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"This invention relates to the production of electrical oscillations or impulses by means of the motion of a beam or beams of charged particles, ions, or electrons emanating from an electrode in an inclosed space under low pressure, and to the use of such a beam or beams for other purposes, as for example for the conduction of high frequency currents. I have found that it is possible to influence magnetically or electrostatically beams of charged particles, ions or electrons emanating from a Wehnelt cathode or the like, in a vacuum tube so as to obtain from a direct or alternating current, either with or without the use of antennae, a series of oscillation or impulses; and that by directing the beams through a plurality of narrow paths a very small vacuum tube can be used to produce the same with a relatively high power."
electricity, electrical engineering, charged particles, high frequency currents, Wehnelt cathode, electrical current
Goddard, Robert, "Method of and Apparatus for Producing Electrical Impulses or Oscillations" (1915). WPI Innovations. 27.