How to Shrink a Quarter with Electricity

Great!! What a fun video and great explaining. Now, for more on the Lorentz Force, where to look? And approximately how long does the discharge last? And what is the approximate energy dumped into the coil?

I used to work with flash tubes, and the charging circuit for those uses the same idea as this one, except that the capacitors were charged up to a mere 400 volts. Of course we did not want anything to explode since that was for use in a real-world device -- a photo booth.