonymous No.2084595]

>>2084592
You're assuming that based on current models, fuckwit. It's kind of important to actually test things instead of just assuming, that's why it's called science not philosophy.

[Anonymous No.2084600]

>>2084595
>Gravity isnt correlated with mass

WTF I AM READING?
gtfo!

[Anonymous No.2084602]

>>2084592
>talking about someone being underage
>misspell momentum, gravitationally, and back up points using high school physics

[Anonymous No.2084605]

>>2084595
"gravity" is defined as the interaction associted with mass.....DURRR. Its the fucking definiton.

If an iteraction doenst depend on mass, it is not called gravity, it would be called somthing else (other forces exists too dumfuck).

[Anonymous No.2084606]

>>2084602

Now, to be fair to him, you have to see it like this: most cases of mental retardation is genetic. It's not HIS fault that he's so dumb.

[Anonymous No.2084607]

>>2084595

[Anonymous No.2084609]

>>2084602
The theory of gravy has been proved to be accuratte

[Anonymous No.2084612]

>>2084605
>>2084607
>>2084609
So..much..retardedness...can't...cope...hnhnngnhghhgnhhh

[Anonymous No.2084616]

>>2084595
You seem to be underage and retarded.
GTFO!

[sage No.2084619]

>>2084612
Obvious troll is obvious

[Anonymous No.2084622]

>>2084612
Dis tiem, we didunt foggoets teh gravy.

[Anonymous No.2084621]

>>2084592
I haven't actually taken classes in particle physics but I have skimmed through a couple of textbooks out of interest. However, I do know how science works. Science doesn't work by assuming that the current model is always correct. Science works by testing the current model to see if it is. At the moment, we have a model for gravitation that would imply that matter attracts antimatter at the same rate as it attracts matter. However we also have models with an asymmetry between matter and antimatter. For example, anti-neutrinos and neutrinos have different chiralities. (If I recall correctly neutrinos are left-handed, but I forgot.) There's also a neutral Kaon particle that can decay into either anti-matter or matter, but does so with unequal probabilities.

The CPT theorem guarantees that antimatter attracts antimatter like matter attracts matter. But we don't know about matter-antimatter attractions.

Also
>gravity depends on momentum
Stress-energy tensor?

>>2084605
>If an iteraction doenst depend on mass, it is not called gravity,
>mfw the geometric nature of general relativity shows that the mass of a test particle is irrelevant to its trajectory

[Anonymous No.2084627]

http://www.nature.com/news/2010/101117/full/468355a.html

[Anonymous No.2084636]

>>2084616

Actually shit brick, this is an important thing to test. Science is all about checking things we assume as well as things we've no idea about

[sage No.2084646]

>>2084621
>I haven't actually taken classes in particle physics

That explains why you have no fucking idea what you are talking about, and you sound like a dumbshit. I agree that experimental obervation is nesscary, and that our theories can (and do) change.

However, the problem is that you are not actually debating science. You are misunderstanding the fucking way we define "gravity" to being with.

Gravity is fucking defined to be correlated to mass only. WHAT PART OF THAT DONT YOU UNDERSTAND? If we discovered some other force, that depended on shit other then mass, IT WOULD NOT BE CALLED GRAVITY!

Since a particle and its antiparticle have the same mass, they are Gravitaionally equivalent, (according to the way we defined gravity).

Are you really that fucking retarded? Trolling? If you aren't a troll, then feel free to ask me some particle physics questions. Maybe I can clear up some of the shit you are misunderstanding.

[Anonymous No.2084654]

>>2084646
>>2084646
>Gravity is fucking defined to be correlated to mass only.
>mfw stress-energy tensor
>http://en.wikipedia.org/wiki/Stress-energy_tensor

[Anonymous No.2084656]

>>2084646
Gravity is not defined as attraction proportional to mass. Magnetism is attraction proportional to mass, for the right objects.

If they detect attraction between the Earth and some antimatter that differs from the expected amount of attraction for the inertia that the antimatter has, then we've seen something new. If you've got a problem with this, I suggest getting the fuck out.

[Anonymous No.2084658]

>>2084646
>feel free to ask me some particle physics questions
Explain why even though each gluon carries a color and an anticolor and there are three of each, there are eight gluons instead of nine.

[sage No.2084665]

>>2084654
I was dumbing shit down. Mometum is equivalent to mass in particle physics dumbshit.
As mometum generates a "relatistic mass"...DURRR

[Anonymous No.2084668]

>>2084665
>Mometum is equivalent to mass in particle physics dumbshit
Except the part where mass is an invariant and momentum isn't? Where mass is a scalar and momentum is a vector?

>mometum generates a "relatistic mass"...DURRR
>misspells relativistic
>thinks relativistic mass is still used as a concept

Also if gravity depends only on mass, explain frame-dragging.

[Anonymous No.2084673]

Dumb question maybe, but matter is attracted to the earths gravitational forces, so is anti-matter repelled by it?

[Anonymous No.2084675]

>>2084673
We don't know yet. Most physicists believe anti-matter would fall downward too, but it hasn't been tested.

[Anonymous No.2084678]

>>2084658

Well, it has alot to do with the group theory involved in QCD. Becuase of your question I will assume you know alittle.

The simple answer: The local symmetry group for QCD is SU(3). From group theory, we know that, a local symmetrygroup of dimension N has N²-1 generators that generate the transformations under which the physical quantities are invarient.

Hence for QCD, which is represented by SU(3), we have 8 generators (hence 8 gluons)....DURRRR

Make sense?

[Anonymous No.2084681]

>>2084678
Yes... yes it does... but can you give a physical interpretation of it too?

[Anonymous No.2084685]

>>2084583
>>2084592
>>2084600
>>2084605
>>2084607
>>2084607
>>2084609
>>2084616
>>2084616
>>2084619
This guy is either a very bad and unoriginal troll or a generic 13 year old suburban kid. It would be for best if you just ignored him... nothing to gain talking with such mental midgets

[sage No.2084686]

>>2084668
LMAO,

It is painfully obvious you have no fucking idea what you are talking about.

If you want to get technical, particle physicsts deal with 4-vectors. The square of mass is equivalnet to the square of the 4-mometum.
They are the same type of object.

That is what is ment by "mass is equivalent to mometum". Go read a book son.

[Anonymous No.2084688]

REPENT REPENT REPENT

[Anonymous No.2084706]

>>2084681

A gluon cannot be truly white, else it wouldnt interact with shit. Hence from our nine possible combinations, we rule out the truly white one. (Truly white = White with no color preference).

Hence we are left with only 8, gluons.

[Anonymous No.2084710]

>>2084685

[Anonymous No.2084715]

>>2084706
Racist motherfucker.

[Anonymous No.2084759]

I'm afraid this thread needs to be put out of it's misery

[Anonymous No.2084766]

>>2084759

Oh lawd those titties

[Anonymous No.2084841]

Wake me up when they finally dig a black hole

[Anonymous No.2085211]

>>2083823
this is amazeing

[Anonymous No.2085225]

>this thread

[Anonymous No.2085244]

you're late op.

[Anonymous No.2085273]

>mfw /sci/ don't know SHIT about sciences