Biology, 05.05.2020 17:26 hellokitty1647

An ultrasound unit is being used to measure a patientâ€™s heartbeat by combining the emitted 2.0 mhz signal with the sound waves reflected from the moving tissue of one point on the heart. The beat frequency between the two signals has a maximum value of 520 hz.

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An ultrasound unit is being used to measure a patientâ€™s heartbeat by combining the emitted 2.0 mhz...

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