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====The race towards a practical electronic television camera==== The ingredients for inventing the photomultiplier were coming together during the 1920s as the pace of vacuum tube technology accelerated. The primary goal for many, if not most, workers was the need for a practical television camera technology. Television had been pursued with primitive prototypes for decades prior to the 1934 introduction of the first practical video camera (the [[iconoscope]]). Early prototype television cameras lacked sensitivity. Photomultiplier technology was pursued to enable television camera tubes, such as the iconoscope and (later) the [[orthicon]], to be sensitive enough to be practical. So the stage was set to combine the dual phenomena of [[photoemission]] (i.e., the photoelectric effect) with [[secondary emission]], both of which had already been studied and adequately understood, to create a practical photomultiplier.
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