History of radio a system for transmitting intelligence and wireless power using the earth as the medium. Others, such as Amos Dolbear, Sir Oliver Lodge, Reginald Fessenden, and Alexander Popov were involved in the development of components and theory involved with the transmission and reception of airborne electromagnetic waves for their own theoretical work or as a potential means of communication. Over several years starting in 1894 the Italian inventor Guglielmo Marconi built the first complete, commercially successful wireless telegraphy system based on airborne Hertzian waves (radio transmission). Marconi demonstrated the application of radio in military and marine communications and started a company
First long-distance telephone line Downieville, California. The site is now a California Historical Landmark. The marker is inscribed: WORLD'S FIRST LONG-DISTANCE TELEPHONE LINE The first long-distance telephone in the world, built in 1877 by the Ridge Telephone Company, connected French Corral with French Lake, 58 miles away. It was operated by the Milton Mining Company from a building on this site that had been erected about 1853. First long-distance telephone line The world's first long-distance telephone line, established in 1877, connected French Corral with Bowman Lake (previously known as French Lake) at the headwaters of the Yuba River. It was strung across trees and