. The Bell System technical journal . INPUT GAP Fig. 5—Applegates version of the phase-focusing diagram (Harrison).. POSITIONOF GAP Fie. 6—The conduction-current distribution at different distances along the beam aspredicted by the phase-focusing diagram. 339 340 BELL SYSTEM TECHNICAL JOURNAL

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Keywords: ., bookcentury1900, bookdecade1920, booksubjecttechnology, bookyear1