👉 Phototelegraphic is a concept in telecommunications that refers to the use of light waves or other electromagnetic signals to transmit information between two points over long distances. It was first proposed by physicist John Taylor in 1907 and has since been widely adopted as an efficient means for transmitting data over long distances, especially in rural areas where traditional wired networks may be unreliable or inefficient. Phototelegraphic systems typically consist of a transmitter (a device that converts light into electrical signals) and a receiver