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The Greenspan acoustic viscometer, first investigated by M. Greenspan and F. N. Wimenitz in 1953, is a relatively compact and robust device for...



= Encyclopedia Article; = Research Update
Figure 1.Simplified Greenspan viscometer. (a) Perspective view. (End plates, acoustic transducers, and fill capillary are omitted.) (b) Cross-sectional view. The size of the fill capillary is exaggerated for clarity.
From update 'Acoustic viscometer'
Figure 2.Resonance profile.
From update 'Acoustic viscometer'