conserveation of matter

ben89 · Feb 2, 2006

Benny visitin u another question with eagerness hellos 2 all the posters i"m keepin it breef and real asked this in a thread somwhere but no1 ansered n would really like 2 know if particle n antiparticel were being created n destroyd all the time in the early unvierse how come nuthin can be created n destroyed now/ what changed?

yevaud · Feb 2, 2006

Well, that's not exactly what was happening. You have heard that matter can't be either created or destroyed - only converted into energy (and vice-versa). This is true. What was happening in the very early universe was that matter and energy were swirling around, a thick, hot soup - matter was constantly being formed and annihilated, far faster and in vastly greater amounts than we see today in our now formed universe and it's processes. But as time went on and the universe continued to expand, it cooled, and so matter became, if you will, "stable." But the original energy/mass of the universe is the same now as it was just after being created - just spread out over a hugely larger amount of volume and in a much much cooler environment. <div class="Discussion_UserSignature"> Differential Diagnosis: "I am both amused and annoyed that you think I should be less stubborn than you are." </div>

ben89 · Feb 2, 2006

thank u Yevaud i think i understand tho i"m not sure if i do/ the soup is that what formd n annihalated matter? so if the universe is not cool now then its still posible 2 create n destroy matter? so it is posible?

yevaud · Feb 2, 2006

Of course, in the sense of it being changed from matter into energy, and vice-versa. But if it were possible to count and weigh and tally every last scrap of matter and energy present in our universe today, you'd find it was exactly the same as it was after the creation of the universe. See, matter can be converted into energy; you know this from Nuclear reactors and Bombs. Coversely, we can see a Supernova torch off, and see present later numerous forms of matter that were created in the intense fireball of the explosion. But it's really all just converting one into the other. Nothing "new" is created. When the universe was very young, it was much much smaller. And it was terribly hot - so hot that it was difficult for matter to form and remain so, so in that early soup of "stuff," matter was forming, falling apart, over and over again. But the universe expanded, and that same amount of energy and matter now had a lot more room to spread out in. So everything cooled off, and continued to do so. Today, we can detect the 2.7 K CMBR (Cosmic Microwave Background Radiation), which is the "glow" remaining fom that beginning, just like you can see a faint glow of heat from coals that was once a raging fire. That what you needed to know? <div class="Discussion_UserSignature"> Differential Diagnosis: "I am both amused and annoyed that you think I should be less stubborn than you are." </div>

ben89 · Feb 2, 2006

i guess what i"m havin a problem wiht mr Yevaud is the word annihalated/ if its annihalated then its gone (4 good n 4ever i must say) but i guess what ur sayin is its not annihalated afterall but actualy converted now my questin/ if everythin was just converted how come theres more matter now than antimatter/ shouldnt there be equal antimatter? looks like a lot of the antistuff were destroyd / so it is possible 2 destroy not just convert??? am i worng?

yevaud · Feb 2, 2006

It's believed that when matter was created in the Big Bang, that matter was present in slightly higher amounts than antimatter, so we ended up as we see it today. All of the original antimatter was anniilated and what remained was raw energy - which could then be converted into matter or remain energy, as the case may be. And no - what happens when matter and an equal amount of antimatter meet, both disappear into a burst of energy. Light, gamma rays, and so on. And that's energy. <div class="Discussion_UserSignature"> Differential Diagnosis: "I am both amused and annoyed that you think I should be less stubborn than you are." </div>

ben89 · Feb 2, 2006

but how could there be "sligthly higher' amounts of matter mr Yevaud? dont all matter have an antimatter/ some r missin theres? how come/ i"m gettin furstrated again

yevaud · Feb 2, 2006

Well, there's no reason why the entire universe couldn't have equally been comprised of all antimatter just as much as matter. But it's believed that when the Big Bang took place, there may have been (these amounts are for informative purposes only, not saying this was precisely the case) 101 particles of normal matter for every 100 of antimatter. We can tell this by the fact that there is virtually no antimatter just floating around, no matter where we look in the universe. <div class="Discussion_UserSignature"> Differential Diagnosis: "I am both amused and annoyed that you think I should be less stubborn than you are." </div>

ben89 · Feb 2, 2006

thank u anyway mr Yevaud. tho i dont get how the 101th particle didnt have its mirror. its especial i guess n the fact that there r no antimatter dont that speek 4 there destruction? or dont it speak 4 there converting to energy?

