On Thomson's Method for the Measurement of Galvanometer Resistance

Abstract

The author treated the sensitiveness of Thomson's method for the measurement of galvanometer Resistance. And it was concluded that the best condition can be obtained when
(a) Q: S is as small as possible,
(b) P: Q is as large as possible,
the resistance of the battery circuit being independent on the sensitiveness. (See: -Figure 3)
And the method was compared with Wheatstone Bridge Method, which, if the current thro' the galvanometer under test be limited as well as the former, is not always superior to the former.