Robin Fåhræus

Robert (Robin) Sanno Fåhræus (15 October 1888 – 18 September 1968) was a Swedish medical researcher noted for his contributions to hemorheology.

[1] Fåhræus was the son of art historian Klas Fåhraeus and actress Olga Björkegren.

[2] He commenced studies at Karolinska Institute in 1908, where he received his medical license in 1922.

After Fåhræus had received his position at the Karolinska Institute in 1922, he sought contact with professor Theodor Svedberg in Uppsala and suggested that the recently built ultracentrifuge should be used to determine the molecular mass of hemoglobin.

In 1931 he and co-worker Torsten Lindqvist described the Fåhræus–Lindqvist effect, the change of the viscosity of blood with the diameter of the tube it travels through.