Saiph · Feb 2, 2006

well..if you're confused why there would be slightly more matter than antimatter...you aren't the only one. It's a big goal of particle physics to figure out what went on there. <div class="Discussion_UserSignature"> --------------------SaiphMOD@gmail.com -------------------"This is my Timey Wimey Detector. Goes "bing" when there's stuff. It also fries eggs at 30 paces, wether you want it to or not actually. I've learned to stay away from hens: It's not pretty when they blow" -- The Tenth Doctor, "Blink" </div>

ben89 · Feb 2, 2006

mr Saiph thank u yes i"m confused/ where have all the antimatter went? were they destroyd or converted please i want 2 know? were the matter more strong thats why there still around n the antis were punys? please i need 2 know

Saiph · Feb 2, 2006

well, it's thought that the big bang created lots of both matter, and antimatter (well, it created lots of energy, which "cooled" into matter and antimatter). However, the creation wasn't completely even. Slightly more matter than antimatter was created (why? Not sure, it's being looked into. We have observations of this happening though...but even then we don't have observations of "strong" enough events). Shortly, the matter and antimatter collide to go BOOM!, but since there is more matter than antimatter...some matter is left (but no anti-matter, it's all used up). So what we see (and what we're made up of) is what's left of the original matter. <div class="Discussion_UserSignature"> --------------------SaiphMOD@gmail.com -------------------"This is my Timey Wimey Detector. Goes "bing" when there's stuff. It also fries eggs at 30 paces, wether you want it to or not actually. I've learned to stay away from hens: It's not pretty when they blow" -- The Tenth Doctor, "Blink" </div>

jschaef5 · Feb 3, 2006

maybe theres multiple forms of anitmatter and they reside in different dimesions, did you physics guys think of that yet? <img src="/images/icons/wink.gif" /> Whats with the whole matter/anitmatter deal regarding black hole event horizons and hawkings radiation. I remember reading something about how they weaken a blackhole? I just can't remember how anti matter and matter play into this. <div class="Discussion_UserSignature"> </div>

ben89 · Feb 3, 2006

mr Saiph thank u but aint matter created with a oposite antimatter so thats where i"m stuck/ how could there be more matter/ sho dont make sence 2 me right now

Saiph · Feb 3, 2006

Matter and anti-matter are related to hawking radiation through virtual particles. When a virtual particle pops up near the event horizon, it is possible for one of the particles to be drawn in, and the other escape. If this happens, the pair don't annihilate, and the BH effectively "created" a particle by ripping them apart. <div class="Discussion_UserSignature"> --------------------SaiphMOD@gmail.com -------------------"This is my Timey Wimey Detector. Goes "bing" when there's stuff. It also fries eggs at 30 paces, wether you want it to or not actually. I've learned to stay away from hens: It's not pretty when they blow" -- The Tenth Doctor, "Blink" </div>

Saiph · Feb 3, 2006

matter is normally created with anti-matter. However, we have observed (actually seen this happen) that every now and then, for some rarer particles, more matter than anti-matter is made (just barely,and only in "rare' particles...we haven't seen it with protons yet). if you want the full term so you can look it up yourself it's called "CP violation" <div class="Discussion_UserSignature"> --------------------SaiphMOD@gmail.com -------------------"This is my Timey Wimey Detector. Goes "bing" when there's stuff. It also fries eggs at 30 paces, wether you want it to or not actually. I've learned to stay away from hens: It's not pretty when they blow" -- The Tenth Doctor, "Blink" </div>

ben89 · Feb 3, 2006

thankx mr Saiph i didnt know u 'actually seen this happen' i"m glad 2 know cuz this is proof/ sho will look up cd violation cuz i like 2 learn new exciting stuff i like 2 ask questins

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