How Was the Antimatter Counterpart of the Electron Discovered?
In 1932 Carl Anderson discovered the positron, which is the antiparticle of the electron. Carl Anderson built a cloud chamber, his goal was to know the composition of cosmic rays (Cosmic rays are high-energy radiation that can produce secondary particles when they meet the earth's atmosphere). So Anderson placed a magnet, to know the charge of particles that passes in, and he placed a lead plate to slow down the particle that passes through, so he was able to take a photograph of the tracks taken by cosmic ray particles. The curve of the trajectory indicated that the particle was positively charged, but it was less massive than a proton, it is positively charged but it cannot be a proton, so what is that particle? Physicists thought they discovered a new particle, a positively charged electron, and gave it the name "positron" (for positive electron). When Anderson realized that the positron is the same as an electron but with opposite charge, he knew it was an antiparticle, which Paul Dirac had predicted in 1931.
The positron was the first experimental evidence of the existence of antimatter, and later on, Carl Anderson won the Nobel Prize for Physics in 1936 for his discovery.
This is the cloud chamber photograph by Carl Anderson of the first positron ever detected.
With mass and spin both were same as like electron. Because of opposite charge it become the positive electron. One more thing, In your post you didn't share about your reference link. Where did you get all of these information?
A couple of books, mostly from Biographical Memoirs: Volume 73 (1998), chapter Carl David Anderson BY WILLIAM H. PICKERING.
share this at the end of the post. It will help the readers.
Thank you for the suggestion, I will make sure to do this in my upcoming posts!
You have been upvoted by @tarpan A Country Representative, we are voting with the Steemit Community Curator @steemcurator07 account to support the newcomers coming into steemit.
Follow @steemitblog for the latest update. You can also check out this link which provides the name of the existing community according to specialized subject
There are also various contest is going on in steemit, You just have to enter in this link and then you will find all the contest link, I hope you will also get some interest,
For general information about what is happening on Steem follow @steemitblog.