Ultrasonic Sound

An ultrasonic wave is emitted 80 000 Hz in a vein in the speed of sound is about 1.2 km / s?

An ultrasonic wave is emitted 80 000 Hz in a vein in the speed of sound is about 1.2 km / s. The wave is reflected in the red blood cells moving toward the stationary receiver. If the signal frequency Feedback is 80,019 Hz, what is the velocity of blood flow?

Approximately 1 / 2 * c * Df / f = 0.1425 m / s. It is difficult to find references Web addresses change sonar frequency of 2, but is analogous to "moving the reflector" formula on page 2-6.3 of the ref.

Hive – Ultrasonic Sound

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