div class=ts-pagebuttonPage 1button div class=ts-image amp-img class=ts-thumb alt=Page 1: A Cosmic Cyclotron as a Cosmic Ray Generator src=https:reader038vdocumentinreader038viewer2022100502575067d71a28ab0f07ad66dfhtml5thumbnails1jpg width=142 height=106 layout=responsive amp-img divp© 1936 Nature Publishing Grouppdiv