Diabolical Death Rays from the PopSci Archives...
Death rays and high tech weapons were popular fixtures in popular fiction of the 20s and 30s, but it turns out they were also on the minds of scientists at the time, too, who strove to recreate some of scifi's most devas...
http://www.neatorama.com/2012/09/16/Diabolical-Death-Rays-from-the-PopSci-Archives/
