RT Journal Article SR Electronic T1 On the damping of bell-magnets and ring-magnets by surrounding copper JF American Journal of Science JO Am J Sci FD American Journal of Science SP 454 OP 463 DO 10.2475/ajs.s3-47.282.454 VO s3-47 IS 282 A1 A. Kendrick YR 1894 UL http://www.ajsonline.org/content/s3-47/282/454.abstract AB