div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imageimg data-url=spectra-of-the-helium-glow-dischargehtmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: Spectra of the Helium Glow Discharge loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader036vdocumentsusreader036viewer2022081206575067c91a28ab0f07ad23cdhtml5thumbnails1jpg width=140 height=200 divdiv