Does it really exist?
2006-09-08 15:18:54 · 8 answers · asked by C. T 3 in Science & Mathematics ➔ Chemistry
Yes.
Although probably not in bulk quantity. Anti-particles are actually supposed to appear all the time alongside with a matching particle, due to quantum fluctuation. This is what led Stephen Hawkins to conclude that black hole should eventually evaporate as some member of a pair might fall in the black hole while the other does not, and the black hole is thus a net source of particle.
Antiparticles are created in particle accelerator, where subatomic particles are accelerated to relativistic speed before being slammed into a target. The energy released creates exotic particles, among them anti-particles. A positron is just like an electron but with a positive charge. And anti-proton is just like a proton, but with a negative charge.
The quantities created in those laboratories are however vanishingly small, and those are quick to react with normal matter.
2006-09-08 15:21:14 · answer #1 · answered by Vincent G 7 · 1⤊ 0⤋
Yes. 100% positive. There is no doubt.
It is more common then some of the above answers make it sound.
Have you ever heard of a PET (positron emission tomography) scan? This technology uses positrons (the anti matter equivalent of the electron) created in natural radioactive decay of isotopes such as C-11 or O-15.
2006-09-08 16:01:18 · answer #2 · answered by sparrowhawk 4 · 0⤊ 0⤋
it exists, commonly as anti-neutrinos since they are formed when atoms decay and do not get annihilated easily. antimatter is formed by manipulating different elementary particles to get the desired result
2006-09-08 15:21:52 · answer #3 · answered by fomalhaut 2 · 0⤊ 0⤋
anti-matter is found in a few pockets of the universe. it is mostly found in black holes &
pulsars . scientists have been able to create some under extreme conditions . it is found in very little quantities '''coz it immediately reacts with matter forming pure energy
2006-09-08 15:24:33 · answer #4 · answered by sandhyavandanam s 2 · 0⤊ 0⤋
Hi. Sure. It has been produced in the lab as anti-hydrogen. Positron around and anti-proton.
2006-09-08 15:21:41 · answer #5 · answered by Cirric 7 · 0⤊ 0⤋
Off course, or what do you think that happens when you expose an atom nuclei to gamma rays: you get a positron and an electron!!!
2006-09-08 15:33:18 · answer #6 · answered by Chemielieber 3 · 0⤊ 1⤋
Yes, but I can't explain as well as Vincent G did. Give him the thumbs up.
2006-09-08 15:39:13 · answer #7 · answered by Scott S 4 · 0⤊ 0⤋
yes, but it is very rare
2006-09-08 17:30:49 · answer #8 · answered by arifin ceper 4 · 0⤊ 0⤋