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Miriam Violet Griffith
Miriam Violet Griffith (11 October 1911 - 9 May 1989) was an electrical engineer, technical author and an early user of ground source heat pumps. She was an expert in the area of heat pumps and was elected a fellow of the Institute of Physics. Early life Miriam Violet Griffith was born on 11 October 1911 in Carlisle, England, eldest daughter of Sarah (née Pearce) and Rev. Leopold David Griffith. By 1921 she lived at The Rectory, Silvington, Cleobury Mortimer, Shropshire with her parents, two sisters, one brother and a 15-year-old servant. Education She attended Casterton School in Carnforth from 1921 - 1927 and then Cheltenham Ladies College for her final years of secondary education. Griffith obtained a degree in Physics from Bedford College, University of London. She was made a Fellow of the institute of Physics prior to 1949. Career In 1935 Griffith was working at the British Electrical and Allied Industries Research Association Laboratories as a junior tec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carlisle
Carlisle ( , ; from xcb, Caer Luel) is a city that lies within the Northern England, Northern English county of Cumbria, south of the Anglo-Scottish border, Scottish border at the confluence of the rivers River Eden, Cumbria, Eden, River Caldew, Caldew and River Petteril, Petteril. It is the administrative centre of the City of Carlisle district which, (along with Cumbria County Council) will be replaced by Cumberland (district), Cumberland Council in April 2023. The city became an established settlement during the Roman Empire to serve forts on Hadrian's Wall. During the Middle Ages, the city was an important military stronghold due to its proximity to the Kingdom of Scotland. Carlisle Castle, still relatively intact, was built in 1092 by William II of England, William Rufus, served as a prison for Mary, Queen of Scots in 1568 and now houses the Duke of Lancaster's Regiment and the Border Regiment Museum. In the early 12th century, Henry I of England, Henry I allowed a pri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
British Electrical And Allied Industries Research Association
Cobham Technical Services (the trading name of Cobham CTS Ltd) is a UK-based technology organisation founded in 1920. It sells products for terrestrial and satellite communications, navigation and sensor applications; technical services and specialised systems for high-voltage and lightning testing; electromagnetic and multiphysics simulation software products. History The history of Cobham Technical Services dates back to 1920 with the incorporation of the British Electrical and Allied Industries Research Association, which became generally known as the ''Electrical Research Association'', or ERA. Initially, ERA’s funding came jointly from government, through the Department of Scientific and Industrial Research, from industry, and from the subscriptions of member companies. During the 1939-1945 war, direct assistance to the war effort was given by ERA, having been recognised by the Ministry of Labour in 1941 as an "essential undertaking". Activities during the war inclu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
British Electrical Engineers
British may refer to: Peoples, culture, and language * British people, nationals or natives of the United Kingdom, British Overseas Territories, and Crown Dependencies. ** Britishness, the British identity and common culture * British English, the English language as spoken and written in the United Kingdom or, more broadly, throughout the British Isles * Celtic Britons, an ancient ethno-linguistic group * Brittonic languages, a branch of the Insular Celtic language family (formerly called British) ** Common Brittonic, an ancient language Other uses *''Brit(ish)'', a 2018 memoir by Afua Hirsch *People or things associated with: ** Great Britain, an island ** United Kingdom, a sovereign state ** Kingdom of Great Britain (1707–1800) ** United Kingdom of Great Britain and Ireland (1801–1922) See also * Terminology of the British Isles * Alternative names for the British * English (other) * Britannic (other) * British Isles * Brit (other) * Briton (d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electrical Engineers
Electrical engineering is an engineering discipline concerned with the study, design, and application of equipment, devices, and systems which use electricity, electronics, and electromagnetism. It emerged as an identifiable occupation in the latter half of the 19th century after commercialization of the electric telegraph, the telephone, and electrical power generation, distribution, and use. Electrical engineering is now divided into a wide range of different fields, including computer engineering, systems engineering, power engineering, telecommunications, radio-frequency engineering, signal processing, instrumentation, photovoltaic cells, electronics, and optics and photonics. Many of these disciplines overlap with other engineering branches, spanning a huge number of specializations including hardware engineering, power electronics, electromagnetics and waves, microwave engineering, nanotechnology, electrochemistry, renewable energies, mechatronics/control, and electrical m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Women Engineers
A woman is an adult female human. Prior to adulthood, a female human is referred to as a girl (a female child or adolescent). The plural ''women'' is sometimes used in certain phrases such as "women's rights" to denote female humans regardless of age. Typically, women inherit a pair of X chromosomes, one from each parent, and are capable of pregnancy and giving birth from puberty until menopause. More generally, sex differentiation of the female fetus is governed by the lack of a present, or functioning, SRY-gene on either one of the respective sex chromosomes. Female anatomy is distinguished from male anatomy by the female reproductive system, which includes the ovaries, fallopian tubes, uterus, vagina, and vulva. A fully developed woman generally has a wider pelvis, broader hips, and larger breasts than an adult man. Women have significantly less facial and other body hair, have a higher body fat composition, and are on average shorter and less muscular than men. Througho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1989 Deaths
