cavitation in screwdriver plastic test 1

Hi all and hi Prof Steven Jones.
Here a very simple and cheap experiment with cavitation.
The ultrasonic mist transducer is moving the water so fast that the water cavitate and create micro bubles that expand and collapse with a great energy release.

This experiment shows that the micro buble collapsing can generate enough power to heat and penetrate the plastic of the screwdriver.

At the end of the test the screwdiver end is very hot.

You can do the experiment with hot glue stick in place of the screwdriver and the cavitation ‘s penetration is much deeper along the stick very fascinating.

Hope this helps


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