Not Until the Fat Lady Sings

The purpose of this experiment was to discover the resonant frequencies of glass. Other aspects were to break the glass and discover if a uniform frequency exists for all glasses or if the frequency depends upon different characteristics of the glass.

To conduct this experiment the resonant frequencies of two beakers were found by matching the sound that was emitted from a generator with the sound from tapping the glass of the beaker. The frequency was correct because when the volume was turned up, the beaker vibrated in tune with the frequency. To further support this, a stroboscope was used to view these vibrations.

Although the equipment broke during the experiment, the resonant frequencies for both beakers were obtained; however, only a stroboscope reading for the 1000 mL beaker was found. The fact that the wavelength equals the circumference was disproved by testing and calculations. But, it is true that the vibrations of the glass if the stoboscope is set at a multiple of the resonant frequencies can be seen.

Research Done By:

Kristie Aiuto

Scott Arseneault