ASA 124th Meeting New Orleans 1992 October

4aED2. Simple demonstrations with tuning forks.

Thomas D. Rossing

Phys. Dept., Northern Illinois Univ., DeKalb, IL 60115

Daniel A. Russell

Graduate Prog. in Acoust., Penn State Univ., University Park, PA 16802

Several old [Lord Rayleigh, Philos. Mag. 13, 316--333 (1907)] and new [Rossing et al., Am. J. Phys. 60, 620--626 (1992)] demonstration experiments using tuning forks are illustrated. These include nonlinear motion of the stem, radiation of the second harmonic, effect of a baffle, and the behavior of bent and loaded forks.