Talk:Matter

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Contents 1 Slang 2 Vocabulary 3 Matter and Energy 4 What is Matter 5 Matter in role playing 6 expert-expansion-sources 7 Lenin An Authority on Physics?

[edit] Slang

"Colloquially and in chemistry, matter is easy to define. Matter is the stuff which things are made of and consists of chemical substances. These are made of atoms, which are made of protons, neutrons and electrons. In this way, matter is contrasted with energy."

Is it wise to use "Stuff" in the definition. The way I was taught "stuff" is slang and should be used in defining words if anyone can think of a better word please do so, it kinda looks out of place

[edit] Vocabulary

Matter:Anything that has mass and takes up space Mass:the amount of matter Weight:the pull of gravity

Property Solid Liquid Gas Has Weight Yes Yes Yes Takes up Space Yes Yes Yes Has its own definite shape Yes No No Take the shape of the Container No Yes Yes

States Particles Solid Move very slowly

                                        Very close to each other

Liquid Move faster than Solid

                                        Further apart

Gas Move very fast

                                        Very apart from each other

The general properties of matter result from its relationship with mass and space. Because of its mass, all matter has inertia (the mass being the measure of its inertia) and weight, if it is in a gravitational field (see gravitation). Because it occupies space, all matter has volume and impenetrability, since two objects cannot occupy the same space simultaneously. The special properties of matter, on the other hand, depend on internal structure and thus differ from one form of matter, i.e., one substance, to another. Such properties include ductility, elasticity, hardness, malleability, porosity (ability to permit another substance to flow through it), and tenacity (resistance to being pulled apart). Matter is ordinarily observed in three different states, or phases (see states of matter), although scientists distinguish three additional states. Matter in the solid state has both a definite volume and a definite shape; matter in the liquid state has a definite volume but no definite shape, assuming the shape of whatever container it is placed in; matter in the gaseous state has neither a definite volume nor a definite shape and expands to fill any container. The properties of a plasma, or extremely hot, ionized gas, are sufficiently different from those of a gas at ordinary temperatures for scientists to consider them to be the fourth state of matter. So too are the properties of the Bose-Einstein and fermium condensates, which exist only at temperatures approximating absolute zero (−273.15°C), and they are considered the fifth and sixth states of matter respectively.

I'm very keen to have an accurate and precise definition of "matter" and "mass" for physics. The article on Matter uses the term "substance" which is poorly defined as far as its use for Matter is concerned. Suggestions?

• One question: I understand and accept that matter occupies space, whatever that is, but does matter by definition or experiment have to exhibit mass as suggested in this article?

user bvcrist Bvcrist 19:24, 10 July 2006 (UTC)

[edit] Matter and Energy

"...MATTER AND ENERGY WERE FUNDAMENTALLY SEPARATE TYPES OF MATERIAL." EINSTEIN "SHOWED THAT MASS AND ENERGY WERE INTERCHANGABLE." THERE IS AN IMPLICATION THAT MATTER AND MASS ARE THE SAME. THIS IS CONFUSING AND NEEDS CORRECTING AND EXPLAINING.

This sentence "Matter can more accurately be defined as the energy that has a low vibratory rate, a compressed energy state." is very confusing. Matter is made of protons, neutrons and electrons and these all have very HIGH vibratory rates (Compton frequencies of approx 10^20 to 10^23 Hz). Why does it state "LOW" vibratory rate? It would be more accurate to state that matter is energy travelling at velocity less than c.

This article needs a lot of cleaning up! Dpr 22:12, 5 Mar 2005 (UTC)

I gotta agree with Dpr. "(among which the photon)"... what?

Current the article says this on the topic:

According to the theory of relativity there is no distinction between matter and energy, because matter can be converted to energy (see annihilation), and vice versa (see matter creation).

Which I don't think is a big improvement. —Pengo 10:59, 8 July 2006 (UTC)

[edit] What is Matter

If you take a look at physics, matter is all that is studied by physics. But are photons matter? I am not sure. Photons are: massless, (gauge) bosons. Gravitons and gluons are also massless, but gluons are definately matter. The W and Z gauge bosons are massive, are they thus matter?MarSch 14:40, 18 Mar 2005 (UTC)

it seams that matter fields in QFT (Quantum Field Theory) are all fermion fields and that the bosonic interaction fields are not matter even though they may have mass. Thus weak vector bosons, which acquire mass through Higgs, would not be considered matter. MarSch 12:23, 6 Apr 2005 (UTC)

>> Matter, in the sense of content, is also used in contrast to form.

I love this sentence! It is cryptic, yet at the same time, concise and exact. -c neg

I agree that matter in physics is not easy to define. Nevertheless, I think mass is no longer fundamental for it, especially since modern physics does not postulate mass as an essential characteristic of particles anymore (only as a consequence of some interactions). Does matter appear only after symmetry breakdown through the Higgs mechanism? I think, matter is more general than that, in the same way I think electrons (leptons and fermions) are matter, too. They have much character of wave, but protons, too. Actually, atoms can be seen equally. And neutrinos (fermions), in the Standard Model they do not possess mass. They are fermions (leptons, such as electrons are) and within modern physics, all that is surely matter (or antimatter). Maybe bosons are not matter, bu then are Bose-Einstein condensates not matter? There are atoms which are bosons! What are they, then? Surely, what physics say does not have to be a law, but the frontier between matter and "not-matter" is surely not easy to propose. Maybe, matter should be something as "everything that react to some interactions" (that for the beginning!!)

