Bell Labs

aesthetics  →
being  →
complexity  →
database  →
enterprise  →
ethics  →
fiction  →
history  →
internet  →
knowledge  →
language  →
licensing  →
linux  →
logic  →
method  →
news  →
perception  →
philosophy  →
policy  →
purpose  →
religion  →
science  →
sociology  →
software  →
truth  →
unix  →
wiki  →
essay  →
feed  →
help  →
system  →
wiki  →
critical  →
discussion  →
forked  →
imported  →
original  →
Bell Labs
[ temporary import ]
please note:
- the content below is remote from Wikipedia
- it has been imported raw for GetWiki
{{short description|Research and scientific development company}}{{for|buildings named Bell Telephone Laboratories|Bell Laboratories Building (Manhattan)}}

}}Nokia Bell Labs (formerly named Bell Labs Innovations (1996–2007)WEB,weblink Bell Labs Innovations, American Institute of Physics, 9 June 2019, , AT&T Bell Laboratories (1984–1996)WEB,weblink AT & T Bell Laboratories, American Institute of Physics, 9 June 2019, and Bell Telephone Laboratories (1925–1984)WEB,weblink Bell Telephone Laboratories, American Institute of Physics, 9 June 2019, ) is an industrial research and scientific development company owned by Finnish company Nokia. With headquarters located in Murray Hill, New Jersey, the company operates several laboratories in the United States and around the world. Bell Labs has its origins in the complex past of the Bell System.In the late 19th century, the laboratory began as the Western Electric Engineering Department and was located at 463 West Street in New York City. In 1925, after years of conducting research and development under Western Electric, the Engineering Department was reformed into Bell Telephone Laboratories and under the shared ownership of American Telephone & Telegraph Company and Western Electric.Researchers working at Bell Labs are credited with the development of radio astronomy, the transistor, the laser, the photovoltaic cell, the charge-coupled device (CCD), information theory, the Unix operating system, and the programming languages C, C++, and S. Nine Nobel Prizes have been awarded for work completed at Bell Laboratories.

Origin and historical locations

Bell's personal research after the telephone

In 1880, when the French government awarded Alexander Graham Bell the Volta Prize of 50,000 francs (approximately US$10,000 at that time; about ${{formatnum:{{Inflation|US|10000|1879|r=-4}}}} in January 2019's dollars{{Inflation-fn|US}}) for the invention of the telephone, he used the award to fund the Volta Laboratory (Alexander Graham Bell Laboratory) in Washington, D.C. in collaboration with Sumner Tainter and Bell's cousin Chichester Bell.Bruce, Robert V. Bell: Alexander Bell and the Conquest of Solitude. Ithaca, New York: Cornell University Press, 1990. {{ISBN|0-8014-9691-8}}. The laboratory was variously known as the Volta Bureau, the Bell Carriage House, the Bell Laboratory and the Volta Laboratory.It focused on the analysis, recording, and transmission of sound. Bell used his considerable profits from the laboratory for further research and education to permit the "[increased] diffusion of knowledge relating to the deaf": resulting in the founding of the Volta Bureau (c. 1887) which was located at Bell's father's house at 1527 35th Street N.W. in Washington, D.C. Its carriage house became their headquarters in 1889.In 1893, Bell constructed a new building close by at 1537 35th Street N.W., specifically to house the lab. This building was declared a National Historic Landmark in 1972.WEB
, Volta Bureau
, 2008-05-10
, National Historic Landmark summary listing
, National Park Service
, dead
,weblink" title="">weblink
, 2012-10-11
, {hide}citation
| title=National Register of Historic Places Inventory-Nomination: Volta Bureau |url={{NHLS url|id=72001436{edih}
| date=n.d.
| author=Unsigned
| publisher=National Park Service
}} and {{NHLS url|id=72001436|title=Accompanying three photos, exterior, from 1972|photos=y}} {{small|(920 KB)}}WEB
, Volta Laboratory & Bureau, 2008-05-10
, Washington D.C. National Register of Historic Places Travel Itinerary listing
, National Park Service,weblink" title="">weblink 12 May 2008, live,
After the invention of the telephone, Bell maintained a relatively distant role with the Bell System as a whole, but continued to pursue his own personal research interests.BOOK, Alexander Graham Bell, A Life, Mackay, James, John Wiley & Sons Inc., 1997, USA, (File:Volta Laboratory and Bureau nw22.jpg|thumb|250px|alt=An oblique view of a large salmon colored two story stone building, of some prominence|Bell's 1893 Volta Bureau building in Washington, D.C.)

Early antecedent

The Bell Patent Association was formed by Alexander Graham Bell, Thomas Sanders, and Gardiner Hubbard when filing the first patents for the telephone in 1876.Bell Telephone Company, the first telephone company, was formed a year later. It later became a part of the American Bell Telephone Company.American Telephone & Telegraph Company (AT&T) and its own subsidiary company, took control of American Bell and the Bell System by 1889.American Bell held a controlling interest in Western Electric (which was the manufacturing arm of the business) whereas AT&T was doing research into the service providers.BOOK, The Telephone Enterprise, Garnet, Robert, The Johns Hopkins University Press, 1985, Baltimore, Maryland, 1–44, WEB,weblink Nokia Bell Labs History, 20 July 2018, Nokia Bell Labs, In 1884, the American Bell Telephone Company created the Mechanical Department from the Electrical and Patent Department formed a year earlier.

