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Excerpt from “Tesla at 78 bears new Death beam” Jul 11, 1934 NY Times: “The production of the death beam, Dr. Tesla said, involves four new inventions, which have not been announced by him. The scientific details of these inventions are to be given out by him before tha proper scientific bodies in the near future. …. “The first inventions, he said, comprises a method and apparatus for producing rays and other manifestations of energy in free air, eliminating the high vacuum necessary at present for the production of such rays and beams. The second is a method and process for producing “great electrical force.” The third is a method for amplifying this process in the second invention. The fourth, he said, is “a new method for producing a tremendous electrical repelling* force.” (*repelling may have been changed from “propelling” in this article to mislead. Tesla has always referred to a propelling force.)