From JLab_News https://twitter.com/JLab_News on Twitter: Born #OTD 95 years ago in 1924, Cesar Lattes discovered the pion a particle made up of a quark and an antiquark along with Cecil Powell and Guiseppe Occhialini. #science #history #TBT https://twitter.com/JLab_News/status/1149301085183598593/photo/1 https://chirp.cooleysekula.net/attachment/59507