👉 Phototelegraphically is a term used in telecommunications to describe the process of sending or receiving information over electromagnetic waves. It refers to the use of light, such as visible light and radio waves, to transmit information from one place to another using electronic devices called telegraphs. The term was first used by British physicist John Tyndall in 1874 to describe the process of sending signals over long distances using a telescope. Today, phototelegraphically is widely used in various