File:1989 Events Collage.png, From left, clockwise: The Cypress Street Viaduct, Cypress structure collapses as a result of the 1989 Loma Prieta earthquake, killing motorists below; The proposal document for the World Wide Web is submitted; The Exxon Valdez oil tanker runs aground in Prince William Sound, Alaska, causing a large Exxon Valdez oil spill, oil spill; The Fall of the Berlin Wall begins the downfall of Communism in Eastern Europe, and heralds German reunification; The United States United States invasion of Panama, invades Panama to depose Manuel Noriega; The Singing Revolution led to the independence of the Baltic states of Estonia, Latvia, and Lithuania from the Soviet Union; The stands of Hillsborough Stadium in Sheffield, Yorkshire, where the Hillsborough disaster occurred; 1989 Tiananmen Square protests and massacre, Students demonstrate in Tiananmen Square, Beijing; many are killed by forces of the Chinese Communist Party., 300x300px, thumb rect 0 0 200 200 1989 Loma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1911 Births
A notable ongoing event was the race for the South Pole. Events January * January 1 – A decade after federation, the Northern Territory and the Australian Capital Territory are added to the Commonwealth of Australia. * January 3 ** 1911 Kebin earthquake: An earthquake of 7.7 moment magnitude strikes near Almaty in Russian Turkestan, killing 450 or more people. ** Siege of Sidney Street in London: Two Latvian anarchists die, after a seven-hour siege against a combined police and military force. Home Secretary Winston Churchill arrives to oversee events. * January 5 – Egypt's Zamalek SC is founded as a general sports and Association football club by Belgian lawyer George Merzbach as Qasr El Nile Club. * January 14 – Roald Amundsen's South Pole expedition makes landfall, on the eastern edge of the Ross Ice Shelf. * January 18 – Eugene B. Ely lands on the deck of the USS ''Pennsylvania'' stationed in San Francisco harbor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Woodhead Publishing
Woodhead Publishing Limited was established in 1989 as an independent international publishing company of science and technical books. The company publishes books in association with The Textile Institute, Cambridge International Science Publishing. They have previously published books in association with The Institute of Materials, Minerals and Mining (IOM3) and the European Federation of Corrosion. History In December 2008 Woodhead Publishing acquired the backlist, future titles and imprint of Chandos Publishing in Witney, Oxford, UK, comprising over 250 books in the fields of library and information management, knowledge management and Asian Studies. In 2011 they launched Woodhead Publishing Online, a resource of scientific, technical and information trends, comprising over 800 e-books, containing 12,000 chapters. This resource was hosted by MetaPress, a division of EBSCO Industries Inc. Woodhead (and its imprint Chandos) was acquired by Elsevier in August 2013. Its current ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ground Source Heat Pump
A ground source heat pump (also geothermal heat pump) is a heating/cooling system for buildings that uses a type of heat pump to transfer heat to or from the ground, taking advantage of the relative constancy of temperatures of the earth through the seasons. Ground source heat pumps (GSHPs) – or geothermal heat pumps (GHP) as they are commonly termed in North America – are among the most energy-efficient technologies for providing HVAC and water heating, using far less energy than can be achieved by burning a fuel in a boiler/furnace or by use of resistive electric heaters. Efficiency is given as a coefficient of performance (CoP) which is typically in the range 3 – 6, meaning that the devices provide 3 – 6 units of heat for each unit of electricity used. Setup costs are higher than for other heating systems due to the requirement to install ground loops over large areas or drill bore holes, and for this reason air source heat pumps are often used instead. Thermal proper ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heat Pump
A heat pump is a device that can heat a building (or part of a building) by transferring thermal energy from the outside using a refrigeration cycle. Many heat pumps can also operate in the opposite direction, cooling the building by removing heat from the enclosed space and rejecting it outside. Units that only provide cooling are called air conditioners. When in heating mode, a refrigerant at outside temperature is being compressed. As a result, the refrigerant becomes hot. This thermal energy can be transferred to an indoor unit. After being moved outdoors again, the refrigerant is decompressed — evaporated. It has lost some of its thermal energy and returns colder than the environment. It can now take up the surrounding energy from the air or from the ground before the process repeats. Compressors, fans, and pumps run with electric energy. Common types are air-source heat pumps, ground-source heat pumps, water-source heat pumps and exhaust air heat pumps. They are al ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Women's Engineering Society
The Women's Engineering Society is a United Kingdom professional learned society and networking body for women engineers, scientists and technologists. It was the first professional body set up for women working in all areas of engineering, predating the Society of Women Engineers by around 30 years. History The society was formed on 23rd June 1919, after the First World War, during which many women had taken up roles in engineering to replace men who were involved in the military effort. While it had been seen as necessary to bring women into engineering to fill the gap left by men joining the armed forces, the government, employers, and trades unions were against the continuing employment of women after the war. The Restoration of Pre-War Practices Act 1919 gave soldiers returning from World War I their pre-war jobs back and meant many women could no longer work in roles they were employed to fill during the war. This led a group of seven women, including Lady Katharine Parso ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Winifred Hackett
Winifred Hackett (2 October 1906 – 3 June 1994) was an electrical and aeronautical engineer who worked on guided weapon systems and the DEUCE computer. Early life and education Hackett was born in Kings Norton, an area of Birmingham on 2 October 1906. She attended King Edward's Girls’ High School in Edgbaston, Birmingham. Hackett was an exceptional student and won a scholarship whilst at the school. She originally planned to study architecture and for a time attended UCL with this purpose, but decided to change academic direction, returning to Birmingham to study engineering instead. In 1929 Hackett was the first woman to graduate from the University of Birmingham with an engineering degree, and won the prize for the 'Best Engineer in the University of Birmingham' in 1930. Hackett's academic success resulted in the award of the Bowen Scholarship for Electrical Engineering, which enabled her to stay on to earn an MSc. A further grant from the Institution of Electrical En ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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