i've read in the 'angels & demons' book by Dan Brown & there's something in the book says about 'antimatter'.

Question

do u know what's antimatter?if u do,is it real(exists)?

Answer 1

It is most real and most dangerous. It consists of "antiparticles" which have the same mass as "normal" particles but the oposite charge (so "positroins" have a positive charge but electrons have a negative charge). Antimatter can be created in particle accelerators. But it's difficult.



Antimatter will react with normal matter and convert the entirety of their combined mass into energy. To put that inot perspective, that means that one gram could take out the better part of the city if it was released in air. It shows up in sci-fi as wepaonary quite a lot. But it's real.

Answer 2

In particle physics, antimatter extends the concept of the antiparticle to matter, whereby antimatter is composed of antiparticles in the same way that normal matter is composed of particles. For example an antielectron (positron) and an antiproton could form an antihydrogen atom in the same way that an electron and a proton form a normal matter hydrogen atom. Furthermore, mixing of matter and antimatter would lead to the annihilation of both in the same way that mixing of antiparticles and particles does, thus giving rise to high-energy photons (gamma rays) or other particle–antiparticle pairs. The particles resulting from matter-antimatter annihilation are endowed with energy equal to the difference between the rest mass of the products of the annihilation and the rest mass of the original matter-antimatter pair, which is often quite large.



Antimatter is not found naturally on Earth, except very briefly in small quantities (as the result of radioactive decay or cosmic rays). This is because antimatter which comes to exist on Earth outside the confines of a suitably equipped physics laboratory would inevitably come into contact with the ordinary matter that Earth is made of, and be annihilated. Antiparticles and some stable antimatter (such as antihydrogen) can be made in minuscule amounts, but not in enough quantity to do more than test a few of its theoretical properties.



There is considerable speculation both in science and science fiction as to why the observable universe is apparently almost entirely matter, whether other places are almost entirely antimatter instead, and what might be possible if antimatter could be harnessed, but at this time the apparent asymmetry of matter and antimatter in the visible universe is one of the greatest unsolved problems in physics. Possible processes by which it came about are explored in more detail under baryogenesis.

Answer 3

It's the opposite of matter. If an electron has a negative charge then an anti electron has the opposite charge.



Very little antimatter exists on earth because the earth is composed of matter and antimatter has the exact opposite charge of matter, they cancel each other out Its like -1+1=0

Answer 4

Yeah sure, anti-matter sure do exist. One of the earliest found and most common is the positron.



The positron is the electron's anti-matter (if I could put it that way). It has the same size (mass and diameter) as an electron, but has a positive charge (whereas an electron has negative charge). If it meets an electron with opposite spin, they annihilate each other and energy is given off.



You probably don't know about spin, so I'll just give a simplified explanation. An electron can spin one way or the other. (In physics we call it +1/2 and -1/2, but we won't bother about why 1/2.) We can say it spins clockwise or counter clockwise. So, if an electron with spin of +1/2 meets a positron with spin of -1/2, they just wipe each other out with a burst of energy. Cool huh? Actually been done.



So yeah, anti-matter does exist. They are not the stuff of science fiction like many tend to believe. There are many other anti-matter (other than the positron, that is). In fact, scientists believe that there is more anti-matter in the universe than there is matter. Why doesn't anti-matter just wipe out matter? Well, the universe and space is a very very large place, and those two seldom meet. And even if they do meet, it's not like tons and tons do it at the same time and make a big bang. So yeah, they do meet, but their collisions don't result in some major catastrophe like the end of the universe or anything like that, heheh.

Answer 5

Antimatter is the opposite of matter i.e, it is matter which consists of antiparticles, elementary particles of ordinary matter(proton or electron) but with an opposite charge.eg-anti-proton has negative charge while a proton has positive charge.

when antimatter combines with matter they are destroyed releasing energy.

yes,scientists have been able to create antimatter, but the process of creation is extremely complicated and costly. The amount created at present when combined with matter would release only as much energy as a match-head.

Answer 6

Antimatter is the exact opposite of matter, or I call it posimatter or negamatter. It does exist, but in science there is no possible way to explain it. If explained in the terms of the occult, it is whats left of a curse, when the cursed person dies.

Answer 7

there're people looking for antimatter in outter space.

it's like (-2)+2=0

so,

antimatter+matter = nothing

this is my theory, but take a look at the answer from wikipedia, i think that's more accurate

Answer 8

I don't think it exists. But that is a good book.