Formal organization and location changes

(File:Bell Laboratories West Street.jpg|alt=463 West Street New York Bell Labs|thumb|The original home of Bell Laboratories beginning in 1925, 463 West Street, New York.)In 1896, Western Electric bought property at 463 West Street to station their manufacturers and engineers who had been supplying AT&T with their product. This included everything from telephones, telephone exchange switches, and transmission equipment.In 1925, Bell Laboratories was developed to better consolidate the research activities of the Bell System. Ownership was evenly split between Western Electric and AT&T. Throughout the next decade the AT&T Research and Development branch moved into West Street.Bell Labs also carried out consulting work for the Bell Telephone Company, U.S. government work, and a few workers were assigned to basic research. The first president of research at Bell Labs was Frank B. Jewett who stayed there until 1940.JOURNAL, Donofrio, Angelo, May–June 1966, West Street Story, Bell Labs Reporter, 15, BOOK, The Idea Factory, Gertner, Jon, The Penguin Press, 2012, New York, BOOK, Manufacturing the Future, Adams, Butler, Cambridge University Press, 1999, Cambridge, By the early 1940s, Bell Labs engineers and scientists had begun to move to other locations away from the congestion and environmental distractions of New York City, and in 1967 Bell Laboratories headquarters was officially relocated to Murray Hill, New Jersey.Among the later Bell Laboratories locations in New Jersey were Holmdel, Crawford Hill, the Deal Test Site, Freehold, Lincroft, Long Branch, Middletown, Neptune, Princeton, Piscataway, Red Bank, Chester, and Whippany. Of these, Murray Hill and Crawford Hill remain in existence (the Piscataway and Red Bank locations were transferred to and are now operated by Telcordia Technologies and the Whippany site was purchased by BayerWEB, It's official! Bayer buys Alcatel-Lucent site in Hanover Twp,weblink The Hanover Eagle, 21 May 2012, ).The largest grouping of people in the company was in Illinois, at Naperville-Lisle, in the Chicago area, which had the largest concentration of employees (about 11,000) prior to 2001. There also were groups of employees in Indianapolis, Indiana; Columbus, Ohio; North Andover, Massachusetts; Allentown, Pennsylvania; Reading, Pennsylvania; and Breinigsville, Pennsylvania; Burlington, North Carolina (1950s–1970s, moved to Greensboro 1980s) and Westminster, Colorado. Since 2001, many of the former locations have been scaled down or closed.File:Bell Labs Holmdel.jpg|thumbnail|right|Old Bell Labs Holmdel ComplexBell Labs Holmdel ComplexThe Holmdel site, a 1.9 million square foot structure set on 473 acres, was closed in 2007. The mirrored-glass building was designed by Eero Saarinen. In August 2013, Somerset Development bought the building, intending to redevelop it into a mixed commercial and residential project. A 2012 article expressed doubt on the success of the newly named Bell Works siteNEWS, Future takes shape for Bell Labs site,weblink The New York Times, September 29, 2013, however several large tenants had announced plans to move in through 2016 and 2017 WEB,weblink iCIMS Plans Move to Landmark Bell Works Building, Commits to Continued Growth in NJ, July 10, 2016,, October 10, 2018, WEB,weblink Hundreds of new workers to move into historic Bell Labs building, April 10, 2017,, October 10, 2018,

Discoveries and developments

(File:Bell Laboratories logo.svg|thumb|right|Bell Laboratories logo, used from 1969 until 1983){{More citations needed section|date=December 2018}}Bell Laboratories was, and is, regarded by many as the premier research facility of its type, developing a wide range of revolutionary technologies, including radio astronomy, the transistor, the laser, information theory, the operating system Unix, the programming languages C and C++, solar cells, the charge-coupled device (CCD), and many other optical, wireless, and wired communications technologies and systems.


In 1926, the laboratories invented an early example synchronous-sound motion picture system, in competition with Fox Movietone and DeForest Phonofilm.ENCYCLOPEDIA,weblinkweblink" title="">weblink 2006-05-03, Bell Laboratories, Encyclopædia Britannica, In 1924, Bell Labs physicist Walter A. Shewhart proposed the control chart as a method to determine when a process was in a state of statistical control. Shewhart's methods were the basis for statistical process control (SPC): the use of statistically based tools and techniques to manage and improve processes. This was the origin of the modern quality movement, including Six Sigma.In 1927, a Bell team headed by Herbert E. Ives successfully transmitted long-distance 128-line television images of Secretary of Commerce Herbert Hoover from Washington to New York. In 1928 the thermal noise in a resistor was first measured by John B. Johnson, and Harry Nyquist provided the theoretical analysis; this is now termed Johnson noise. During the 1920s, the one-time pad cipher was invented by Gilbert Vernam and Joseph Mauborgne at the laboratories. Bell Labs' Claude Shannon later proved that it is unbreakable.


File:Green Banks - Jansky Antena.jpg|thumb|Reconstruction of the directional antenna used in the discovery of radio emission of extraterrestrial origin by Karl Guthe Jansky at Bell Telephone LaboratoriesBell Telephone LaboratoriesIn 1931, 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. In 1931 and 1932, experimental high fidelity, long playing, and even stereophonic recordings were made by the labs of the Philadelphia Orchestra, conducted by Leopold Stokowski.Leopold Stokowski, Harvey Fletcher, and the Bell Laboratories Experimental Recordings, Retrieved 2012-03-01. In 1933, stereo signals were transmitted live from Philadelphia to Washington, D.C. In 1937, the vocoder, an electronic speech compression device, or codec, and the Voder, the first electronic speech synthesizer, were developed and demonstrated by Homer Dudley, the Voder being demonstrated at the 1939 New York World's Fair. Bell researcher Clinton Davisson shared the Nobel Prize in Physics with George Paget Thomson for the discovery of electron diffraction, which helped lay the foundation for solid-state electronics.


File:Replica-of-first-transistor.jpg|thumb|right|The first transistor, a point-contact germaniumgermaniumIn the early 1940s, the photovoltaic cell was developed by Russell Ohl. In 1943, Bell developed SIGSALY, the first digital scrambled speech transmission system, used by the Allies in World War II. The British wartime codebreaker Alan Turing visited the labs at this time, working on speech encryption and meeting Claude Shannon.BOOK, Jack Copeland, Jack, Copeland, Jonathan Bowen, Jonathan, Bowen, Chapter 1: Life and work & Chapter 18: Delilah—encrypting speech, The Turing Guide, Oxford University Press, 2017, 978-0198747833, The Turing Guide, Bell Labs Quality Assurance Department gave the world and the United States such statisticians as Walter A. Shewhart, W. Edwards Deming, Harold F. Dodge, George D. Edwards, Harry Romig, R. L. Jones, Paul Olmstead, E.G.D. Paterson, and Mary N. Torrey. During World War II, Emergency Technical Committee – Quality Control, drawn mainly from Bell Labs' statisticians, was instrumental in advancing Army and Navy ammunition acceptance and material sampling procedures.In 1947, the transistor, probably the most important invention developed by Bell Laboratories, was invented by John Bardeen, Walter Houser Brattain, and William Bradford Shockley (and who subsequently shared the Nobel Prize in Physics in 1956). In 1947, Richard Hamming invented Hamming codes for error detection and correction. For patent reasons, the result was not published until 1950. 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 it greatly extended these. Bell Labs also introduced a series of increasingly complex calculators through the decade. Shannon was also the founder of modern cryptography with his 1949 paper Communication Theory of Secrecy Systems.


