Electromedicine & Nikola Tesla
In 1895, the Niagara Falls Power Company opened for the first time and within a year, sent alternating current (AC) to Buffalo , NY , twenty-five miles away, thanks to Nikola Tesla AC generator.
Cities throughout the world followed suit and made commercial AC power available to the general public, even miles from the power generating station. As a result, Tesla's high voltage coil devices, which were powered by AC, started to become widely known and applied.
In 1898, Tesla published a paper that he read at the eighth annual meeting of the American Electro-Therapeutic Association in Buffalo , NY entitled, "High Frequency Oscillators for Electro-Therapeutic and Other Purposes." He states that "One of the early observed and remarkable features of the high frequency currents, and one which was chiefly of interest to the physician, was their apparent harmlessness which made it possible to pass relatively great amounts of electrical energy through the body of a person without causing pain or serious discomfort."
Coils up to three feet in diameter were used for magnetically treating the body without contact, though ten to a hundred thousand volts were present "between the first and last turn." Preferably, Tesla describes using spheres of brass covered with two inches of insulating wax for contacting the patient, while unpleasant shocks were prevented.
Tesla concludes correctly that bodily "tissues are condensers" in the 1898 paper, which is the basic component (dielectric) for an equivalent circuit only recently developed for the human body. In fact, the relative permittivity for tissue at any frequency from ELF (10 Hz-100 Hz) through RF (10 kHz100 MHz) exceeds most commercially available dielectrics on the market.
This unique property of the human body indicates an inherent adaptation and perhaps innate compatibility toward the presence of high voltage electric fields, probably due to the high transmembrane potential already present in cellular tissue. Tesla also indicates that the after-effect from his coil treatment "was certainly beneficial" but that an hour exposure was too strong to be used frequently.
This has been found to be still true today with the Tesla coil therapy devices. On September 6, 1932, at a seminar presented by the American Congress of Physical Therapy, held in New York , Dr. Gustave Kolischer announced: "Tesla's high-frequency electrical currents are bringing about highly beneficial results in dealing with cancer, surpassing anything that could be accomplished with ordinary surgery."