div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imageimg data-url=the-understanding-of-relativity-57988c3838f0chtmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: The Understanding of Relativity loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader031vdocumentinreader031viewer2022020522575067c51a28ab0f07ad11dehtml5thumbnails1jpg width=140 height=200 divp© 1929 Nature Publishing Grouppdiv