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Warren Marrison
Warren A. Marrison (21 May 1896 – 27 March 1980) was a Canadian engineer and inventor. Marrison was the co-inventor of the first Quartz clock in 1927. Early life and education Marrison was born in Inverary, Frontenac county, Ontario. He studied at Queen's University in Kingston, Ontario, where he was part of a new program in engineering physics. He graduated in 1920 with a bachelor's degree in physics engineering; his studies were interrupted by World War I when he served in the Royal Flying Corps as a radio technician. Beginning in 1921, he studied at Harvard University, ultimately receiving a master's degree. He worked at first for Western Electric in New York City, but moved to Bell Laboratories in New York beginning in 1925. Quartz clock At Bell Labs in New York, Marrison was working on frequency standards using quartz as a reference. It was in 1927 that he developed the first quartz clock while working with J.W. Horton. The clock used a block of crystal, stimulated by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inverary, Ontario
Inverary is a Compact Rural Community and unincorporated place in South Frontenac, Frontenac County in eastern Ontario, Canada. The community was originally called Storrington post office in 1845, for (the now) geographic Storrington Township in which the community lies. It was renamed to Inverary in 1856 by landowner James Campbell after Inveraray, his ancestral home in Scotland, before being officially incorporated in 1860. Education The Limestone District School Board Limestone District School Board (LDSB, known as English-language Public District School Board No. 27 prior to 1999) is an English public district school board encompassing a region that includes the City of Kingston and the counties of Frontenac ... operates two elementary schools in the area: Perth Road Public School and Storrington Public School. Postal services A post office at 4095 Perth Road in Inverary has two rural routes, as well as general delivery and post office box service. The postal code for In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clockmakers Company
The Worshipful Company of Clockmakers was established under a royal charter granted by King Charles I in 1631. It ranks sixty-first among the livery companies of the City of London, and comes under the jurisdiction of the Privy Council. The company established a library and its museum in 1813, which is the oldest specific collection of clocks and watches worldwide. This is administered by the company's affiliated charity, the Clockmakers’ Charity, and is presently housed on the second floor of London's Science Museum. The modern aims of the company and its museum are charitable and educational, in particular to promote and preserve clockmaking and watchmaking, which as of 2019 were added to the HCA Red List of Endangered Crafts. The Clockmakers’ Museum, comprising a collection of clocks, watches, portraits and ephemera is housed in a new gallery provided by the Science Museum, officially opened by Princess Anne on 22 October 2015. The museum was first established in 1813 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Queen's University At Kingston Alumni
Queens is a borough of New York City. Queens or Queen's may also refer to: Arts and entertainment * Queens (group), a Polish musical group * "Queens" (Saara Aalto song), 2018 * ''Queens'' (novel), by Stephen Pickles, 1984 * "Queens", a song by Caravan Palace from ''Panic'', 2012 * ''The Queens'', the third novel in a planned trilogy in the Ender's Game series * ''Queens'' (film), 2005 * ''The Queens'' (film), a 2015 Chinese romance film based on the novel of the same name * ''Queens'' (American TV series), an American musical drama television series 2021–2022 * ''Queen's'' (TV series), 2007 * ''The Queens'' (TV series), a 2008 Chinese historical drama * '' Queens: The Virgin and the Martyr'', a Spanish and British historical drama television series * Queen's Theatre (other) Places * Queens, West Virginia, U.S. * Queens (electoral district), the name of several Canadian districts * Queens County (other) * Region of Queens Municipality, Nova Scotia, C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
People From Frontenac County
A person ( : people) is a being that has certain capacities or attributes such as reason, morality, consciousness or self-consciousness, and being a part of a culturally established form of social relations such as kinship, ownership of property, or legal responsibility. The defining features of personhood and, consequently, what makes a person count as a person, differ widely among cultures and contexts. In addition to the question of personhood, of what makes a being count as a person to begin with, there are further questions about personal identity and self: both about what makes any particular person that particular person instead of another, and about what makes a person at one time the same person as they were or will be at another time despite any intervening changes. The plural form "people" is often used to refer to an entire nation or ethnic group (as in "a people"), and this was the original meaning of the word; it subsequently acquired its use as a plural form of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canadian Inventors
Canadians (french: Canadiens) are people identified with the country of Canada. This connection may be residential, legal, historical or cultural. For most Canadians, many (or all) of these connections exist and are collectively the source of their being ''Canadian''. Canada is a multilingual and multicultural society home to people of groups of many different ethnic, religious, and national origins, with the majority of the population made up of Old World immigrants and their descendants. Following the initial period of French and then the much larger British colonization, different waves (or peaks) of immigration and settlement of non-indigenous peoples took place over the course of nearly two centuries and continue today. Elements of Indigenous, French, British, and more recent immigrant customs, languages, and religions have combined to form the culture of Canada, and thus a Canadian identity. Canada has also been strongly influenced by its linguistic, geographic, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1980 Deaths
