div class=trans-pagebuttonPage 1button div class=trans-image amp-img class=trans-thumb alt=Page 1: Philosophical Magazine 1914–1923 src=https:reader031fdocumentsusreader031viewer2022020522575067bd1a28ab0f07acecf1html5thumbnails1jpg width=142 height=106 layout=responsive amp-img divp© 1924 Nature Publishing Grouppdiv