RT Journal Article SR Electronic T1 On a method of detecting the phases of vibration in the air surrounding a sounding body, and thereby measuring directly in the vibrating air the length of its waves and exploring the form of its wave-surface JF American Journal of Science JO Am J Sci FD American Journal of Science SP 387 OP 392 DO 10.2475/ajs.s3-4.23.387 VO s3-4 IS 23 A1 Mayer, M. YR 1872 UL http://www.ajsonline.org/content/s3-4/23/387.abstract AB