(RNS) — You have, of course, heard many times the story of Jacob’s dream from this week’s Torah portion in the book of Genesis — the famous story of Jacob’s ladder. Jacob has fled from ...

At this voltage level, it’s possible to generate an arc in air. To create the Jacob’s ladder, the kit is wired up to a pair of closely-spaced electrodes that slowly get farther apart as they ...

But in all their awesomeness, Jacob’s ladders really aren’t that complex. In [Kevin Darrah’s] latest tutorial he shows us how to make one out of a transformer taken from an oil furnace.