Sound Waves: The Symphony of Physics, Series 1, Episode 2, Using Sound
directed by Suzy Boyles, fl. 2010; presented by Helen Czerski, 1978-; produced by Suzy Boyles, fl. 2010, Open University and British Broadcasting Corporation, in Sound Waves: The Symphony of Physics, Series 1, Episode 2 (London, England: BBC Worldwide, 2017), 52 mins
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