Figure 6.

(a) The variation of the rotational drag coefficient ζ with ρ for a prolate ellipsoid with equatorial radius of length 1 µm. The solid line represents the rotational drag coefficient for rotation in the equatorial semi-principal axis, while the dashed line shows the rotational drag coefficient for a sphere of equivalent volume. (b) The variation of the rotational diffusion coefficient for rotation in the equatorial semi-principal axis with ρ for a prolate ellipsoid of fixed volume. The radius of the equivalent sphere is 0.75 µm in the case of the dashed-dotted line, and 1 µm in the case of the dotted line.