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John Madsen (physicist)
Sir John Percival Vissing Madsen List of Fellows of the Australian Academy of Science, FAA (24 March 1879 – 4 October 1969) was an Australian people, Australian Faculty (academic staff), academic, physicist, engineer, mathematician and Officer (armed forces), Army officer. first published in the Australian Dictionary of Biography, Volume 10, (MUP), 1986John Percival Vissing Madsen sydney.edu.auJohn Percival Vissing Madsen, Kt, DSc, FAA Australian Academy of Science originally published in Records of the Australian Academy of Science, vol.2, no.1, 1970. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Fellows Of The Australian Academy Of Science
The Fellowship of the Australian Academy of Science is made up of about 500 Australian scientists. Scientists judged by their peers to have made an exceptional contribution to knowledge in their field may be elected to Fellowship of the Academy. Fellows are often denoted using the post-nominal FAA (Fellow of the Australian Academy of Science). A small number of distinguished foreign scientists with substantial connections to Australian science are elected as Corresponding Members. Fellows are appointed for life; this table also contains deceased fellows. Fellows Corresponding Members References *Australian Academy of ScienceFellowship list External links *http://www.asap.unimelb.edu.au/asap_inf.htm – Australian Science Archives Project *From http://www.asap.unimelb.edu.au/bsparcs/aasmemoirs AAS Biographical Memoirs (1966–1996) *From http://www.sciencearchive.org.au ** ** ** ** ** ** ** ** ** *From https://www.science.org.au ** ** ** ** ** ** ** ** **{{cite web, url ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
George Westinghouse
George Westinghouse Jr. (October 6, 1846 – March 12, 1914) was an American entrepreneur and engineer based in Pennsylvania who created the railway air brake and was a pioneer of the electrical industry, receiving his first patent at the age of 19. Westinghouse saw the potential of using alternating current for electric power distribution in the early 1880s and put all his resources into developing and marketing it. This put Westinghouse's business in direct competition with Thomas Edison, who marketed direct current for electric power distribution. In 1911 Westinghouse received the American Institute of Electrical Engineers's (AIEE) Edison Medal "For meritorious achievement in connection with the development of the alternating current system." Early years George Westinghouse was born in 1846 in Central Bridge, New York (see George Westinghouse Jr. Birthplace and Boyhood Home), the son of Emeline (Vedder) and George Westinghouse Sr., a machine shop owner. His ancestors came f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Second
The second (symbol: s) is the unit of time in the International System of Units (SI), historically defined as of a day – this factor derived from the division of the day first into 24 hours, then to 60 minutes and finally to 60 seconds each (24 × 60 × 60 = 86400). The current and formal definition in the International System of Units ( SI) is more precise:The second ..is defined by taking the fixed numerical value of the caesium frequency, Δ''ν''Cs, the unperturbed ground-state hyperfine transition frequency of the caesium 133 atom, to be when expressed in the unit Hz, which is equal to s−1. This current definition was adopted in 1967 when it became feasible to define the second based on fundamental properties of nature with caesium clocks. Because the speed of Earth's rotation varies and is slowing ever so slightly, a leap second is added at irregular intervals to civil time to keep clocks in sync with Earth's rotation. Uses Analog clocks and watches often ha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gram
The gram (originally gramme; SI unit symbol g) is a unit of mass in the International System of Units (SI) equal to one one thousandth of a kilogram. Originally defined as of 1795 as "the absolute weight of a volume of pure water equal to the cube of the hundredth part of a metre melting ice", the defining temperature (~0 °C) was later changed to 4 °C, the temperature of maximum density of water. However, by the late 19th century, there was an effort to make the Base unit (measurement), base unit the kilogram and the gram a derived unit. In 1960, the new International System of Units defined a ''gram'' as one one-thousandth of a kilogram (i.e., one gram is Scientific notation, 1×10−3 kg). The kilogram, as of 2019, is defined by the International Bureau of Weights and Measures from the fixed numerical value of the Planck constant (), which is kg⋅m2⋅s−1. Official SI symbol The only unit symbol for gram that is recognised by the International S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Centimetre
330px, Different lengths as in respect to the Electromagnetic spectrum, measured by the Metre and its deriveds scales. The Microwave are in-between 1 meter to 1 millimeter. A centimetre (international spelling) or centimeter (American spelling) (SI symbol cm) is a Units of measurement, unit of length in the International System of Units (SI), equal to one hundredth of a metre, ''centi'' being the SI prefix for a factor of . The centimetre was the base unit of length in the now deprecated centimetre–gram–second (CGS) system of units. Though for many physical quantities, SI prefixes for factors of 103—like ''milli-'' and ''kilo-''—are often preferred by technicians, the centimetre remains a practical unit of length for many everyday measurements. A centimetre is approximately the width of the fingernail of an average adult person. Equivalence to other units of length : One millilitre is defined as one cubic centimetre, under the SI system of units. Other uses In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Physical Laboratory (United Kingdom)
The National Physical Laboratory (NPL) is the national measurement standards laboratory of the United Kingdom. It is one of the most extensive government laboratories in the UK and has a prestigious reputation for its role in setting and maintaining physical standards for British industry. Founded in 1900, it is one of the oldest metrology institutes in the world. Research and development work at NPL has contributed to the advancement of many disciplines of science, including the development early computers in the late 1940s and 1950s, construction of the first accurate atomic clock in 1955, and the invention and pioneering implementation of packet switching in the 1960s, which is today one of the fundamental technologies of the Internet. The former heads of NPL include many individuals who were pillars of the British scientific establishment. NPL is based at Bushy Park in Teddington, west London. It is under the management of the Department for Business, Energy and Industria ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Michael Faraday