JOURNAL, Irvine, M. M., July 2001, pdf, Early digital computers at Bell Telephone Laboratories, IEEE Annals of the History of Computing, 23, 3, 22–42, 10.1109/85.948904, 1058-6180, BOOK,weblink Birthing the Computer: From Relays to Vacuum Tubes, Kaisler, Stephen H., 2016, Cambridge Scholars Publishing, 9781443896313, 32–37, en, Chapter Three: Stibitz's Relay Computers,
  • Model I: A Complex Number Calculator, completed in 1939 and put into operation in 1940, for doing calculations of complex numbers.
  • Model II: Relay Computer / Relay Interpolator,JOURNAL, Cesareo, O., THE RELAY INTERPOLATOR, Bell Laboratories Record, Dec 1946, XXIV, 12, 457–460,weblink September 1943, for interpolating data points of flight profiles (needed for performance testing of a gun director).BOOK, Akera, Atsushi, Calculating a Natural World: Scientists, Engineers, and Computers During the Rise of U.S. Cold War Research, 2008, MIT Press, 9780262512039, 57,weblink en, This model introduced error detection (self checking).BOOK, Belzer, Jack, Holzman, Albert G., Kent, Allen, Encyclopedia of Computer Science and Technology: Volume 3 – Ballistics Calculations to Box–Jenkins Approach to Time Series Analysis and Forecasting, 1976, CRC Press, 9780824722531, 197,weblink en, BOOK, 2,weblink Logic Design: A Review Of Theory And Practice, By Glen G. Jr. Langdon, 9780323160452, 2012-12-02,
  • Model III: Ballistic Computer,JOURNAL, Juley, Joseph, THE BALLISTIC COMPUTER, Bell Laboratories Record, Jan 1947, XXV, 1, 5–9,weblink June 1944, for calculations of ballistic trajectories
  • Model IV: Error Detector Mark II, March 1945,BOOK,weblink A survey of automatic digital computers, Research, United States Office of Naval, 1953, Office of Naval Research, Dept. of the Navy, Model V-VI, IV, 9–10, 63 (in reader: 15–16, 69), en, improved ballistic computer
  • Model V:WEB,weblink Г. – Bell Labs – Model V,, Russian, G. – Bell Labs – Model V, Google translation, 2017-10-11, General purpose electromechanical computer, of which two were built, July 1946 and February 1947BOOK,weblink Encyclopedia of Computer Science, Reilly, Edwin D., Ralston, Anthony, Hemmendinger, David, 2000, Nature Publishing Group, 9781561592487, 548, en, JOURNAL, Alt, Franz L., 1948, A Bell Telephone Laboratories' computing machine. I, Mathematics of Computation, en-US, 3, 21, 1–13, 10.1090/S0025-5718-1948-0023118-1, 0025-5718,
  • JOURNAL, Alt, Franz L., 1948, A Bell Telephone Laboratories' computing machine. II, Mathematics of Computation, en-US, 3, 22, 69–84, 10.1090/S0025-5718-1948-0025271-2, 0025-5718,


In 1952, William Gardner Pfann revealed the method of zone melting which enabled semiconductor purification and level doping.The 1950s also saw developmental activity based upon information theory. The central development was binary code systems. Efforts concentrated more precisely on the Laboratories' prime mission of supporting the Bell System with engineering advances including N-carrier, TD Microwave radio relay, Direct Distance Dialing, E-repeaters, Wire spring relays, and improved switching systems. Maurice Karnaugh, in 1953, developed the Karnaugh map as a tool to facilitate management of Boolean algebraic expressions. In 1954, the first modern solar cell was invented at Bell Laboratories. As for the spectacular side of the business, in 1956 TAT-1, the first transatlantic telephone cable was laid between Scotland and Newfoundland, in a joint effort by AT&T, Bell Laboratories, and British and Canadian telephone companies. A year later, in 1957, MUSIC, one of the first computer programs to play electronic music, was created by Max Mathews. New greedy algorithms developed by Robert C. Prim and Joseph Kruskal, revolutionized computer network design. In 1958, the laser was first described, in a technical paper by Arthur Schawlow and Charles Hard Townes.In 1959, Mohamed M. Atalla and Dawon Kahng invented the metal-oxide semiconductor field-effect transistor (MOSFET), and presented their invention in 1960. The MOSFET has achieved electronic hegemony and sustains the large-scale integrated circuits (LSIs) underlying today's information society.


(File:Nobel Prize 2009-Press Conference KVA-19.jpg|thumb|240px|The charge-coupled device was invented by George E. Smith and Willard Boyle)In December 1960, Ali Javan and his associates William Bennett and Donald Heriot successfully operated the first gas laser, the first continuous-light laser, operating at an unprecedented accuracy and color purity. In 1962, the electret microphone was invented by Gerhard M. Sessler and James Edward Maceo West. Also in 1962, John R. Pierce's vision of communications satellites was realized by the launch of Telstar. In 1964, the Carbon dioxide laser was invented by Kumar Patel. In 1965, Penzias and Wilson discovered the cosmic microwave background, for which they were awarded the Nobel Prize in Physics in 1978weblink Frank W. Sinden, Edward E. Zajac, Kenneth C. Knowlton, and A. Michael Noll made computer-animated movies during the early to mid-1960s. Ken C. Knowlton invented the computer animation language BEFLIX. The first digital computer art was created in 1962 by Noll. In 1966, Orthogonal frequency-division multiplexing (OFDM), a key technology in wireless services, was developed and patented by R. W. Chang. In 1968, Molecular beam epitaxy was developed by J.R. Arthur and A.Y. Cho; molecular beam epitaxy allows semiconductor chips and laser matrices to be manufactured one atomic layer at a time. 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. From 1969 to 1971, Aaron Marcus, the first graphic designer involved with computer graphics, researched, designed, and programmed a prototype interactive page-layout system for the Picturephone. In 1969, the charge-coupled device (CCD) was invented by Willard Boyle and George E. Smith, for which they were awarded the Nobel Prize in Physics in 2009. In the 1960s, the New York City site was sold and became the Westbeth Artists Community complex.


