Famous inventor's new death ray beam to bring down fleets of aircraft Image added March 1, 2015 - 12:22 AM
Nikola Tesla in his laboratory with late type mercury arc rectifier tubes Image added March 1, 2015 - 12:22 AM
Tesla transformer with gravity controlled, sealed mercury interrupter Image added March 1, 2015 - 12:22 AM
Tesla oscillator with magnetically controlled, sealed mercury interrupter Image added March 1, 2015 - 12:22 AM