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. 2017 Sep 8;3(9):e1701558. doi: 10.1126/sciadv.1701558

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Copyright © 2017 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).

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Fig. 5 — Variation of the sphere-in-cavity velocity U with sphere diameter D_S and the sphere-to-fluid density ratio ρ_S/ρ. The dotted line is a linear best fit to the data that resulted in Eq. 4.