(File:The C Programming Language logo.svg|left|thumb|125px|The C programming language was developed in 1972.)The 1970s and 1980s saw more and more computer-related inventions at the Bell Laboratories as part of the personal computing revolution. In 1972, Dennis Ritchie developed the compiled programming language C as a replacement for the interpreted language B which was then used in a worse is better rewrite of UNIX. Also, the language AWK was designed and implemented by Alfred Aho, Peter Weinberger, and Brian Kernighan of Bell Laboratories. In 1972, Marc Rochkind invented the Source Code Control System.In 1970, A. Michael Noll invented a tactile, force-feedback system, coupled with interactive stereoscopic computer display. In 1971, an improved task priority system for computerized telephone exchange switching systems for telephone traffic was invented by Erna Schneider Hoover, who received one of the first software patents for it. In 1976, Optical fiber systems were first tested in Georgia and in 1980, the first single-chip 32-bit microprocessor, the Bellmac 32A was demonstrated. It went into production in 1982.The 1970s also saw a major central office technology evolve from crossbar electromechanical relay-based technology and discrete transistor logic to Bell Labs-developed thick film hybrid and transistor–transistor logic (TTL), stored program-controlled switching systems; 1A/#4 TOLL Electronic Switching Systems (ESS) and 2A Local Central Offices produced at the Bell Labs Naperville and Western Electric Lisle, Illinois facilities. This technology evolution dramatically reduced floor space needs. The new ESS also came with its own diagnostic software that needed only a switchman and several frame technicians to maintain. The technology was often touted in the Bell Labs Technical Journals and Western Electric magazine (WE People).{{Citation needed|date=August 2009}}


(File:Bell Labs logo, 1984-1995.png|frame|Bell Laboratories logo, used from 1984 until 1995)In 1980, the TDMA and CDMA digital cellular telephone technology was patented. In 1982, Fractional quantum Hall effect was discovered by Horst Störmer and former Bell Laboratories researchers Robert B. Laughlin and Daniel C. Tsui; they consequently won a Nobel Prize in 1998 for the discovery. In 1985,WEB,weblink The Rise of C++ - Bell Labs,, 2016-05-13,weblink" title="">weblink 2017-06-30, dead, the programming language C++ had its first commercial release.BOOK,weblink C++ AND OBJECT-ORIENTED PROGRAMMING PARADIGM, JANA, DEBASISH, 2014-10-01, PHI Learning Pvt. Ltd., 9788120350335, en, Bjarne Stroustrup started developing C++ at Bell Laboratories in 1979 as an extension to the original C language.In 1984, the first photoconductive antennas for picosecond electromagnetic radiation were demonstrated by Auston and others. This type of antenna became an important component in terahertz time-domain spectroscopy. In 1984, Karmarkar's algorithm for linear programming was developed by mathematician Narendra Karmarkar. Also in 1984, a divestiture agreement signed in 1982 with the American Federal government forced the break-up of AT&T: Bellcore (now Telcordia Technologies) was split off from Bell Laboratories to provide the same R&D functions for the newly created local exchange carriers. AT&T also was limited to using the Bell trademark only in association with Bell Laboratories. Bell Telephone Laboratories, Inc. became a wholly owned company of the new AT&T Technologies unit, the former Western Electric. The 5ESS Switch was developed during this transition. In 1985, laser cooling was used to slow and manipulate atoms by Steven Chu and team. In 1985, the modeling language A Mathematical Programming Language AMPL was developed by Robert Fourer, David M. Gay and Brian Kernighan at Bell Laboratories. Also in 1985, Bell Laboratories was awarded the National Medal of Technology "For contribution over decades to modern communication systems". 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. In 1988, TAT-8 became the first transatlantic weblink The Nobel Prize in Physics 2018,, en-US, 2018-10-02,


missing image!
- Lucent Technologies logo.svg">thumb|200px|Lucent Logo bearing the "Bell Labs Innovations" taglineIn the early 1990s, approaches to increase modem speeds to 56K were explored at Bell Labs, and early patents were filed in 1992 by Ender Ayanoglu, Nuri R. Dagdeviren and their colleagues.PATENT, US, 5394437, expired, High-speed modem synchronized to a remote CODEC, 1995-02-28, 1992-10-20, Ender Ayanoglu, Nuri R. Dagdeviren, James E. Mazo, Burton R. Saltzberg, AT&T Corp, . In 1994, the quantum cascade laser was invented by Federico Capasso, Alfred Cho, Jerome Faist and their collaborators. Also in 1994, Peter Shor devised his quantum factorization algorithm. In 1996, SCALPEL electron lithography, which prints features atoms wide on microchips, was invented by Lloyd Harriott and his team. The operating system Inferno, an update of Plan 9, was created by Dennis Ritchie with others, using the then-new concurrent programming language Limbo. A high performance database engine (Dali) was developed which became DataBlitz in its product form.WEB,weblinkweblink" title="">weblink dead, 1997-01-16, The Dali Home Page, In 1996, AT&T spun off Bell Laboratories, along with most of its equipment manufacturing business, into a new company named Lucent Technologies. AT&T retained a small number of researchers who made up the staff of the newly created AT&T Labs.In 1997, the smallest then-practical transistor (60 nanometers, 182 atoms wide) was built. In 1998, the first optical router was invented.


