Audio Spotlight: How an Audio Spotlight Works [video]
Abstract
Dr. Bruce Denardo explains how a audio spotlight works and gives a jaw-dropping demonstration. The Audio spotlight is uses a set of transducers to generate a 65 kHz beam and because the wavelength of this beam is so small, it does not spread. In one sense, the audio spotlight is similar to a laser. How do we make this 65 khz beam of acoustic energy audible, so you can hear something when the acoustic spotlight is pointed at you?
Description
NPS Physics
In-class Physics Demonstrations
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.Collections
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