Abstract
ELFORD1 has developed a method of particle size determination by centrifuging solutions in inverted capillaries. The sedimentation within the capillaries fulfils Stokes's law, that is, there is a uniform movement of the particles until the boundary approaches the lower open end of the capillary. At this point the boundary comes in contact with disturbing effects such as vibrations and heat convection currents in the outer fluid. These effects tend to reduce the true rate of sedimentation.
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References
"Handbuch der Virusforschung". Erste Hälfte. Doerr und Hallauer . Wien, Julius Springer, p. 195 (1938).
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POLSON, A. A New Capillary Cell for Measuring the Rate of Sedimentation of Virus Particles in a Centrifugal Field. Nature 148, 593–594 (1941). https://doi.org/10.1038/148593b0
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DOI: https://doi.org/10.1038/148593b0
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