Abstract
IN the article to which Dr. Saffman refers1, it was stated that tests in 1958 using horizontal disks showed a decrease of about 40 per cent in the viscosity of air when dust was suspended in it at a concentration of about 0.25 kgm./m.3. Subsequent tests in 1960 using vertical cylinders yielded the same result, within experimental error.
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Sproull, W. T., Nature, 190, 976 (1961).
Waggener, J. P., Nucleonics, 19, 145 (1961).
Broughton, G., and Windebank, C. S., Indust. and Eng. Chem., 30, 407 (1938).
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SPROULL, W. Flow of a Dusty Gas between Rotating Cylinders. Nature 193, 464 (1962). https://doi.org/10.1038/193464a0
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DOI: https://doi.org/10.1038/193464a0
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