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A Soundwave was a type of wave of compression and rarefaction, by which sound is propagated in an elastic medium such as air.
A sonic screwdriver could project soundwaves to lock or unlock doors. (TV: The Mutants, Aliens of London)
A Soundwave was a type of wave of compression and rarefaction, by which sound is propagated in an elastic medium such as air.
A sonic screwdriver could project soundwaves to lock or unlock doors. (TV: The Mutants, Aliens of London)