-N.M.B.R., Mex-KN:132.248.162.7 15:19, 30 September 2005 (UTC)

Without mass, neither electrons nor any other particle would act much like what we call "matter." So if you're going to be real technical, I would say that without the Higgs mechanism (assuming, of course, that it is what causes fermion masses) there would be no matter.

Also, nobody claimed bosons in general aren't matter. As you say, half of all nuclei are bosons, including many of the good ones like common isotopes of carbon and oxygen. What's been claimed is that fundamental bosons aren't matter, because they're force carriers. All this really amounts to is claiming that particles that can't be observed in any way in normal life aren't matter, and neither are photons, which seems fairly reasonable to me.

Maybe what we should really claim is that particles which can be bound permenantly in such a way as to have bulk properties constitute matter...? I'm pretty sure that won't work right either--you're right that this is hard. But it's better to start with one of the definitions I've mentioned than "everything that reacts to some interactions"--because that includes everything that it's possible to investigate scientifically. -- SCZenz 18:36, 30 September 2005 (UTC)

We have another problem, and that is that most of the mass of "matter" is now known to be the gluons and kinetic energy of quarks, in the nucleons. The rest mass of quarks and leptons in ordinary objects are 1% or less of their mass. The rest, we haven't defined as "matter," in this article. So as it stands, we're really suggesting that most of the weight of a lump of ordinary matter, isn't "matter." That's really unsatisfying. We can live with the idea that a small fraction of the mass of "matter" is energy (force bosons, kinetic energy) and not fermions. But almost ALL of it? We need a definition of "matter" which makes *most* of a lump of matter, MATTER. Not "energy."

Maybe we should quit trying to differentiate these particles, and just define matter as invariant mass, and be done with it. We generally do accept the idea of quantitating matter by means of weight and inertia, just as we do with invariant mass, do we not? SBHarris 22:44, 13 September 2006 (UTC)

I can say that Western languages use a bit confusing terms. Many articles interwiki-linked from here (not the English wikipedia, though) explicitly states that only fermions, or "massive" particles consist the matter (I mean similar foreign words with the same etymology). A work of Vladimir Lenin was mentioned at the top of this article, but Lenin used the term ru:Материя materia, which refers both to fermions and bosons, as generally accepted in modern Russian language. Interwiki from here points to another Russian word ru:Вещество, literally meaning what the things consist, used to denote only fermionic part of materia, as well as a chemical substance. In philosophy there are no difference between Russian materia and Western variants of this word. But it would be incorrect to translate the word matter in a physical article to Russian: Материя in most cases. гык 20:27, 2 November 2006 (UTC)

[edit] Matter in role playing

Doesn't this addition seem a little bit too far-fetched for this article? Karol 09:01, July 31, 2005 (UTC)

Non necessarily, tho' it wasn't put in the right way. The article is "Matter", not "Matter (physics)", and "Matter (disambiguation)" does not exist. Many Wikipedia articles on words with many meanings but one of them very minor have at least a note explaining that another possible meaning exists.--Army1987 19:41, 15 August 2005 (UTC)

Well, we badly need a "Matter (disambiguation)" page, then. I've begun one. Feel free to expand. SBHarris 23:00, 13 September 2006 (UTC)

Yes, but a fictional version of matter that exists (as one of nine spheres of magic) in a particular roleplaying game? How many different articles are you going to add little notes to, to cover all the spheres of influence? Doesn't there have to be a limit somewhere? It's not reasonable to write an article about what matter actually is without calling it Matter (physics)?? -- SCZenz 04:49, 16 August 2005 (UTC)

Yeah, but many minor meanings of words which don't deserve an article themselves have a Template:dablink note in the article for the main meaning of the word. For example, nobody would expect to find stuff about the program Eye Drops in the article for eye drop (singular and lowercase d, but nevertheless the latter has a dablink template note too.--Army1987 09:15, 16 August 2005 (UTC)

However, I may agree that this is not the place for details. They should be moved to the article for the game, however, since I've never played it, I'll simply delete the details here and add a stub note to the article for the game, leaving others to expand it.--Army1987 09:28, 16 August 2005 (UTC)

[edit] expert-expansion-sources

this article needs to be: more detailed (and hey, an image or two there is a lot of matter out there), more sourced (you know, like ANY), and an expert needs to go through and articulate the nitty-gritty. this is an article on MATTER in an ENCYCLOPEDIA. it's the least we can do. (wow, i sound kind of bitter posting this). JoeSmack ^Talk 15:52, 13 September 2006 (UTC)

(Before I say this I want to be clear that it's not sarcastic, nor do I mean to discount the other things you mentioned.) What pictures would you choose to represent matter, given that a picture of absolutely anything would qualify? --Strait 18:30, 13 September 2006 (UTC)

The trouble is, who's an expert? I'm not sure the way a physicist would define "matter" exactly fits common usage, and since it's such an imprecise and general word I'm not sure all physicists would agree anyway. -- SCZenz 20:14, 13 September 2006 (UTC)

I understand why you added {sources} and {expert}, but I disagree about {expand}. Matter is a very general, vauge topic. All of the specifics should be covered in the pages about specific types of matter, I think. Can you name anything (besides images) that you'd like to see discussed here? --Strait 23:59, 13 September 2006 (UTC)

By: Brian Santos

[edit] Lenin An Authority on Physics?

I'm confused about the prominent quote by Lenin in the first paragraph of this article. He was a politician, not a physicist. What reason is there to use his working definition of matter? Why not a quote from John Dalton or Mendeleev or someone else with actual scientific credentials? --Robigus 04:50, 9 November 2006 (UTC)

Someone keeps adding that crap. I have removed it again. --Strait 05:07, 9 November 2006 (UTC)