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Geometric dimensioning and tolerancing (GD&T) is a system for defining and communicating engineering tolerances via a symbolic language on engineering drawings and computer-generated 3D models that describes a physical object's nominal geometry and the permissible variation thereof. GD&T is used to define the nominal (theoretically perfect ...
Joseph John O'Connell (1861–1959), U.S. – number of inventions relating to telephony and electrical engineering; Theophil Wilgodt Odhner (1845–1903), Sweden/Russia – the Odhner Arithmometer, a mechanical calculator; Paul Offit (born 1951), U.S., along with Fred Clark and Stanley Plotkin, invented a pentavalent Rotavirus vaccine
In 1956, a large property in Beaverton became available, and the company's employee retirement trust purchased the land and leased it back to the company. [10] Construction began in 1957 and on May 1, 1959, Tektronix moved into its new Beaverton headquarters campus, [10] on a 313-acre (1.27 km 2) site which came to be called the Tektronix Industrial Park.
The Pearl District was first named in print in March 1987, in an article titled “The Pearl District” by Terry Hammond in The Rose Arts Magazine, a free local periodical in Portland. [10] Marty Smith uncovered the origin story and corrected rumors in his humorous Dr. Know column in Willamette Week in January 2014.
Jeanne Lee (1939–2000), U.S. jazz singer; Jeanne Lee Crews (born 1940), U.S. aerospace engineer; Jeannie Cho Lee (born 1968), Korean-American Hongkonger journalist; Jeannie T. Lee, U.S. geneticist; All pages with titles beginning with Jean Lee; All pages with titles containing Jean Lee; Jeannette Lee (disambiguation)
James T. Russell (born 1931) is an American inventor. He earned a BA in physics from Reed College in Portland in 1953. He joined General Electric 's nearby labs in Richland, Washington , where he initiated many types of experimental instrumentation.
Invented the first successful powered fixed-wing aircraft, upon which further aircraft designs, methods of flight, and aircraft control systems were based. Air conditioning: Willis Carrier [105] Battery: Alessandro Volta [106] Invented the first electrical battery, the Voltaic pile. Canning: Nicolas Appert: Chronograph: George Graham [36] [107]
Jean Amédée Hoerni (September 26, 1924 – January 12, 1997) was a Swiss-born American engineer. He was a silicon transistor pioneer, and a member of the " traitorous eight ". He developed the planar process , an important technology for reliably fabricating and manufacturing semiconductor devices , such as transistors and integrated circuits .