What is the name of the biographer and one-time student of this British physicist and mathematician who discovered the Taylor–Proudman theorem along with Joseph Proudman?
Taylor–Proudman theorem: In fluid mechanics, the Taylor–Proudman theorem (after Geoffrey Ingram Taylor and Joseph Proudman) states that when a solid body is moved slowly within a fluid that is steadily rotated with a high angular velocity formula_1, the fluid velocity will be uniform along any line parallel to the axis of rotation. G. I. Taylor: Sir Geoffrey Ingram Taylor OM (7 March 1886 – 27 June 1975) was a British physicist and mathematician, and a major figure in fluid dynamics and wave theory. G. I. Taylor:  His biographer and one-time student, George Batchelor, described him as "one of the most notable scientists of this (the 20th) century".
George Batchelor