Search results
Results From The WOW.Com Content Network
One page that is dedicated to celebrating photography from history is Old-Time Photos on Facebook. This account shares digitized versions of photos from the late 1800s all the way up to the 1980s.
The first tube shaft candlestick telephone was the Western Electric #20B Desk Phone patented in 1904. [1] In the 1920s and 1930s, telephone technology shifted to the design of more efficient desktop telephones that featured a handset with receiver and transmitter elements in one unit, making the use of a telephone more convenient.
In 1930, it formally replaced the B handset mounting in 102-type telephones, and in 1931 it became the standard base for the 202. However, type B handset mountings continued to be produced until c. 1932, and installation of 202-type telephones with the anti-sidetone circuit were delayed due to the economic conditions of the Great Depression.
It was the first Bakelite phone with integral cradle, dial and ringer, and was very modern for its time. [3] [4] [5] Until the early 1930s, the housing of the Swedish phone models was made from pressed steel. Material change from steel to Bakelite brought new opportunities in design, while also reducing the production time for the housing.
Previous telephones required the user to operate a separate switch to connect either the voice or the bell. With the new kind, the user was less likely to leave the phone "off the hook". In phones connected to magneto exchanges, the bell, induction coil, battery, and magneto were in a separate bell box called a "ringer box". In phones connected ...
They were invented in the 1930s but took decades to become standard. New Hampshire switched to dials town by town starting in the largest city in 1950 and finishing in a remote village in 1973. [40] Dorothy M. Johnson, who later became a famous writer, started as a part-time relief operator at age 14 in Whitefish, Montana, in the early 1920s ...
Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Pages for logged out editors learn more
1900: first television displayed only black and white images. Over the next decades, colour television were invented, showing images that were clearer and in full colour. 1914: First North American transcontinental telephone calling; 1927: Television. See: History of television; 1927: First commercial radio-telephone service, U.K.–U.S.