Changing refractive indices using ultrasound frequencies
1. Factors that alter refractive indices For a research idea,
find how much one factor needs to be altered in
order to change the index of refraction by a certain degree. For example,
changing the frequency by _____ amount will change the index by _____. Try
to find a trend. This would allow individual indices to be obtained
allowing properties of these indices, such as refraction, to be tested.
Indices for particular materials can be tested without obtaining the
1. Multi-frequency response of the bubble to sonoluminescence
During the sonoluminescence process, the bubble emits a fundamental
frequency and a harmonic of the fundamental frequency which can be audibly
heard as a buzzing noise. Since the two frequencies are of the same basic
shape but one is slightly altered from the other, it can be assumed that
the harmonic frequency is much higher than the fundamental frequency. For
a project, I could investigate which specific harmonic is emitted.