thumb|200px|Pre-2013 logo of Alcatel-Lucent, parent company of Bell Labs2000 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 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.In 2002, physicist Jan Hendrik Schön was fired after his work was found to contain fraudulent data. It was the first known case of fraud at Bell Labs.In 2003, the New Jersey Institute of Technology Biomedical Engineering Laboratory was created at Murray Hill, New Jersey.New Jersey Nanotechnology Consortium. Profile {{webarchive |url= |date=May 30, 2008 }}In 2005, Jeong H. Kim, former President of Lucent's Optical Network Group, returned from academia to become the President of Bell Laboratories.In April 2006, Bell Laboratories' parent company, Lucent Technologies, signed a merger agreement with Alcatel. On 1 December 2006, the merged company, Alcatel-Lucent, began operations. This deal raised concerns in the United States, where Bell Laboratories works on defense contracts. A separate company, LGS Innovations, with an American board was set up to manage Bell Laboratories' and Lucent's sensitive U.S. government contracts.In December 2007, it was announced that the former Lucent Bell Laboratories and the former Alcatel Research and Innovation would be merged into one organization under the name of Bell Laboratories. This is the first period of growth following many years during which Bell Laboratories progressively lost manpower due to layoffs and spin-offs making the company shut down for a short period of time.As of July 2008, however, only four scientists remained in physics research, according to a report by the scientific journal Nature.JOURNAL, Access : Bell Labs bottoms out : Nature News, Nature, 454, 7207, 927, Geoff Brumfiel, 10.1038/454927a, 18719552, 2008, On 28 August 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.JOURNAL,weblink Priya, Ganapati, Bell Labs Kills Fundamental Physics Research, 2008-08-27, 2008-08-28, Wired (magazine), Wired,weblink" title="">weblink 28 August 2008, live, In 2009, Willard Boyle and George Smith were awarded the Nobel Prize in Physics for the invention and development of the charge-coupled device (CCD).WEB,weblink The 2009 Nobel Prize in Physics – Press Release,, 2009-10-06, 2017-01-07,


File:Nokia Bell Labs sign.jpg
Gee Rittenhouse, former Head of Research, returned from his position as Chief Operating Officer of Alcatel-Lucent's Software, Services, and Solutions business in February 2013, to become the 12th President of Bell Labs.PRESS RELEASE, Gee Rittenhouse to take over as President of world-famous research institution Bell Labs,weblink Paris, Alcatel-Lucent, February 18, 2013, 2016-03-10, On 4 November 2013, Alcatel-Lucent announced the appointment of Marcus Weldon as President of Bell Labs. His stated charter was to return Bell Labs to the forefront of innovation in Information and communications technology by focusing on solving the key industry challenges, as was the case in the great Bell Labs innovation eras in the past.PRESS RELEASE, Marcus Weldon appointed President of Alcatel-Lucent's Bell Labs to accelerate and unlock innovation as part of The Shift Plan,weblink Paris, Alcatel-Lucent, November 4, 2013, 2016-03-10, In July 2014, Bell Labs announced it had broken "the broadband Internet speed record" with a new technology dubbed XG-FAST that promises 10 gigabits per second transmission speeds.PRESS RELEASE, Alcatel-Lucent sets new world record broadband speed of 10 Gbps for transmission of data over traditional copper telephone lines,weblink Paris, Alcatel-Lucent, July 9, 2014, 2016-03-10,weblink 2016-03-10, In 2014, Eric Betzig shared the Nobel Prize in Chemistry for his work in super-resolved fluorescence microscopy which he began pursuing while at Bell Labs in the Semiconductor Physics Research Department.WEB, The Nobel Prize in Chemistry 2014, 2014,weblink Nobel Media AB, 2016-03-10, On 15 April 2015, Nokia agreed to acquire Alcatel-Lucent, Bell Labs' parent company, in a share exchange worth $16.6 billion.PRESS RELEASE, Nokia and Alcatel-Lucent Combine to Create an Innovation Leader in Next Generation Technology and Services for an IP Connected World,weblink Helsinki & Paris, Nokia, April 15, 2015, 2016-03-10,weblink" title="">weblink 2015-04-16, dead, NEWS, Scott, Mark, Jolly, David, April 15, 2015, Nokia Agrees to $16.6 Billion Takeover of Alcatel-Lucent,weblink The New York Times, 2016-03-10, Their first day of combined operations was 14 January 2016.PRESS RELEASE, Nokia celebrates first day of combined operations with Alcatel-Lucent,weblink Espoo, Finland, Nokia, January 14, 2016, 2016-03-10,weblink" title="">weblink 2016-03-09, dead, 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.PRESS RELEASE, Technical University of Munich, Optical fiber transmits one terabit per second,weblink 2016-09-16, 2016-09-23, In 2018, Arthur Ashkin shared the Nobel Prize in Physics for his work on "the optical tweezers and their application to biological systems" which was developed at Bell Labs in 1980s.{| class="wikitable"! || Period || Name of President || LifetimeMarcus Weldon>| b. 1968Gee Rittenhouse>| Jeong H. Kim>Jeong Hun Kim b. 1961Bill O’Shea>| b. 1957Arun Netravali>| b. 1946Dan Stanzione>| b. 1945John Sullivan Mayo>| b. 1930Ian Munro Ross>| 1927–2013William Oliver Baker>| 1915–2005James Brown Fisk>URL=HTTPS://WWW.NYTIMES.COM/1981/08/13/OBITUARIES/JAMES-FISK-BELL-LABS-EXECUTIVE-AND-LEADER-IN-RADAR-DIES-AT-70.HTML NEWSPAPER=THE NEW YORK TIMES, August 13, 1981, Mervin Kelly>| 1895–1971Oliver Buckley>| 1887–1959Frank Baldwin Jewett>| 1879–1949

Nobel Prizes and Turing Award

Nine Nobel Prizes have been awarded for work completed at Bell Laboratories.WEB,weblink Awards & Recognition - Bell Labs,weblink 2016-03-08, dead, 2016-03-08, The Turing Award has been won four times by Bell Labs researchers.
  • 1968: Richard Hamming for his work on numerical methods, automatic coding systems, and error-detecting and error-correcting codes.BOOK,weblink Pillars of Computing: A Compendium of Select, Pivotal Technology Firms, O'Regan, Gerard, 2015-09-24, Springer, 9783319214641, en, WEB,weblink Richard W. Hamming - A.M. Turing Award Laureate,, 2019-02-03,
  • 1983: Ken ThompsonWEB,weblink Kenneth Lane Thompson - A.M. Turing Award Laureate,, 2019-02-03, and Dennis RitchieWEB,weblink Dennis M. Ritchie - A.M. Turing Award Laureate,, 2019-02-03, for their work on operating system theory, and for developing Unix.
  • 1986: Robert TarjanWEB,weblink Robert E Tarjan - A.M. Turing Award Laureate,, 2019-02-03, with John Hopcroft,WEB,weblink John E Hopcroft - A.M. Turing Award Laureate,, 2019-02-03, for fundamental achievements in the design and analysis of algorithms and data structures.
  • 2018: Yann LeCun and Yoshua Bengio shared the Turing Award with Geoffrey Hinton for their work in Deep Learning.

