Electricity museum hopes to juice interest with MegaZapper

There is no denying this is an excellent way to promote a museum devoted to electrical inventions: Let patrons sit inside a 9-foot-tall metal cage and zap it with blue sparks carrying 4 million volts.

OK, so maybe the insurance company will have a few questions, says John Jenkins, president of the Spark Museum of Electrical Invention museum here.

That's why he forwarded to those underwriters a letter from professor Brad Johnson, chair of Western Washington University's department of physics and astronomy.