Word: glimmered
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Dates: during 1950-1950
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...Barer focuses the invisible image, enlarged with a reflecting microscope to about three inches in diameter, on a screen. Then, by means of a rapidly revolving mirror, he "scans"' the image, throwing the ultraviolet light from a narrow slice of it into a photomultiplier tube. The faint glimmer of ultraviolet is thus changed into a fluctuating electric current that is powerful enough to form a bright curve on the face of a cathode-ray tube...