The New Student's Reference Work/Telephotography
Tel′ephotog′raphy is a recent improvement on ordinary telegraphy, the advantage of which is to secure an enormous rapidity in the transmission of messages. The invention of the process is due to Anton Pollak and Joseph Virag, two Hungarian scientists. By means of telephotography as many as 150,000 words may under favorable conditions be transmitted per hour. The process does away with “knocking;” and substitutes automatic writing for the slower process of receiving. Fewer operators are needed than under the Morse system, as well as less wire. The message is prepared on an endless strip of paper, so that the writing is represented by five rows of dashes, dots and circles. The currents are transmitted into the receiver along the line by electric branches. The membranes of two telephones in the receiver are agitated and move a mirror, which flashes rays of light so as to photograph the message. The photographs are developed in the machine and automatically cut off when the process is complete.