4 ms·
Summary for this work in layman terms: https://www.osti.gov/accomplishments/anderson.html https://www.osti.gov/accomplishments/anderson.html The positive elec
by kmichaels 10y ago
Summary for this work in layman terms:
https://www.osti.gov/accomplishments/anderson.html https://www.osti.gov/accomplishments/anderson.html
The positive electron (positron) appears to have been the first anti-particle identified.
- jessriedel 10y agoYea. Positive and negative muons and pions were found after WWII. The anti-proton wasn't discovered until 1955 following the construction of the Bevatron, an accelerator powerful enough to reach the proton/anti-proton rest mass of ~1 GeV (i.e., a Billion eV). https://en.wikipedia.org/wiki/Bevatron https://en.wikipedia.org/wiki/Bevatron
- PaulHoule 10y agoThere are positrons passing through the room you are in right now...
- hossbeast 10y agoSome of us occasionally do go outside
- Dylan16807 10y agoIf you're taking that as an insult, I think implying that you use HN outdoors just makes it worse.
- bbcbasic 10y agoYep need to take out the trash. There needs to be a service for that.
- winter_blue 10y agoAnti-particles and particles instantly annihilate each other on contact, so anti-particles cannot not exist in our world besides for brief moments. There's a theory that half of the universe is made of anti-particles (and the other half composed of regular particles). So you could say that the half we inhibit has few anti-particles in it. See: https://en.wikipedia.org/wiki/Annihilation https://en.wikipedia.org/wiki/Annihilation
- averagewall 10y agoThey're also created all the time by radioactive decay which happens in common building materials. So yes, they'll be flying around your room now, but not going much further than that.