Sounds are made by vibrations. The Oscylinderscope exhibit allows visitors the opportunity to view the normally unseen vibrations of guitar strings. The white stripes on the drum highlight a portion of the guitar string which is captured by your eye. When the drum is spinning, your eye retains the image for a moment, and your brain combines a series of images into a wave pattern that is not really there. This is called the “persistence of vision.”
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