| It seems to be an unwritten rule in Hollywood: there must be an assortment of devices that crackle and spark in the lab of a mad scientist....
| It seems to be an unwritten rule in Hollywood: there must be an assortment of devices that crackle and spark in the lab of a mad scientist....
| Here comes a dazzling DYI project allowing you to touch an electric arc (30 kV hey presto) with your bare fingers. No harm from that. Though...