Pre-radio technologies and early radio development| Prior to the introduction of radio, maritime communication was generally limited to line-of-sight visual signaling during clear weather, plus noise-makers such as bells and foghorns with only limited ranges. Beginning in the mid-1800s, an international convention was developed using...
Commercial service and sos distress call| By 1912, when Francis A. Collins' The Wireless Man was published, all the major passenger liners were equipped with radio transmitters. In the opening chapter of this book, Across the Atlantic, Collins reviewed how radio now kept vessels on transatlantic voyages in...
Radio use during emergencies| Radio greatly reduced the terrible isolation of ships during emergencies, and was quickly responsible for saving thousands of lives. Notable Achievements of Wireless, from the September, 1910 Modern Electrics, reviewed early cases where radio had provided maritime assistance, beginning with...
Transmission| Large television stations usually have some sort of television studio, which on major-network stations is often used for newscasts or other local programming. There is usually a news department, where journalists gather information. There is also a section where electronic news...
Wartime usage and broadcasting experimentation| The military importance of radio was immediately apparent. In August, 1914, the Belgians had to completely destroy a major international communications station located near Brussels, in order to keep it from falling into the hands of the advancing German army. Directing the War by Wireless, written by...
The history of television| For ages Man dreamt about the possibility of transmitting pictures over great distances, but not until he had learnt to master the electron was there any real hope of turning dream into practical reality.Different experiments by...
Color television| The early stages of color television experimentation in America overlap the technological development of monochromatic television. Color television was demonstrated by John Baird as early as 1928, and...
Cable television| Cable television, formally known as Community Antenna Television or CATV, was born in the mountains of Pennsylvania in the late 1940s. At the time, there were only a few television stations, located mostly in...
Satellite television| The framework allowed television images to be transmitted across the continent, and indeed across the world from broadcast provider to broadcast provider, thus giving us the opportunity to see live action from...
Digital television| Digital television is the application of digital technology to television to the process of producing and transmitting television programming. Television was developed as an "analog" medium, but the replacement of analog technology with...