Holography and Sonoluminescence

This summer as a research assistant to Dr. Peterson I studied optical techniques for observing vibrational modes of typical table glasses. This was done using stroboscopic holography techniques. As a result, the theoretical formula for the resonant modes of table glasses was confirmed. We, also, observed how this formula applied to higher modes of vibration. During the research many pictures and images were produced showing the mode patterns at a variety of different resonant frequencies.
In addition, sonoluminescence was optically studied. Recently, a new sonoluminescence system was purchased by Bethel University. This system has lead to results that are better and more consistent than those previously obtained in Bethel's Physics Labs. Through similar holography techniques, the bubble's behavior is being currently investigated. The resonating cell wall, also, is a topic of interest. Particularly, what role does the wall play in the oscillation of the bubble.

- Christopher Scheevel, senior physics major