1976
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Telefon is a film starring Charles Bronson as a KGB agent who tries to stop a rogue clerk from activating Soviet sleeper agents in the US. The film is based on a novel by Walter Wager and directed by Don Siegel.
Google’s official phone calling app is now available to download for the first time. Phone helps you easily connect with family and friends, block spam callers, and know who’s calling before...
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Telefon: Directed by Don Siegel. With Charles Bronson, Lee Remick, Donald Pleasence, Tyne Daly. A Russian officer is sent to the U.S. to try and stop sleeper agents who will mindlessly attack government entities when they hear certain coded words.
- (6.3K)
- Action, Crime, Drama
- Don Siegel
- 1977-12-16
- Overview
- The telephone instrument
- Working components of the telephone
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A telephone is an instrument designed for the simultaneous transmission and reception of the human voice. Telephones are inexpensive and simple to operate, and they offer an immediate, personal type of communication. Billions of telephones are in use around the world.
When was the telephone patented?
On February 14, 1876, Alexander Graham Bell applied for a U.S. patent for the telephone. On March 7, 1876, Bell was awarded U.S. patent 174,465. This patent is often referred to as the most valuable ever issued by the U.S. Patent Office, as it described not only the telephone instrument but also the concept of a telephone system.
When was the telephone introduced to the public?
One of the earliest demonstrations of the telephone occurred in June 1876 at the Centennial Exposition in Philadelphia.
Who is credited as the inventor of the telephone?
The word telephone, from the Greek roots tēle, “far,” and phonē, “sound,” was applied as early as the late 17th century to the string telephone familiar to children, and it was later used to refer to the megaphone and the speaking tube, but in modern usage it refers solely to electrical devices derived from the inventions of Alexander Graham Bell a...
As it has since its early years, the telephone instrument is made up of the following functional components: a power source, a switch hook, a dialer, a ringer, a transmitter, a receiver, and an anti-sidetone circuit. These components are described in turn below.
Britannica Quiz
Learn about the invention, development, and components of the telephone, an instrument for transmitting and receiving sound by electricity. Explore the history of the telephone from its origins to the modern digital network.
Learn the meaning and usage of the word Telefon in German and English, with translations, pronunciation, and examples from corpora and sources on the web. Find out how to say Telefon in different contexts and situations.
Sep 10, 2024 · Nicolai Dalchimski, a mad KGB agent steals a notebook full of names of "sleeping" undercover KGB agents sent to the U.S. in the 1950's. These agents got their assignments under hypnosis, so they can't remember their missions until they're told a line of a Robert Frost poem.
A mobile phone or cell phone[ a ] is a portable telephone that can make and receive calls over a radio frequency link while the user is moving within a telephone service area, as opposed to a fixed-location phone (landline phone).
