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    “You can hear whale song from thousands of miles away” - Dr Helen Czerski on the fascinating world of sound
Physicist Dr Helen Czerski talks to Katie Puckrik about her new series on ѿý 4, Sound Waves: The Symphony of Physics where she investigates the extraordinary science behind the sounds we can recognise and those we cannot hear.
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More clips from Katie Puckrik sits in and is joined by Dr Helen Czerski
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