Nikola Tesla U.S. Patent 645,576 - System of Transmission of Electrical Energy Patent Wrapper Page 67

T T I { T q electrical energy through the natural media, which consists in producing between the earth and a generator terminal elevated above the same, at a generating station, a sufficiently high electro-motive force to render the air strata at or near the elevated terminal conducting, causing thereby a propagation or flow of electrical energy, by conduction, through the air strata, and collecting or receiving at a point distant from the generating station the electrical energy so propagated or caused to flow. 5: The method hereinbefore described of transmitting electrical energy through the natural media, which consists in producing between the earth and a generator terminal elevated above the same, at a generating station, electrical impulses of a sufficiently high electro-motive force to render elevated air strata conducting, causing thereby current impulses to pass, by conduction, through the air strata, and collecting or receiving at a point distant from the generating station, the energy of the current impulses by means of a circuit synchronized with the impulses. 6: The method hereinbefore described of transmitting electrical energy through the natural media, which consists in producing between the earth and a generator terminal elevated above the same, at a generating station, electrical impulses of a sufficiently high electro-motive force to render the air strata at or near the elevated terminal conducting, causing thereby current impulses to pass through the air strata, and collecting or receiving at a point distant from the generating station the energy of the current impulses by means of a circuit synchronized -18[This page retyped from microfilm for better readability - Ed.] 185