Ultrashort electromagnetic waves III — Generation

The general theory behind electromagnetic waves is as old as Maxwell´s field equations. The production of undamped ultrashort waves of any appreciable power, however, was delayed until the discovery and development of the magnetron as a high-frequency oscillator and the introduction of the type of velocitymodulation generator known as the klystron. The author of the accompanying article has not only designed and developed some of these new types of ultrashort-electromagnetic-wave generators but has contributed by his many interesting talks and technical papers to the advancement and general knowledge in this field. This is the third article of a series originally presented as lectures before the basic science group of the AIEE New York Section. The two preceding articles appeared in the March and April issues of “Electrical Engineering”