i help out at a local jr high school, and one of the students that i see on a regular basis tells me that he has built this cool project for school. he tells me that he built a Jacobs ladder, and that he has brought it to school to show in science class. it was in the principles office so we went to see it and check it out. this kid built it him self from parts he found in the back ally. old micro waves and such. jacobs ladder