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David Crighton
David George Crighton, FRS (15 November 1942 – 12 April 2000) was a British mathematician and physicist. Life Crighton was born in Llandudno, North Wales, where his mother, Violet Grace Garrison, had been sent because of the bombing of London during the Second World War. He did not become interested in mathematics until his last two years at Watford Grammar School for Boys. He entered St John's College, Cambridge, in 1961 and started lecturing at Woolwich Polytechnic (today University of Greenwich) in 1964, having completed only his bachelor's degree. A few years later he met John Ffowcs Williams and started to work for him at Imperial College London, while simultaneously studying for his doctorate (awarded in 1969) at the same place. In 1974, he was appointed as a research fellow in the Department of Engineering at the University of Cambridge. However, he never took up this post, but instead accepted the chair in applied mathematics at the University of Leeds, which he held ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Llandudno
Llandudno (, ) is a seaside resort, town and community in Conwy County Borough, Wales, located on the Creuddyn peninsula, which protrudes into the Irish Sea. In the 2011 UK census, the community – which includes Gogarth, Penrhyn Bay, Craigside, Glanwydden, Penrhynside, and Bryn Pydew – had a population of 20,701. The town's name means "Church of Saint Tudno". Llandudno is the largest seaside resort in Wales, and as early as 1861 was being called 'the Queen of the Welsh Watering Places' (a phrase later also used in connection with Tenby and Aberystwyth; the word 'resort' came a little later). Historically a part of Caernarfonshire, Llandudno was formerly in the district of Aberconwy within Gwynedd. History The town of Llandudno developed from Stone Age, Bronze Age and Iron Age settlements over many hundreds of years on the slopes of the limestone headland, known to seafarers as the Great Orme and to landsmen as the Creuddyn Peninsula. The origins in recorded history are wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Research Fellow
A research fellow is an academic research position at a university or a similar research institution, usually for academic staff or faculty members. A research fellow may act either as an independent investigator or under the supervision of a principal investigator. Although research fellow positions vary in different countries and academic institutions, it is in general that they are junior researchers who try to develop their research careers under the guidance of senior researchers. United Kingdom In many universities this position is a career grade of a ''Research Career Pathway'', following on from a postdoctoral position such as research associate, and may be open-ended, subject to normal probation regulations. Within such a path, the next two higher career grades are usually senior research fellow and professorial fellow. Although similar to the position of a research fellow, these two positions are research only posts, with the rise of the career grade there will normal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Turbulent Flow
In fluid dynamics, turbulence or turbulent flow is fluid motion characterized by chaotic changes in pressure and flow velocity. It is in contrast to a laminar flow, which occurs when a fluid flows in parallel layers, with no disruption between those layers. Turbulence is commonly observed in everyday phenomena such as surf, fast flowing rivers, billowing storm clouds, or smoke from a chimney, and most fluid flows occurring in nature or created in engineering applications are turbulent. Turbulence is caused by excessive kinetic energy in parts of a fluid flow, which overcomes the damping effect of the fluid's viscosity. For this reason turbulence is commonly realized in low viscosity fluids. In general terms, in turbulent flow, unsteady vortices appear of many sizes which interact with each other, consequently drag due to friction effects increases. This increases the energy needed to pump fluid through a pipe. The onset of turbulence can be predicted by the dimensionless Reyn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sound Wave
In physics, sound is a vibration that propagates as an acoustic wave, through a transmission medium such as a gas, liquid or solid. In human physiology and psychology, sound is the ''reception'' of such waves and their ''perception'' by the brain. Only acoustic waves that have frequencies lying between about 20 Hz and 20 kHz, the audio frequency range, elicit an auditory percept in humans. In air at atmospheric pressure, these represent sound waves with wavelengths of to . Sound waves above 20 kHz are known as ultrasound and are not audible to humans. Sound waves below 20 Hz are known as infrasound. Different animal species have varying hearing ranges. Acoustics Acoustics is the interdisciplinary science that deals with the study of mechanical waves in gasses, liquids, and solids including vibration, sound, ultrasound, and infrasound. A scientist who works in the field of acoustics is an ''acoustician'', while someone working in the field of acoustical ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fluid Mechanics
Fluid mechanics is the branch of physics concerned with the mechanics of fluids ( liquids, gases, and plasmas) and the forces on them. It has applications in a wide range of disciplines, including mechanical, aerospace, civil, chemical and biomedical engineering, geophysics, oceanography, meteorology, astrophysics, and biology. It can be divided into fluid statics, the study of fluids at rest; and fluid dynamics, the study of the effect of forces on fluid motion. It is a branch of continuum mechanics, a subject which models matter without using the information that it is made out of atoms; that is, it models matter from a ''macroscopic'' viewpoint rather than from ''microscopic''. Fluid mechanics, especially fluid dynamics, is an active field of research, typically mathematically complex. Many problems are partly or wholly unsolved and are best addressed by numerical methods, typically using computers. A modern discipline, called computational fluid dynamics (CFD), is dev ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aeroacoustics