Notable alumni{| class"wikitable sortable"

! !! Alumni !! Notes50px) Ali Javan Invented the gas laser in 1960.50px) style="background:khaki;" Arno Allan Penzias >| Discovered background radiation, with Robert W. Wilson, originating from the Big Bang and won the Nobel Prize in 1978 for the discovery. Arthur Ashkin Has been considered as the father of the topical field of optical tweezers, for which he was awarded the Nobel Prize in Physics 2018.Bishnu Atal >| Developed new speech processing and encoding algorithms, including fundamental work on linear prediction of speech and linear predictive coding (LPC), and the development of code-excited linear prediction (CELP) speech encoding, the basis for all speech communication codecs in mobile and Internet voice communications.50px) Bjarne Stroustrup Was the head of Bell Labs Large-scale Programming Research department, from its creation until late 2002 and created the C++ programming language.50px) Brian Kernighan Helped create Unix, AWK, AMPL, and The C Programming Language (book) Claire F. Gmachl >| Developed novel designs for solid-state lasers leading to advances in the development of quantum cascade lasers.50pxClaude Shannon >information theory with the publishing of A Mathematical Theory of Communication in 1948. He is perhaps equally well known for founding both digital computer and digital circuit design theory in 1937, when, as a 21-year-old master's degree student at the Massachusetts Institute of Technology (MIT), he wrote his thesis or dissertation>thesis demonstrating that electrical applications of Boolean algebra (logic) could construct any logical, numerical relationship.POUNDSTONE TITLE=FORTUNE'S FORMULA : THE UNTOLD STORY OF THE SCIENTIFIC BETTING SYSTEM THAT BEAT THE CASINOS AND WALL STREET PUBLISHER=HILL & WANG ISBN=978-0-8090-4599-0, Shannon contributed to the field of cryptanalysis for national defense during World War II, including his basic work on codebreaking and secure telecommunications. For two months early in 1943, Shannon came into contact with the leading British cryptanalyst and mathematician Alan Turing. Shannon and Turing met at teatime in the cafeteria.{{Citation first = Andrew year = 1992 location = London Vintage Books>Vintage isbn = 978-0-09-911641-7Universal Turing machine";{{Citation > last= Turing authorlink=Alan Turing year = 1936 periodical = Proceedings of the London Mathematical Society volume = 42 doi= 10.1112/plms/s2-42.1.230 }}{{Citation first = A.M. title = On Computable Numbers, with an Application to the Entscheidungsproblem: A correction series = 2 pages = 544–6 year = 1938 | issue = 6 }} this impressed Shannon, as many of its ideas complemented his own.50px) style="background:khaki;" Clinton Davisson >| Davisson and Lester Germer performed an experiment showing that electrons were diffracted at the surface of a crystal of nickel. This celebrated Davisson-Germer experiment confirmed the de Broglie hypothesis that particles of matter have a wave-like nature, which is a central tenet of quantum mechanics. Their observation of diffraction allowed the first measurement of a wavelength for electrons. He shared the Nobel Prize in 1937 with George Paget Thomson, who independently discovered electron diffraction at about the same time as Davisson.Corinna Cortes >| Head of Google Research, New York.50px) style="background:khaki;" Daniel Tsui >| Along with Robert Laughlin and Horst Störmer discovered new form of quantum fluid.50px) David A. B. Miller 50px) Dawon Kahng Invented the MOSFET (metal-oxide-semiconductor field-effect transistor) with Mohamed M. Atalla in 1959.HTTPS://WWW.COMPUTERHISTORY.ORG/SILICONENGINE/METAL-OXIDE-SEMICONDUCTOR-MOS-TRANSISTOR-DEMONSTRATED/>TITLE=1960 - METAL OXIDE SEMICONDUCTOR (MOS) TRANSISTOR DEMONSTRATEDPUBLISHER=COMPUTER HISTORY MUSEUM, LOJEK >FIRST1=BO DATE=2007 SPRINGER SCIENCE & BUSINESS MEDIA >ISBN=9783540342588 electronics industry,CHAN TITLE=STUDIES OF INAIAS/INGAAS AND GAINP/GAAS HETEROSTRUCTURE FET'S FOR HIGH SPEED APPLICATIONS PUBLISHER=UNIVERSITY OF MICHIGAN PAGE=1 LAST2=GOWAR TITLE=POWER MOSFETS: THEORY AND APPLICATIONS PUBLISHER=WILEY (PUBLISHER) >ISBN=9780471828679 URL=HTTPS://BOOKS.GOOGLE.COM/BOOKS?ID=ZIZTAAAAMAAJ semiconductor device in the world.WHO INVENTED THE TRANSISTOR? WEBSITE=COMPUTER HISTORY MUSEUM ACCESSDATE=20 JULY 2019, GOLIO >FIRST1=MIKE FIRST2=JANET DATE=2018 CRC PRESS >ISBN=9781420006728 URL=HTTPS://BOOKS.GOOGLE.COM/BOOKS?ID=MCJ9JXSVQKIC&PG=SA18-PA2, 50px) style="background:#98FB98;" Dennis Ritchie >| Created the C programming language and, with long-time colleague Ken Thompson, the Unix operating system.Donald Cox >| Received the IEEE Alexander Graham Bell Medal (1993)Elizabeth Bailey >| Worked in technical programming at Bell Laboratories from 1960 to 1972, before transferring to the economic research section from 1972 to 1977. Eric BetzigUnited States>American physicist who worked to develop the field of fluorescence microscopy and photoactivated localization microscopy. He was awarded the 2014 Nobel Prize in Chemistry for "the development of super-resolved fluorescence microscopy" along with Stefan Hell and fellow Cornell alumnus William E. Moerner.50px) Eric Schmidt Did a complete re-write with Mike Lesk of Lex (software), a program to generate Lexical analysis>lexical analysers for the Unix computer operating system.Erna Schneider Hoover >Telephone exchange>telephone switching method.Esther M. Conwell >| Studied effects of high electric fields on electron transport in semiconductors, member of the National Academy of Engineering, National Academy of Sciences, and the American Academy of Arts and Sciences.Evelyn Hu >| Pioneer in the fabrication of nanoscale electronic and photonic devices.50px) style="background:khaki;" George E. Smith >VLSI device department. George E. Smith shared the 2009 Nobel Prize in Physics with Willard Boyle for "the invention of an imaging semiconductor circuit—the CCD sensor, which has become an electronic eye in almost all areas of digital photography>photography".PARRY >FIRST=WAYNE TITLE=3 AMERICANS SHARE 2009 NOBEL PHYSICS PRIZE DATE=2009-10-06, 2017-01-07, Gil Amelio >| Amelio was on the team that demonstrated the first working charge-coupled device (CCD). Worked at Fairchild Semiconductor, and the semiconductor division of Rockwell International but is best remembered as a CEO of National Semiconductor and Apple Inc.Harvey Fletcher >stereophonic sound". As Director of Research at Bell Labs, he oversaw research in electrical sound recording, including more than 100 stereo recordings with conductor Leopold Stokowski in 1931–1932.HTTP://WWW.STOKOWSKI.ORG/HARVEY%20FLETCHER%20BELL%20LABS%20RECORDINGS.HTM LAST=HUFFMAN PUBLISHER=WWW.STOKOWSKI.ORG ACCESSDATE=FEBRUARY 17, 2014, William Ander Smith, The mystery of Leopold Stokowski. Fairleigh Dickinson Univ Press, 1990, p.175.50px) style="background:khaki;" Horst Ludwig Störmer >| Along with Robert Laughlin and Daniel Tsui discovered new form of quantum fluid. 50px) style="background:#98FB98;" John Hopcroft >| Received the Turing Award jointly with Robert Tarjan in 1986 for fundamental achievements in the design and analysis of algorithms and data structures.50px) Ingrid Daubechies Developed the orthogonal Daubechies wavelet and the biorthogonal Cohen–Daubechies–Feauveau wavelet. She is best known for her work with wavelets in image compression (such as JPEG 2000) and digital cinema.Jessie MacWilliams >| Developed the MacWilliams identities in coding theory.John Mashey >PWB/UNIX operating system at Bell Labs from 1973 to 1983, authoring the PWB shell, also known as the "Mashey Shell".T.A. FIRST2=R.C. FIRST3=J.R. TITLE=THE PROGRAMMER'S WORKBENCH VOLUME=57 PAGES=2177–2200 URL=HTTP://WWW.ALCATEL-LUCENT.COM/BSTJ/VOL57-1978/ARTICLES/BSTJ57-6-2177.PDF, 10.1002/j.1538-7305.1978.tb02148.x, John M. Chambers >| Developed the statistical programming language S which is the forerunner to R. 50px) style="background:khaki;" John Bardeen >William Shockley and Walter Houser Brattain>Walter Brattain, the three scientists invented the point-contact transistor in 1947 and were jointly awarded the 1956 Nobel Prize in Physics. 