div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imageimg data-url=photo-electric-measurements-of-the-density-of-tracks-in-nuclear-emulsionshtmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: Photo-electric Measurements of the Density of Tracks in Nuclear Emulsions loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader031vdocumentsmxreader031viewer2022020522575067f81a28ab0f07adfd03html5thumbnails1jpg width=140 height=200 divp© 1950 Nature Publishing Grouppdiv