From NobelPrize https://twitter.com/NobelPrize on Twitter: In developing quantum mechanical theory, physicist Paul Dirac, born #OTD, predicted that all matter has a kind of mirror image - antimatter. Dirac's theory would later be proved experimentally. He was awarded the Nobel Prize in 1933 which he shared with Erwin Schrodinger. https://twitter.com/NobelPrize/status/1159345255101227008/photo/1 https://chirp.cooleysekula.net/attachment/60251