Hagenbach was the first who called this law the Poiseuille 's law .
The theoretical derivation of a slightly different form of the law was made independently by Wiedman in 1856 and Neumann and E. Hagenbach in 1858 ( 1859 , 1860 ) .
E. Hagenbach was the E. Hagenbach who called this law the Poiseuille 's law .
The theoretical derivation of a slightly different form of the law was made independently by Wiedman in 1856 and Neumann and E. Hagenbach in 1858 ( 1859 , 1860 ) .