Ten coupled pendulums of different lengths; shows resonance and phase.
All objects have a natural frequency of vibration or resonant frequency. If you force a system—in this case a set of pendulums—to oscillate, you get a maximum transfer of...
Single air track glider, with and without variable frequency driver, variable damping, and oscilloscope position vs. time display.
With one end of the car attached via a spring to the end of the track and the other end of the car coupled (via...
Video of our demo in action https://www.youtube.com/watch?v=wUpOlqbHcjI
The following is a sequence of experiments that can accompany a standard lecture on electromagnetic waves. The entire sequence is quite long and you may not want to do...
Long pendulums coupled by spring; also a pair of hacksaw blades magnetically coupled.
Vibrational resonances of metal reeds are excited by a spinning gyro as it slows down.
The Frahm resonance gyroscope is a standard piece of equipment that can be purchased from science supply houses. 1 It consists of a heavy wheel slightly...
The "tick-tocks" of five metronomes will come into synchronization when weakly coupled together.
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The five metronomes sit on a very light FoamCore® board which, in turn, is supported by two aluminum cans on their side. The support...
A large square metal plate, supported and harmonically driven at its center, is made to vibrate in any one of its numerous normal modes of vibration. As with the regular Chladni Plates, the two-dimensional standing wave patterns are made...
Accumulation of sand at nodes of vibrating plate reveals resonance patterns.
A Chladni plate consists of a flat sheet of metal, usually circular or square, mounted on a central stalk to a sturdy base. When the plate is oscillating in a...
Standing sound waves in a glass pipe are made evident by the fountains of kerosene inside the pipe.
The air inside a very large glass pipe (partially filled with a fluid) is acoustically excited into a standing wave. Once resonating, the...
