Nikola Tesla Books
162 HIGH FREQUENCY APPARATUS Fig. 17. Self-cooling spark gap gap across which the condenser discharges. The discharge is accompanied by heating effects which are in themselves troublesome, and while the ordinary stationary form of gap may give satisfactory service for a time at least, still its successful operation is hindered as the sparking surfaces become heated and pitted. The gap to be described has proved its value in actual practice and, while it may appear to be unnecessarily complex in design, still the many points of advantage are only brought out through the construction of a substantial and more or less massive affair. With reference to the side elevation and plan views in Fig. 17, the gap consists of two 8-inch discs of zinc ar
