Welcome to the Piezo SHOCK Show #56. In this video, I used a webcam microscope to measure the micron level displacement of an ultrasonic dental scaler. The first step is to calibrate the camera, getting a micron/pixel value. Then you can take an image of the ultrasonic motion and analyze the spread of a dot reflection. This spread can be measured to determine the displacement. In the video, I showed a displacement of 40 microns.

Watch the episode here: https://youtu.be/OCYojoA0mtQ

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I've posted the video notes below: