Several years ago my friend Ryan and I decided that building
a Tesla coil would be a great experience. A Tesla coil is a high frequency resonating
transformer that is capable of producing extremely high voltage and very large sparks. Tesla
coils in the form shown here have no practical use today, but they do have the ability to produce a very
extraordinary show of artificial lightning. The coil we built is a little over five feet
tall and is completely self contained, just plug it in and watch the sparks fly.
More recently I've finished building a small tabletop coil that produces 6"
arcs.