ABSTRACT

  Advances in phototelegraphy during the first decade of the twentieth century brought experimental apparatus out of the laboratory into limited commercial use. The promising developments in transmitting graphic materials undoubtedly spurred those who were seeking answers to the problem of sending visual images over wires. Indeed, the younger sister art relied upon many components and techniques then beginning to serve practical ends in various expanding branches of electrotechnology. Because of this intermarriage of technical means, the difference between phototelegraphy (sometimes miscalled telephotography) and telectroscopy was not always clear to inventors and others; hence proposals range from graphic recording systems to hybrids with features of both graphic and visual reproduction to true television schemes.