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Cooper's Law
Martin Cooper (born December 26, 1928) is an American engineer. He is a pioneer in the wireless communications industry, especially in radio spectrum management, with eleven patents in the field.Encyclopedia of World Biography, 2008 encyclopedia.com On April 3, 1973, Cooper placed the first public call from a handheld portable cell phone while working at , from a Manhattan sidewalk to his counterpart at competitor . [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chicago
Chicago is the List of municipalities in Illinois, most populous city in the U.S. state of Illinois and in the Midwestern United States. With a population of 2,746,388, as of the 2020 United States census, 2020 census, it is the List of United States cities by population, third-most populous city in the United States after New York City and Los Angeles. As the county seat, seat of Cook County, Illinois, Cook County, the List of the most populous counties in the United States, second-most populous county in the U.S., Chicago is the center of the Chicago metropolitan area, often colloquially called "Chicagoland" and home to 9.6 million residents. Located on the shore of Lake Michigan, Chicago was incorporated as a city in 1837 near a Chicago Portage, portage between the Great Lakes and the Mississippi River, Mississippi River watershed. It grew rapidly in the mid-19th century. In 1871, the Great Chicago Fire destroyed several square miles and left more than 100,000 homeless, but ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Korean War
The Korean War (25 June 1950 – 27 July 1953) was an armed conflict on the Korean Peninsula fought between North Korea (Democratic People's Republic of Korea; DPRK) and South Korea (Republic of Korea; ROK) and their allies. North Korea was supported by China and the Soviet Union, while South Korea was supported by the United Nations Command (UNC) led by the United States. The conflict was one of the first major proxy wars of the Cold War. Fighting ended in 1953 with an armistice but no peace treaty, leading to the ongoing Korean conflict. After the end of World War II in 1945, Korea, which had been a Korea under Japanese rule, Japanese colony for 35 years, was Division of Korea, divided by the Soviet Union and the United States into two occupation zones at the 38th parallel north, 38th parallel, with plans for a future independent state. Due to political disagreements and influence from their backers, the zones formed their governments in 1948. North Korea was led by Kim Il S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phone Calls
A telephone call, phone call, voice call, or simply a call, is the effective use of a connection over a telephone network between the calling party and the called party. Telephone calls are the form of human communication that was first enabled by the development of the telephone and several inventions in the mid- to late-19th century. Initial technology involved point-to-point electrical wire connections between telephone installations, until centralized exchanges evolved where Switchboard operator, telephone operators established each interconnection manually at a telephone switchboard after asking the calling party for their call destination. After the invention of automatic telephone exchanges in the 1890s, the process became increasingly automated, eventually leading to the widespread adoption of digital exchanges in the second half of the 20th century, including the transition to wireless communication via mobile telephone networks and cellular networks. With the developm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Popular Science
Popular science (also called pop-science or popsci) is an interpretation of science intended for a general audience. While science journalism focuses on recent scientific developments, popular science is more broad ranging. It may be written by professional science journalists or by scientists themselves. It is presented in many forms, including books, film and television documentaries, magazine articles, and web pages. History Before the modern specialization and professionalization of science, there was often little distinction between "science" and "popular science", and works intended to share scientific knowledge with a general reader existed as far back as Greek and Roman antiquity. Without these popular works, much of the scientific knowledge of the era might have been lost. For example, none of the original works of the Greek astronomer Eudoxus (4th century BC) have survived, but his contributions were largely preserved due to the didactic poem '' Phenomena'' writte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
BBC News
BBC News is an operational business division of the British Broadcasting Corporation (BBC) responsible for the gathering and broadcasting of news and current affairs in the UK and around the world. The department is the world's largest broadcast news organisation and generates about 120 hours of radio and television output each day, as well as online news coverage. The service has over 5,500 journalists working across its output including in 50 foreign news bureaus where more than 250 foreign correspondents are stationed. Deborah Turness has been the CEO of news and current affairs since September 2022. In 2019, it was reported in an Ofcom report that the BBC spent £136m on news during the period April 2018 to March 2019. BBC News' domestic, global and online news divisions are housed within the largest live newsroom in Europe, in Broadcasting House in central London. Parliamentary coverage is produced and broadcast from studios in London. Through BBC English Regions, th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Joel S
