What Are Positrons and Antiprotons, and Where Are They Found?

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Discussion Overview

The discussion revolves around the nature of positrons and antiprotons, their existence, and their properties, including their interactions with matter and potential formation of antimatter structures. It encompasses theoretical concepts, experimental evidence, and speculative ideas related to antimatter.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • Positrons and antiprotons are described as the antiparticles of electrons and protons, respectively, with their presence primarily in particle accelerator laboratories.
  • Some participants express curiosity about the theoretical existence of antimatter, questioning whether it is proven and how it relates to known elements.
  • There is speculation about the existence of anti-hydrogen and anti-helium, with references to experimental evidence supporting the production of anti-hydrogen.
  • Participants discuss the interactions of antimatter, suggesting that friction would behave similarly for antimatter as it does for matter, but caution against contact between antimatter and matter.
  • One participant notes that while electromagnetic, strong, and gravitational interactions do not differentiate between matter and antimatter, the weak nuclear force does, contributing to the predominance of matter in the universe.
  • There is a suggestion that planets made of antimatter could theoretically exist, but their formation would be unlikely due to the dominance of matter in the universe.
  • Anti-Protonic Helium is mentioned, where an anti-proton replaces a valence electron, indicating ongoing exploration of antimatter structures.

Areas of Agreement / Disagreement

Participants express a mix of curiosity and uncertainty regarding the existence and properties of antimatter, with some points of agreement on the nature of interactions but no consensus on the implications or rules governing antimatter.

Contextual Notes

The discussion includes speculative questions about the nature of antimatter and its interactions, with some assumptions about the conditions under which antimatter could exist and form structures remaining unresolved.

balrog
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Quick question, I'm no good with anti-stuff. What are positrons and what are antiprotons and where could you find them?
 
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They are the anti-particles of the electron and proton, respectively. You can find them generally nowhere but at particle accelerator laboratories.

- Warren
 
So they ARE proven, and not just theoretical? You know... cause I've never seen either... lol

So then Anti-matter would have Positrons instead of electrons and anti-protons instead of protons, would neutrons be found in both? or?

Concerning this, would you have all the same elements except... anti. You know like: anti-hydrogens and anti-heliums... are there any rules?

Oh, and how would friction work with anti-matter? Would anti-matter only respond to gravity or what? Theoretically, would you end up commits, even planets made up of anti-matter?

I'm really not into physics, but I'm just sort of interested.
 
Anti-hydrogen has already been produced, at least according to the experimental evidence.

Friction would work the same way for antimatter as it does for matter -- but don't put an antimatter book down on a matter table!

Antimatter follows the same rules as matter as far as its interactions are concerned. Anti-electrons are charged and interact gravitationally and via the weak nuclear and electromagnetic forces, for example, just like electrons. The only difference is the electric charge.

- Warren
 
The EM, strong and gravitational interactions don't differentiate between matter and antimatter. While the charges would be reversed, it would not matter if all other charges are also reversed. One could live in an antimatter world and not know it if those were the only interactions. The weak nuclear force allows them to be differentiated. The difference is minute, but it can account for the observation that the known universe is predominantly composed of regular matter (positive protons and negative electrons).
 
balrog said:
Theoretically, would you end up commits, even planets made up of anti-matter?

In fact, the only thing making such objects unlikely is the dominance of matter in the universe. A planet made of antimatter could form, if it formed in some place where it never came into contact with normal matter.
 
chroot said:
Anti-hydrogen has already been produced, at least according to the experimental evidence.

- Warren

Also Anti-Protonic Helium, they took out one valence electron and stuck in a anti-proton. He++
 

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