https://joy.videvo.net/videvo_files/video/free/2020-04/large_watermarked/200401_Microscope%205_02_preview.mp4 Light Element of Microscope During Operation Blur-in to focus on the light element (field diaphragm) of a microscope. biochemistrybiologychemistryinstrumentlablaboratorymicroscopepharmapharmaceuticalsresearchsamplesamplessciencescientificscientisttechnician