We may here notice another of those large configurations which are of great assistance in the study of the stars.
"The Story of the Heavens"
Robert Stawell Ball
A difficulty which, except in cases of unusual mental power, long practice can alone remove, and removes chiefly by rendering us familiar with all the configurations consistent with the general conditions of the theorem.
"A System Of Logic, Ratiocinative And Inductive (Vol. 1 of 2)"
John Stuart Mill
He makes little effort to investigate the effect of any design parameters, but presents some odd conductor configurations that involve unimportant variations of the basic principle.
"The Earliest Electromagnetic Instruments"
Robert A. Chipman