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bell labs
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sound motion picture system
the laboratories invented an early synchronous-sound motion picture system, in competition with Fox Movietone and DeForest Phonofilm. -
Karl Jansky
a foundation for radio astronomy was laid by Karl Jansky during his work investigating the origins of static on long-distance shortwave communications. He discovered that radio waves were being emitted from the center of the galaxy. -
the photovoltaic
In the early 1940s, the photovoltaic cell was developed by Russell Ohl. -
the published of claude Shannon
In 1948, "A Mathematical Theory of Communication", one of the founding works in information theory, was published by Claude Shannon in the Bell System Technical Journal. It built in part on earlier work in the field by Bell researchers Harry Nyquist and Ralph Hartley, but went much further. -
solar cell
In 1954, the first modern solar cell was invented at Bell Laboratories. -
first cable to carry telephone conversations,
in 1956 TAT-1, the first transatlantic communications cable to carry telephone conversations, was laid between Scotland and Newfoundland in a joint effort by ATT, Bell Laboratories, and British and Canadian telephone companies. -
UNIX
in 1969, Dennis Ritchie and Ken Thompson created the computer operating system UNIX for the support of telecommunication switching systems as well as general-purpose computing. A -
extended UNIX model
During the 1980s, the operating system Plan 9 from Bell Labs was developed extending the UNIX model. Also, the Radiodrum, an electronic music instrument played in three space dimensions, was invented. -
fiber optic communication
In the mid-1980s, the Transmission System departments of Bell Labs developed highly reliable long-haul fiber-optic communications systems based on SONET, and network operations techniques, that enabled very high volume, near-instantaneous communications across the North American continent. Fail-safe and disaster-related traffic management operations systems enhanced the usefulness of the fiber optics -
Laboratories Fellow
In May 1990, Ronald Snare was named ATT Bell Laboratories Fellow, for "Singular contributions to the development of the common-channel signaling network and the signal transfer points globally." -
AT&T spun off
In 1996, ATT spun off Bell Laboratories, along with most of its equipment manufacturing business, into a new company named Lucent Technologies. ATT retained a small number of researchers who made up the staff of the newly created ATT Labs. -
DNA prototypes
2000 was an active year for the Laboratories, in which DNA machine prototypes were developed; progressive geometry compression algorithm made widespread 3-D communication practical; the first electrically powered organic laser was invented; a large-scale map of cosmic dark matter was compiled; and the F-15 (material), an organic material that makes plastic transistors possible, was invented. -
the agreement with alcatel
In April 2006, Bell Laboratories' parent company, Lucent Technologies, signed a merger agreement with Alcatel. On December 1, 2006, the merged company, Alcatel-Lucent, began operations. This deal raised concerns in the United States, where Bell Laboratories works on defense contracts. -
Alcatel lucent announced
On August 28, 2008, Alcatel-Lucent announced it was pulling out of basic science, material physics, and semiconductor research, and it will instead focus on more immediately marketable areas, including networking, high-speed electronics, wireless networks, nanotechnology and software -
data rates
In September 2016, Nokia Bell Labs, along with Technische Universität Berlin, Deutsche Telekom T-Labs and the Technical University of Munich achieved a data rate of one terabit per second by improving transmission capacity and spectral efficiency in an optical communications field trial with a new modulation technique.