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Production of ultrasonic waves by Galton Whistle method

Ultrasonics can be produced by means of (i) Galton’s Whistle (ii) Magnetostriction Generator  (ii) Piezoelectric Generator or Oscillator. Galton’s Whistle. It contains of essentially a short cylindrical pipe blown in the form of an annular nozzle. The distance of nozzle from … Continue reading

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