Nikola Tesla Patents
J вателеб дека To all whom it may concern:- De it known that I, Nikola Tesla, a citizen of the United States, residing at the Borough of Manhattan, in the City, County and State of New York, have discovered a new and useful improvement in the art of Transmitting Electrical Energy through the natural media, of which the following is a specification, reference being had to the dravings accompanying and forming a part of the same. It has been known for a long time that electrical disturbancas or currents may be propagated through the Earth, and this knowledge has been utilized in many ways in the transmission of signals and the operation of a variety of receiving devices at points remote from the source of energy, mainly with the object of dispensing with a return conducting wire. It has also been known, that electrical disturbances or currents may be transmitted through portions of the Earth by merely grounding one of the poles of a source of such disturbances, and this fact I have made use of in several systems, which I have devised for the purposes of transmitting, through the natural media, intelligible signals or power, and which are now well known. But all experiments and observations heretofore made, have concurred in confirming the opinion shared by the majority of scientific men, that the Earth, owing to its immense extent, although possessing conducting properties, does not behave in the manner of a conductor of limited dimensions with respect to the disturbances produced, but, on tha contrary, much like a vast reservoir or ocean which, -1519