__NOTOC__ Year 198 (CXCVIII) was a common year starting on Sunday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Sergius and Gallus (or, less frequently, year 951 ''Ab urbe condita''). The denomination 198 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years. Events By place Roman Empire *January 28 ** Publius Septimius Geta, son of Septimius Severus, receives the title of Caesar. **Caracalla, son of Septimius Severus, is given the title of Augustus. China *Winter – Battle of Xiapi: The allied armies led by Cao Cao and Liu Bei defeat Lü Bu; afterward Cao Cao has him executed. By topic Religion * Marcus I succeeds Olympianus as Patriarch of Constantinople (until 211). Births * Lu Kai (or Jingfeng), Chinese official and general (d. 269) * Quan Cong, Chinese general and advisor ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1896 Births
Events January–March * January 2 – The Jameson Raid comes to an end, as Jameson surrenders to the Boers. * January 4 – Utah is admitted as the 45th U.S. state. * January 5 – An Austrian newspaper reports that Wilhelm Röntgen has discovered a type of radiation (later known as X-rays). * January 6 – Cecil Rhodes is forced to resign as Prime Minister of the Cape of Good Hope, for his involvement in the Jameson Raid. * January 7 – American culinary expert Fannie Farmer publishes her first cookbook. * January 12 – H. L. Smith takes the first X-ray photograph. * January 17 – Fourth Anglo-Ashanti War: British redcoats enter the Ashanti capital, Kumasi, and Asantehene Agyeman Prempeh I is deposed. * January 18 – The X-ray machine is exhibited for the first time. * January 28 – Walter Arnold, of East Peckham, Kent, England, is fined 1 shilling for speeding at (exceeding the contemporary speed limit of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inventors Hall Of Fame
The National Inventors Hall of Fame (NIHF) is an American not-for-profit organization, founded in 1973, which recognizes individual engineers and inventors who hold a U.S. patent of significant technology. Besides the Hall of Fame, it also operates a museum in Alexandria, Virginia, sponsors educational programs, and a collegiate competition. As of 2020, 603 inventors have been inducted, mostly constituting historic persons from the past three centuries, but including about 100 living inductees. Nominees must hold a U.S. patent of significant contribution to the U.S. welfare, and which advances science and useful arts. The 2020 class included 22 inventors. History The National Inventors Hall of Fame was founded in 1973 on the initiative of H. Hume Mathews, then the chairman of the National Council of Patent Law Associations (now the National Council of Intellectual Property Law Associations). It was launched by Ed Sobey, who was also the first director. In 1974, it gained a m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Synchronous Motor
A synchronous electric motor is an AC electric motor in which, at steady state, the rotation of the shaft is synchronized with the frequency of the supply current; the rotation period is exactly equal to an integral number of AC cycles. Synchronous motors contain multiphase AC electromagnets on the stator of the motor that create a magnetic field which rotates in time with the oscillations of the line current. The rotor with permanent magnets or electromagnets turns in step with the stator field at the same rate and as a result, provides the second synchronized rotating magnet field of any AC motor. A synchronous motor is termed ''doubly fed'' if it is supplied with independently excited multiphase AC electromagnets on both the rotor and stator. The synchronous motor and the induction motor are the most widely used types of AC motors. The difference between the two types is that the synchronous motor rotates at a rate locked to the line frequency since it does not rely on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Horology
Horology (; related to Latin '; ; , interfix ''-o-'', and suffix ''-logy''), . is the study of the measurement of time. Clocks, watches, clockwork, sundials, hourglasses, clepsydras, timers, time recorders, marine chronometers, and atomic clocks are all examples of instruments used to measure time. In current usage, horology refers mainly to the study of mechanical time-keeping devices, while chronometry more broadly includes electronic devices that have largely supplanted mechanical clocks for the best accuracy and precision in time-keeping. People interested in horology are called ''horologists''. That term is used both by people who deal professionally with timekeeping apparatuses (watchmakers, clockmakers), as well as aficionados and scholars of horology. Horology and horologists have numerous organizations, both professional associations and more scholarly societies. The largest horological membership organisation globally is the NAWCC, the National Association of Watc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New York State
New York, officially the State of New York, is a state in the Northeastern United States. It is often called New York State to distinguish it from its largest city, New York City. With a total area of , New York is the 27th-largest U.S. state by area. With 20.2 million people, it is the fourth-most-populous state in the United States as of 2021, with approximately 44% living in New York City, including 25% of the state's population within Brooklyn and Queens, and another 15% on the remainder of Long Island, the most populous island in the United States. The state is bordered by New Jersey and Pennsylvania to the south, and Connecticut, Massachusetts, and Vermont to the east; it has a maritime border with Rhode Island, east of Long Island, as well as an international border with the Canadian provinces of Quebec to the north and Ontario to the northwest. New York City (NYC) is the most populous city in the United States, and around two-thirds of the state's population liv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Flying Corps Canada
The Royal Flying Corps Canada (RFC Canada) was a training organization of the British Royal Flying Corps located in Canada during the First World War. It began operating in 1917. Background As the war progressed, Great Britain found that it needed more trained aircrew and more training facilities. Training was provided both by the ''Curtiss Aviation School'' at Long Branch near Toronto (land plane training) and Hanlan's Point on Toronto Island (for flying boat training), and in the United States. The British realized that thousands of Canadians and Americans had joined British flying operations and more wanted to join, so it made sense to open British air training stations in Canada. Canada also had space for such facilities. After much negotiation with the Canadian government, the RFC, commanded in Canada by Lieutenant-Colonel (later Brigadier-General) Cuthbert Hoare, began operating several training stations in southern Ontario. Stations were opened at Camp Borden (mai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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