Michael Faraday (; 22 September 1791 – 25 August 1867) was an English scientist who contributed to the study of electromagnetism and electrochemistry. His main discoveries include the principles underlying electromagnetic induction, diamagnetism and electrolysis. Although Faraday received little formal education, he was one of the most influential scientists in history. It was by his research on the magnetic field around a conductor carrying a direct current that Faraday established the concept of the electromagnetic field in physics. Faraday also established that magnetism could affect rays of light and that there was an underlying relationship between the two phenomena.. the 1911 Encyclopædia Britannica. He similarly discovered the principles of electromagnetic induction, diamagnetism, and the laws of electrolysis. His inventions of electromagnetic rotary devices formed the foundation of electric motor technology, and it was largely due to his efforts that ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
David Forbes Martyn
David Forbes Martyn FAA FRS (27 June 1906 – 5 March 1970) was a Scottish-born Australian physicist and radiographer.R. W. Home,Martyn, David Forbes (1906–1970), '' Australian Dictionary of Biography'', National Centre of Biography, Australian National University. First published in ''Australian Dictionary of Biography'', Volume 15, (MUP), 2000. Education Martyn was educated at Plymouth College and Allan Glen's School, a school in Glasgow noted for its commitment to the teaching of science. In 1923, he entered the Royal College of Science at Imperial College London. Martyn was awarded a Bachelor of Science degree in 1926; a PhD in 1929; and a Doctor of Science degree in 1936. Career Martyn moved to Australia in 1927 to take up one of the first posts in radio research there. He contributed to the development of coastal and air defence RADAR for Australia during World War II. He was awarded the Thomas Ranken Lyle Medal of the Australian National Research Council in 1947 for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Joseph Lade Pawsey
Joseph Lade Pawsey (14 May 1908 – 30 November 1962) was an Australian scientist, radiophysicist and radio astronomer. Education Pawsey was born in Ararat, Victoria to a family of farmers. At the age of 14 he was awarded a government scholarship to study at Wesley College, Melbourne, followed by a scholarship to study at the University of Melbourne. In 1929, he earned his Bachelor of Science degree from the university, followed by a Master of Science in Natural Philosophy in 1931. Pawsey was then awarded an Exhibition Research Scholarship to study at Sidney Sussex College at the University of Cambridge, where he worked under the direction of J.A. Ratcliffe. He studied the effects of the ionosphere on radio propagation and his discovery of the presence of irregularities in the Kennelly-Heaviside Layer proved vital to the later development of this branch of ionospheric physics. In 1935, he was awarded a PhD from Cambridge and in September of that year he married Greta Lenore ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Queensland
, mottoeng = By means of knowledge and hard work , established = , endowment = A$224.3 million , budget = A$2.1 billion , type = Public research university , chancellor = Peter Varghese , vice_chancellor = Deborah Terry , city = Brisbane, Queensland, Australia , students = 55,305 (2019) , undergrad = 35,051 (2019) , postgrad = 19,939 (2019) , faculty = 2,854 , campus = Multiple sites , colours = Purple , affiliations = Group of Eight Universitas 21 ASAIHL EdX , website = , logo = Logo of the University of Queensland.svg , coor = The University of Queensland (UQ, or Queensland University) is a public research university located primarily in Brisbane, the capital city of the Australian state of Queensland. Founded in 1909 by the Queensland parliament, UQ is one of the six sandstone universities, an informal designation of the oldest university in each state. As per 2023, The University of Queensland is ranked as 2nd in Australia and 42nd in the world ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Henry Tizard
Sir Henry Thomas Tizard (23 August 1885 – 9 October 1959) was an English chemist, inventor and Rector of Imperial College, who developed the modern "octane rating" used to classify petrol, helped develop radar in World War II, and led the first serious studies of UFOs. Life Tizard was born in Gillingham, Kent in 1885, the only son of Thomas Henry Tizard (1839–1924), naval officer and hydrographer, and his wife, Mary Elizabeth Churchward. His ambition to join the navy was thwarted by poor eyesight, and he instead studied at Westminster School and Magdalen College, Oxford, where he concentrated on mathematics and chemistry, doing work on indicators and the motions of ions in gases. Tizard graduated in 1908 and at his tutor's suggestion he spent time in Berlin, where he met and formed a close friendship with Frederick Alexander Lindemann, later an influential scientific advisor of Winston Churchill. In 1909, he became a researcher in the Davy–Faraday Laboratory of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Edward Victor Appleton
Sir Edward Victor Appleton (6 September 1892 – 21 April 1965) was an English physicist, Nobel Prize winner (1947) and pioneer in radiophysics. He studied, and was also employed as a lab technician, at Bradford College from 1909 to 1911. He won the Nobel Prize in Physics in 1947 for his seminal work proving the existence of the ionosphere during experiments carried out in 1924. Biography Appleton was born in Bradford, West Riding of Yorkshire, the son of Peter Appleton, a warehouseman, and Mary Wilcock, and was educated at Hanson Grammar School. In 1911, aged 18, he was awarded a scholarship to attend St John's College, Cambridge, where he graduated with First Class Honours in Natural Science with Physics in 1913. He was also a member of Isaac Newton University Lodge. In 1915, he married his first wife, Jessie Appleton (formerly Longson), with whom he had two kids. He remarried three years after her death to Helen Lennie (m. 1965). During the First World War he joined ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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