Bruce Richards
Oberlin College
Department of Physics & Astronomy
bruce.richards@oberlin.edu
[Important Note: Modern web browsers no longer run Java applets. So this collection of animations, coded as Java applets, must be executed outside a web browser. Because the applets are unsigned applications from an "unidentified developer," security settings will block their execution unless "http://www2.oberlin.edu" is entered in the Exception Site LIst in the Security Tab of the Java Control Panel. Further instructions are found on the web page of each applet.]
Title | Description | |
---|---|---|
Vibrating Strings | The motion of a bowed string, a plucked string, and a hammered string. | |
String Modes | Shows how the motion of a bowed or plucked string is the sum of normal mode vibrations. | |
String Harmonics | The motion of a bowed string when touched by a finger to play harmonics. | |
Circular Membrane | Selected normal modes of a circular membrane, or motion of a struck membrane. | |
Pipes | The first three normal modes of vibration of air in cylindrical pipes with selected end conditions. | |
Tapered Pipe | The first three normal modes of vibration of air in a pipe open at both ends whose taper may be adjusted continuously from cylindrical to conical. | |
Three Degrees | The three normal modes for longitudital vibrations of a system with three degrees of freedom are shown, along with the more general motions following two different initial conditions. | |
Beats | Showing the addition of two sine waves of slightly different frequencies. | |
Simple Harmonic Motion | The relation between simple harmonic motion and circular motion. | |
Color Mixing | What do you get by mixing or absorbing red, green, and blue light? |