Television is based on photoelectric technology.
Television's initial developments are linked to pioneering attempts to both improve and send still images down a telegraph wire. In the mid 1800's, sending still images by telegraph wire was an electrochemical process. In 1884, university student Paul Nipkow of Germany proposed and patented the world's first electromechanical television system. Electronic television is based on the development of the cathode ray tube, which is the picture tube found in modern television sets. As time passed these developments would be applied to the scanning system for today's television.