CXII. Current-noise in semi-conductors : A re-examination of Bernamont's data

Abstract

In 1937 Bernamont published the results of his experiments showing that the current-noise in certain thin metal films varied approximately as the inverse of the frequency over the range 96 to 162 000 c/s. The text of his paper shows, however, that he omitted to allow for the presence of Johnson noise when the steady current was reduced to zero. After correcting for this, and making another adjustment necessary to make the results physically possible, the noise from his resistor ‘ B ’ shows a close inverse-frequency law for all current densities, whereas Bernamont found an inverse power of the frequency varying between 0·883 and 0·983 for different values of current.