Pennsylvania State University
Applied Physics: Vibrational Modes of a Circular Membrane (Drums)
Site tracks the vibrations of a drum and provides an animated movie.
Pennsylvania State University
Applied Physics: Experimental Research on Baseball Bat Vibrations
Fun science site that explores the vibrational behavior of a baseball/softball bat. Contains links to mode splitting in wood bats, controlling vibration, measuring the vibration of a baseball/softball bat and more!