Aeroacoustics is a branch of acoustics that studies noise generation via either turbulent fluid motion or aerodynamic forces interacting with surfaces. Noise generation can also be associated with periodically varying flows. A notable example of this phenomenon is the Aeolian tones produced by wind blowing over fixed objects. Although no complete scientific theory of the generation of noise by aerodynamic flows has been established, most practical aeroacoustic analysis relies upon the so-called ''aeroacoustic analogy'', proposed by Sir James Lighthill in the 1950s while at the University of Manchester. whereby the governing equations of motion of the fluid are coerced into a form reminiscent of the wave equation of "classical" (i.e. linear) acoustics in the left-hand side with the remaining terms as sources in the right-hand side. History The modern discipline of aeroacoustics can be said to have originated with the first publication of Lighthill in the early 1950s, when noise ge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wave
In physics, mathematics, and related fields, a wave is a propagating dynamic disturbance (change from equilibrium) of one or more quantities. Waves can be periodic, in which case those quantities oscillate repeatedly about an equilibrium (resting) value at some frequency. When the entire waveform moves in one direction, it is said to be a ''traveling wave''; by contrast, a pair of superimposed periodic waves traveling in opposite directions makes a '' standing wave''. In a standing wave, the amplitude of vibration has nulls at some positions where the wave amplitude appears smaller or even zero. Waves are often described by a ''wave equation'' (standing wave field of two opposite waves) or a one-way wave equation for single wave propagation in a defined direction. Two types of waves are most commonly studied in classical physics. In a ''mechanical wave'', stress and strain fields oscillate about a mechanical equilibrium. A mechanical wave is a local deformation (strain) in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Piano
The piano is a stringed keyboard instrument in which the strings are struck by wooden hammers that are coated with a softer material (modern hammers are covered with dense wool felt; some early pianos used leather). It is played using a keyboard, which is a row of keys (small levers) that the performer presses down or strikes with the fingers and thumbs of both hands to cause the hammers to strike the strings. It was invented in Italy by Bartolomeo Cristofori around the year 1700. Description The word "piano" is a shortened form of ''pianoforte'', the Italian term for the early 1700s versions of the instrument, which in turn derives from ''clavicembalo col piano e forte'' (key cimbalom with quiet and loud)Pollens (1995, 238) and ''fortepiano''. The Italian musical terms ''piano'' and ''forte'' indicate "soft" and "loud" respectively, in this context referring to the variations in volume (i.e., loudness) produced in response to a pianist's touch or pressure on the keys: the grea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Richard Wagner
Wilhelm Richard Wagner ( ; ; 22 May 181313 February 1883) was a German composer, theatre director, polemicist, and conductor who is chiefly known for his operas (or, as some of his mature works were later known, "music dramas"). Unlike most opera composers, Wagner wrote both the libretto and the music for each of his stage works. Initially establishing his reputation as a composer of works in the romantic vein of Carl Maria von Weber and Giacomo Meyerbeer, Wagner revolutionised opera through his concept of the ''Gesamtkunstwerk'' ("total work of art"), by which he sought to synthesise the poetic, visual, musical and dramatic arts, with music subsidiary to drama. He described this vision in a series of essays published between 1849 and 1852. Wagner realised these ideas most fully in the first half of the four-opera cycle ''Der Ring des Nibelungen'' (''The Ring of the Nibelung''). His compositions, particularly those of his later period, are notable for their complex textures, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Faculty Of Mathematics, University Of Cambridge
The Faculty of Mathematics at the University of Cambridge comprises the Department of Pure Mathematics and Mathematical Statistics (DPMMS) and the Department of Applied Mathematics and Theoretical Physics (DAMTP). It is housed in the Centre for Mathematical Sciences site in West Cambridge, alongside the Isaac Newton Institute. Many distinguished mathematicians have been members of the faculty. Some current members DPMMS *Béla Bollobás * John Coates * Thomas Forster *Timothy Gowers * Peter Johnstone *Imre Leader *Gabriel Paternain Statistical Laboratory * John Aston *Geoffrey Grimmett *Frank Kelly *Ioannis Kontoyiannis *Richard Nickl * James Norris *Richard Samworth *David Spiegelhalter * Richard Weber DAMTP *Gary Gibbons * Julia Gog, professor of mathematical biology * Raymond E. Goldstein *Rich Kerswell *Paul Linden * Michael Green * Peter Haynes, fluid dynamicist * John Hinch, fluid dynamicist, retired 2014 *Richard Jozsa *Hugh Osborn *John Papaloizou * Malcolm Perry * D ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jesus College, Cambridge
Jesus College is a constituent college of the University of Cambridge. The college's full name is The College of the Blessed Virgin Mary, Saint John the Evangelist and the glorious Virgin Saint Radegund, near Cambridge. Its common name comes from the name of its chapel, Jesus Chapel. Jesus College was established in 1496 on the site of the twelfth-century Benedictine nunnery of St Mary and St Radegund by John Alcock, then Bishop of Ely. The cockerel is the symbol of Jesus College, after the surname of its founder. For the 300 years from 1560 to 1860, Jesus College was primarily a training college for Church of England clergy. Jesus College has assets of approximately £344m making it Cambridge's fourth-wealthiest college. The college is known for its particularly expansive grounds which include its sporting fields and for its close proximity to its boathouse. Three members of Jesus College have received a Nobel Prize. Two fellows of the college have been appointed to the I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
George Batchelor
George Keith Batchelor FRS (8 March 1920 – 30 March 2000) was an Australian applied mathematician and fluid dynamicist. He was for many years a Professor of Applied Mathematics in the University of Cambridge, and was founding head of the Department of Applied Mathematics and Theoretical Physics (DAMTP). In 1956 he founded the influential ''Journal of Fluid Mechanics'' which he edited for some forty years. Prior to Cambridge he studied at Melbourne High School and University of Melbourne. As an applied mathematician (and for some years at Cambridge a co-worker with Sir Geoffrey Taylor in the field of turbulent flow), he was a keen advocate of the need for physical understanding and sound experimental basis. His ''An Introduction to Fluid Dynamics'' (CUP, 1967) is still considered a classic of the subject, and has been re-issued in the ''Cambridge Mathematical Library'' series, following strong current demand. Unusual for an 'elementary' textbook of that era, it presented a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
