closed-circuit telegraph system
61Invention of the telephone — The modern telephone is the result of work done by many people, all worthy of recognition of their contributions to the field. Alexander Graham Bell was the first to patent the telephone, an apparatus for transmitting vocal or other sounds… …
62Crossbar switch — In electronics, a crossbar switch (also known as cross point switch, crosspoint switch, or matrix switch) is a switch connecting multiple inputs to multiple outputs in a matrix manner. Originally the term was used literally, for a matrix switch… …
63performing arts — arts or skills that require public performance, as acting, singing, or dancing. [1945 50] * * * ▪ 2009 Introduction Music Classical. The last vestiges of the Cold War seemed to thaw for a moment on Feb. 26, 2008, when the unfamiliar strains …
64May 2011 — was the fifth month of the current year. It began on a Sunday and ended after 31 days on a Tuesday. International holidays (See Holidays and observances, on sidebar at right, below) Portal:Current events This is an archived version of Wikipedia s …
65Marconi Station — The New Brunswick Marconi Radio Station in Somerset, New Jersey, being toured in 1921 by some of the greatest physicists and scientists of the era, including Albert Einstein and Nikola Tesla. The Marconi Wireless Corporation operated numerous… …
66Teleprinter — A teleprinter (teletypewriter, Teletype or TTY for TeleTYpe/TeleTYpewriter) is a now largely obsolete electro mechanical typewriter which can be used to communicate typed messages from point to point and point to multipoint over a variety of… …
67Economic Affairs — ▪ 2006 Introduction In 2005 rising U.S. deficits, tight monetary policies, and higher oil prices triggered by hurricane damage in the Gulf of Mexico were moderating influences on the world economy and on U.S. stock markets, but some other… …
68Michael Schumacher — Schumacher at the 2011 Canadian Grand Prix Born 3 January 1969 (1969 01 03) (age 42) Hürth, West Germany …
69Antonio Meucci — Born 13 April 1808(1808 04 13) Florence, Italy …
70Channel Tunnel — Map of the Channel Tunnel Overview Location English Channel (Strait of Dover) Coordinates Folkestone …
