Good Vibrations by Thomas Alper Alper
2nd Place - Contrived Category
School: West Boca Raton High School
Teacher: Marc Bjorkland
In the photo, you can see that the finger is sliding around the rim of the crystal wine glass filled with water. As the finger applies pressure as it circles the rim, the glass vibrates and the vibrating glass causes the water to vibrate. The excited water shoots out of the glass in all directions just as the photo shows. Not only does the water shoot out, but the glass creates a high pitched sound because of the natural resonance of the glass being hit as the glass is vibrated. The pitch of the sound can be changed by the amount of water in the glass. That is due to the amount of space for the sound to resonate in the glass, the more water there is, the high pitch the sound and vice versa.
