[2] Shortly after, in 1931, it was reported independently by the Swedish scientists Robin Fåhræus and Torsten Lindqvist, after whom the effect is commonly named.
Robert (Robin) Sanno Fåhræus was a Swedish pathologist and hematologist, born on October 15, 1888, in Stockholm.
[3] Fåhræus and Lindqvist published their article in the American Journal of Physiology in 1931 describing the effect.
Capillary diameters were less than 250 μm, and experiments were conducted at sufficiently high shear rates (≥100 1/s) so that a similar flow in a large tube would be effectively Newtonian.
will depend on the fluid being tested, the capillary diameter, and the flow rate (or pressure drop).
[6] Because the cell-free layer is very thin (approximately 3 μm) this effect is insignificant in capillaries whose diameter is large.
This explanation, while accurate, is ultimately unsatisfying, since it fails to answer the fundamental question of why a plasma cell-free layer exists.