This was balanced by a potentiometer arrangement, so that the galvanometer spot came to zero.
"Response in the Living and Non-Living"
Jagadis Chunder Bose
By disturbing the balance of the potentiometer, the galvanometer deflection due to a known increase of E.M.F. was found from which the absolute E.M. variation caused by disturbance of copper or zinc was determined.
"Response in the Living and Non-Living"
Jagadis Chunder Bose
By means of a potentiometer the galvanometer spot may be brought back to the original position.
"Response in the Living and Non-Living"
Jagadis Chunder Bose