50px) Jon Hall (programmer) >Executive Director of Linux International,HTTP://WWW.LI.ORG PUBLISHER=LI.ORG URL-STATUS=DEAD ARCHIVEDATE=2015-08-04, 50px) style="background:#98FB98;" Ken Thompson >Unix operating system. He also invented the B (programming language)>B programming language, the direct predecessor to the C (programming language), and was one of the creators and early developers of the Plan 9 from Bell Labs>Plan 9 operating systems. Since 2006, Thompson has worked at Google, where he co-invented the Go programming language.Laurie Spiegel >| Electronic musician and engineer known for developing the algorithmic composition software Music Mouse.Margaret H. Wright >| Pioneer in numerical computing and mathematical optimization, head of the Scientific Computing Research Department and Bell Labs Fellow, president of the Society for Industrial and Applied Mathematics.Max Mathews >MUSIC-N>MUSIC, the first widely used program for sound generation, in 1957.50px) Mohamed M. Atalla Developed the silicon surface passivation process in 1957,BASSETT >FIRST1=ROSS KNOX DATE=2007 JOHNS HOPKINS UNIVERSITY PRESS >ISBN=9780801886393 URL=HTTPS://BOOKS.GOOGLE.COM/BOOKS?ID=UUBB3D2UNAAC&PG=PA46, and then invented the MOSFET (metal-oxide-semiconductor field-effect transistor), the first practical implementation of a field-effect transistor, with Dawon Kahng in 1959. This led to a breakthrough in semiconductor technology,HUFF >FIRST1=HOWARD DATE=2005 SPRINGER SCIENCE & BUSINESS MEDIA >ISBN=9783540210818 URL=HTTPS://BOOKS.GOOGLE.COM/BOOKS?ID=KASMXEPNQCMC&PG=PA34, SAH >FIRST=CHIH-TANG TITLE=EVOLUTION OF THE MOS TRANSISTOR-FROM CONCEPTION TO VLSI PROCEEDINGS OF THE IEEE >DATE=OCTOBER 1988 ISSUE=10 DOI=10.1109/5.16328 ISSN=0018-9219 bibcode=1988IEEEP..76.1280S }} and revolutionized the electronics industry.Narendra Karmarkar >| Developed Karmarkar's algorithm.Osamu Fujimura (scientist)>Osamu Fujimura|Japanese physicist, phonetician and linguist, recognized as one of the pioneers of speech science. Invented the C/D model of speech articulation.50px) Persi Diaconis Known for tackling mathematical problems involving randomness and randomization, such as coin flipping and shuffling playing cards.50px) style="background:khaki;" Philip Warren Anderson >| In 1977 Anderson was awarded the Nobel Prize in Physics for his investigations into the electronic structure of magnetic and disordered systems, which allowed for the development of electronic switching and memory devices in computers.Phyllis Fox >DYNAMO (programming language)>DYNAMO simulation programming language, principal author of the first LISP manual, and developed the PORT Mathematical Subroutine Library. Richard Hamming Created a family of mathematical error-correcting code, which are called Hamming codes. Programmed one of the earliest computers, the IBM 650, and with Ruth A. Weiss developed the L2 programming language, one of the earliest computer languages, in 1956.50px) style="background:khaki;" Robert Laughlin >| Along with Horst Störmer and Daniel Tsui discovered new form of quantum fluid. 50px) Rob Pike A member of the Unix team and was involved in the creation of the Plan 9 from Bell Labs and Inferno (operating system)>Inferno operating systems, as well as the Limbo (programming language) programming language. Co-authored the books The Unix Programming Environment and The Practice of Programming with Brian Kernighan. Co-created the UTF-8 character encoding standard with Ken Thompson, the Blit (computer terminal)>Blit graphical terminal with Bart Locanthi Jr. and the Sam (text editor) and Acme (text editor)>acme text editors. Pike has worked at Google, where he co-created the Go (programming language) and Sawzall (programming language)>Sawzall programming languages. 50px) style="background:#98FB98;" Robert Tarjan >| Received the Turing Award jointly with John Hopcroft in 1986 for fundamental achievements in the design and analysis of algorithms and data structures.50px) style="background:khaki;" Robert W. Wilson >| Discovered background radiation, with Arno Allan Penzias, originating from the Big Bang and won the Nobel Prize in 1978 for that. 50px) Stephen R. Bourne >Bourne shell>Bourne Shell (computing), the Advanced Debugger>adb debugger and authored the book The Unix System. He also served as president of the Association for Computing Machinery (ACM) (2000-2002), was made a fellow of the ACM (2005), received the ACM Presidential Award (2008) and the Outstanding Contribution to ACM Award (2017).50px) style="background:khaki;" Steven Chu >Stanford University in laser cooling>cooling and trapping of atoms with laser light, which won him the Nobel Prize in Physics in 1997, along with his scientific colleagues Claude Cohen-Tannoudji and William Daniel Phillips.TORE FRäNGSMYR > TITLE = THE NOBEL PRIZES 1997 ACCESSDATE = 2007-06-25 PUBLISHER = THE NOBEL FOUNDATION STOCKHOLM >CHAPTER= STEVEN CHU AUTOBIOGRAPHY, 1998, Steven Cundiff >frequency comb that led to one half of the 2005 Nobel prize.CARRIER-ENVELOPE PHASE CONTROL OF FEMTOSECOND MODE-LOCKED LASERS AND DIRECT OPTICAL FREQUENCY SYNTHESISDOI=10.1126/SCIENCE.288.5466.635, Also made significant contributions to the ultrafast dynamics of semiconductor nanostructures, including the 2014 discovery of the dropleton quasi-particle.QUANTUM DROPLETS OF ELECTRONS AND HOLES>DATE=27 FEBRUARY 2014, 10.1038/nature12994, Stuart Feldman >computer software program make (software)>make for Unix systems. He was also an author of the first Fortran 77 compiler, and he was part of the original group at Bell Labs that created the Unix operating system.M. D. AUTHORLINK1=DOUG MCILROY URL=HTTP://WWW.CS.DARTMOUTH.EDU/~DOUG/READER.PDF SERIES=CSTR INSTITUTION=BELL LABS, 50px) Trevor Hastie Known for his contributions to applied statistics, especially in the field of machine learning, data mining, and bioinformatics.Zhenan Bao >organic field-effect transistors which allows for its use in electronic paper.AN INNOVATION ENGINE FOR LUCENTVOLUME = 76PAGES = 24–28FIRST=RONDOI=10.1021/CEN-V076N048.P024, 50px) style="background:khaki;" Walter Houser Brattain >John Bardeen and William Shockley, invented the point-contact transistor in December, 1947.HTTP://WWW.IEEEGHN.ORG/WIKI/INDEX.PHP/WALTER_H._BRATTAIN AUTHOR= WEBSITE=IEEE GLOBAL HISTORY NETWORK IEEE >ACCESSDATE=10 AUGUST 2011, They shared the 1956 Nobel Prize in Physics for their invention.50px) style="background:khaki;" Willard Boyle >George E. Smith for "the invention of an imaging semiconductor circuit—the CCD sensor, which has become an electronic eye in almost all areas of digital photography>photography".William B. Snow >Fellow (society)>Fellow of the Audio Engineering Society (AES), received its Gold Medal Award in 1968.50px) style="background:khaki;" William Shockley >John Bardeen and Walter Houser Brattain>Walter Brattain, the three scientists invented the point-contact transistor in 1947 and were jointly awarded the 1956 Nobel Prize in Physics. Yann LeCun Recognized as a founding father of convolutional neural networks and for work on optical character recognition and computer vision. He received the Turing Award in 2018 with Geoffrey Hinton and Yoshua Bengio for their work in deep learning. Yoshua Bengio He received the Turing Award in 2018 with Geoffrey Hinton and Yann LeCun for their work in deep learning.50px)Edward Lawry Norton Famous for the Norton's theorem.Maurice Karnaugh >| Famous for the Karnaugh map.Warren P. Mason >| Founder of distributed-element circuits, inventor of the GT quartz crystal, and many discoveries and inventions in ultrasonics and acoustics.||Sharon Haynie|Developed DuPont's bio-3G product line and adhesives to close wounds.


