Nikola Tesla's Long Range Weapon
An early history of "death rays"
Tesla at Wardenclyffe;
Theoretical justification for electrical energy to be transmitted through the earth:
"Dr. Andrija Puharich, in 1976, was the first to point out that Tesla's power transmission system could not be explained by the laws of classical electrodynamics, but, rather, in terms of relativistic transformations in high energy fields. He noted that according to Dirac's theory of the electron, when one of those particles encountered its oppositely charged member, a positron, the two particles would annihilate each other. Because energy can neither be destroyed nor created the energy of the two former particles are transformed into an electromagnetic wave. The opposite, of course, holds true. If there is a strong enough electric field, two opposite charges of electricity are formed where there was originally no charge at all. This type of trans- formation usually takes place near the intense field near an atomic nucleus, but it can also manifest without the aid of a nuclear catalyst if an electric field has enough energy. Puharich's involved mathematical treatment demonstrated that power levels in a Tesla transmitter were strong enough to cause such pair production. "
Circumstantial evidence that the Tunguska explosion of 1908 was an errant test of a directed energy weapon by Tesla