RT Journal Article SR Electronic T1 On the measurement of rapidly alternating electric currents with the galvanometer JF American Journal of Science JO Am J Sci FD American Journal of Science SP 117 OP 121 DO 10.2475/ajs.s3-28.164.117 VO s3-28 IS 164 A1 L. M. Cheesman YR 1884 UL http://www.ajsonline.org/content/s3-28/164/117.abstract AB