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physics.pop-ph2011★ 2 cited
Echo-based measurement of the speed of sound
Alivia Berg, Michael Courtney
The speed of sound in air can be measured by popping a balloon next to a microphone a measured distance away from a large flat wall, digitizing the sound waveform, and measuring th…
physics.pop-ph2011
High-speed measurement of rifle primer blast waves
Michael Courtney, Amy Courtney
This article describes a method and results for direct high-speed measurements of rifle primer blast waves employing a high-speed pressure transducer located at the muzzle to recor…
physics.pop-ph2011
An Acoustic Demonstration of Galileo's Law of Falling Bodies
Michael Courtney, Elya R. Courtney
An acoustic method is presented for analyzing the time of falling motion. A ball is dropped from a measured height. The dropping device makes a distinct sound a well-determined tim…