New source of illumination
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Article
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1952
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Elsevier Science
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English
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Ultrasonic Viscosimeter.--Rich-Roth Laboratories, East Hartford, Conn., announces the "Ultra-Viscoson" for continuous, automatic viscosity measurement using ultrasonics. Hermetically sealed probe, the size of a fountain pen, has no moving parts, operates to 650 F., 10,000 atmospheres pressure, is in