div class=trans-pagebutton class=gotoPage data-page=1Page 1button div class=trans-imagea href=https:reader042fdocumentsusreader042viewer20220312035bbc8b7b09d3f259438b9613html5page1jpg target=_blank img data-url=document-grating-was-focused-on-a-photo-graphic-plate-and-recorded-the-relative-positionhtmlpage=1 data-page=1 class=trans-thumb lazyload alt=Page 1: €¦ · grating was focused on a photo- graphic plate and recorded The relative position of the spectrum lines on the plate indicates their relative wavelength and any dis- loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader042fdocumentsusreader042viewer20220312035bbc8b7b09d3f259438b9613html5thumbnails1jpg width=140 height=200 adivdivdiv class=trans-pagebutton class=gotoPage data-page=2Page 2button div class=trans-imagea href=https:reader042fdocumentsusreader042viewer20220312035bbc8b7b09d3f259438b9613html5page2jpg target=_blank img data-url=document-grating-was-focused-on-a-photo-graphic-plate-and-recorded-the-relative-positionhtmlpage=2 data-page=2 class=trans-thumb lazyload alt=Page 2: €¦ · grating was focused on a photo- graphic plate and recorded The relative position of the spectrum lines on the plate indicates their relative wavelength and any dis- loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader042fdocumentsusreader042viewer20220312035bbc8b7b09d3f259438b9613html5thumbnails2jpg width=140 height=200 adivdivdiv class=trans-pagebutton class=gotoPage data-page=3Page 3button div class=trans-imagea href=https:reader042fdocumentsusreader042viewer20220312035bbc8b7b09d3f259438b9613html5page3jpg target=_blank img data-url=document-grating-was-focused-on-a-photo-graphic-plate-and-recorded-the-relative-positionhtmlpage=3 data-page=3 class=trans-thumb lazyload alt=Page 3: €¦ · grating was focused on a photo-...