On May 20, 2014, Bell Labs announced the Bell Labs Prize, a competition for innovators to offer proposals in information and communication technologies, with cash awards of up to $100,000 for the grand prize.WEB,weblink Nokia Bell Labs Prize, Bell Labs, 2017-01-07,

Bell Labs Technology Showcase

The Murray Hill campus features a 3000 square foot exhibit, the Bell Labs Technology Showcase, showcasing the technological discoveries and developments at Bell Labs. The exhibit is located just off the main lobby and is open to the public.WEB,weblink Bell Labs Technology Showcase,, 2017-01-07,

See also



Further reading

  • Martin, Douglas. Ian M. Ross, a President at Bell Labs, Dies at 85, The New York Times, March 16, 2013, p. A23
  • BOOK, Jon Gertner, 2013, The Idea Factory: Bell Labs and the Great Age of American Innovation, 978-0143122791, The Idea Factory: Bell Labs and the Great Age of American Innovation,
  • Gleick, James. (The Information: A History, a Theory, a Flood). Vintage Books, 2012, 544 pages. {{ISBN|978-1400096237}}.

External links

{{Bell System}}{{Telecommunications}}{{Computer music}}{{Western Electric}}{{Coord|40.683404|-74.400744|type:landmark|display=title}}

- content above as imported from Wikipedia
- "Bell Labs" does not exist on GetWiki (yet)
- time: 12:18am EDT - Tue, Oct 15 2019
[ this remote article is provided by Wikipedia ]
LATEST EDITS [ see all ]
Eastern Philosophy
History of Philosophy
M.R.M. Parrott