https://ilnuovomondo.forumcommunity.net/?t=60903173#newpost
you can also use a tin piggy bank tin
set up
Seems a High voltage enhancer/component
and what looks to be a piece from a microwave oven ?
Quite Zappy stuff....
a bit more info on what is to be expected ?
respectfully
Chet
PS
your image is too Long for the forum comfort zone [and persons reading with I phones
Ynou can test with a can with a tungsten electrode plug as shown.Put small flakes of zinc ad a little sulfuric acid in the container through the cap,close the cap: hydrogen develops, feed the electrode and the can with high voltage;the cyclic timer is set to 1 second (on / off)