Joel or Yoel is a name meaning "Yahweh Is God" in Hebrew and may refer to: * Joel (given name), including a list of people named Joel or Yoel * Joel (surname), a surname * Joel (footballer, born 1904), Joel de Oliveira Monteiro, Brazilian football goalkeeper * Joel (footballer, born 1980), Joel Bertoti Padilha, Brazilian football centre-back * Joel (prophet), a prophet of ancient Israel ** Book of Joel, a book in the Jewish Tanakh, and in the Christian Bible, ascribed to the prophet * Joel, Georgia Joel is an unincorporated community in Carroll County, in the U.S. state of Georgia Georgia most commonly refers to: * Georgia (country), a country in the South Caucasus * Georgia (U.S. state), a state in the southeastern United States Geor ..., a community in the United States * Joel, Wisconsin, a community in the United States {{disambiguation, hn, geo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AllianceBernstein
AllianceBernstein Holding L.P. (AB) is a global asset management firm providing investment management and research services worldwide to institutional, high-net-worth and Investor, retail investors. AllianceBernstein's headquarters are located in Nashville, Tennessee; the firm also has locations throughout the world. It has approximately in assets under management . History Origins AllianceBernstein traces its origins back to the founding of Sanford C. Bernstein in 1967 as an investment-management firm for private clients. Sanford C. Bernstein & Company was originally co-founded by Zalman Bernstein, Paul P. Bernstein, Shepard D. Osherow, Roger Hertog and Lewis A. Sanders. Alliance Capital was founded in 1971 when the investment-management department of Donaldson, Lufkin & Jenrette, Inc. merged with the investment-advisory business of Moody's Investors Service, Moody's Investor Services, Inc. 2000–2020 In October 2000, Alliance Capital acquired Sanford C. Bernstein. A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Burlington Industries
Burlington Industries, formerly Burlington Mills, is a diversified American fabric maker based in Greensboro, North Carolina. Founded by J. Spencer Love in Burlington, North Carolina in 1923, the company is a subsidiary of Elevate Textiles and has operations in the United States and China. History On November 6, 1923 J. Spencer Love founded a textile corporation in Burlington, North Carolina. Love and his father brought to Burlington $50,000 worth of machinery from a factory they had sold in Gastonia, NC, and also invested $200,000 that they had earned from the sale of the Gastonia plant, as well as selling an additional $200,000 worth of stock to local residents. In early 1924 Love began construction on the Pioneer Plant and a mill village of 70 houses known as Piedmont Heights. The mill opened with about 200 workers. The operation initially produced cotton products without much success, but the company's situation improved once Love adopted rayon as the mill's fabric for ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hilton Worldwide
Hilton Worldwide Holdings Inc. is an American multinational hospitality company that manages and franchises a broad portfolio of hotels, resorts, and timeshare properties. Founded by Conrad Hilton in May 1919, the company is now led by Christopher J. Nassetta. Hilton is headquartered in Tysons, Virginia, United States. As of December 31, 2023, the company's portfolio includes 7,530 properties (including timeshare properties) with 1,182,937 rooms in 118 countries and territories. Hilton owns or leases 51 properties, manages 800 properties, and franchises out 6,679 properties to independent franchisees or companies. Hilton has 22 brands across different market segments, including Conrad Hotels & Resorts, Canopy by Hilton, Curio, Hilton Hotels & Resorts, DoubleTree by Hilton, Embassy Suites by Hilton, Hilton Garden Inn, Hampton by Hilton, Homewood Suites by Hilton, Home2 Suites by Hilton, Hilton Grand Vacations Club, Hilton Vacation Club, Hilton Club, LXR Hotels and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Francis Mitchell
Patents U.S. Patent 2,833,994 July 2, 1954, for High Frequency Long-Line Variably End-Loaded with Clarence P. Pipes.U.S.Patent 2,912,573 November 10, 1959, for Receiver having frequency and amplitude modulation detecting.U.S. Patent 3,087,117 April 23, 1963, for Portable Transmitter Apparatus with Selective.U.S. Patent 2,975,274 March 14, 1961, for Frequency Modulation Radio Receiver.U.S. Patent 3,126,514 October 13, 1961, for Noise Reducing system with Jack Germain. (Germain retired as director of quality assurance.)U.S. Patent 3,906,166 September 16, 1975, for a Radio Telephone System, the cell phone.U.S. Patent 5,650,776 July 22, 1997, for a Communications Receiver with Thomas F. Holmes Family and early years He was born in Chicago, Illinois, the son of Catholic Irish immigrants,Stephen Miller"John Francis Mitchell Retirement" ''The Wall Street Journal'', June 20–21, 2009 William Mitchell of Sligo and Bridget Keane, of Listowel. He was married to Margaret and had three childr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DynaTAC 8000x
The DynaTAC is a series of cellular telephones manufactured by Motorola from 1983 to 1994. Unveiled on March 6, 1983, the DynaTAC was the first commercially available handheld cellular phone. A full charge took roughly 10 hours, and it offered 30 minutes of talk time. It also offered a LED display for dialing or recall of one of 30 phone numbers. It was priced at US$3,995 in 1984, its commercial release year, equivalent to $ in . Several models followed, starting in 1985 with the 8000s and continuing with periodic updates of increasing frequency until 1993's Classic II. The DynaTAC was replaced in most roles by the much smaller MicroTAC when it was first introduced in 1989, and by the time of the StarTAC's release in 1996, it was obsolete. Name DynaTAC was an abbreviation of "Dynamic Adaptive Total Area Coverage". The TAC abbreviation would later also be used on the MicroTAC, StarTAC and TeleTAC lines of products. History The first cellular phone was the culmination of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
