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Peter N.T. Wells
Peter Neil Temple Wells CBE DSc FMedSci FREng FIET FInstP FLSW FRS (19 May 1936 in Bristol, England – 22 April 2017) was a British medical physicist who played a major role in the application of ultrasound technology in medicine. Education Wells was educated at Birmingham College of Advanced Technology and the University of Bristol where he was awarded his PhD in 1966. Career and research Wells has made a number of notable contributions to the application of engineering and physics in medicine. He is the originator and developer of instruments for ultrasonic surgery and ultrasonic power measurement, as well as the two-dimensional, articulated-arm ultrasonic general purpose scanner and the water-immersion ultrasonic breast scanner. He demonstrated ultrasonic-pulsed Doppler range gating, and was the discoverer of the ultrasonic Doppler signal characteristic of malignant tumour neovascularisation. He investigated ultrasonic bioeffects and formulated ultrasonic safety g ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bristol
Bristol () is a city, ceremonial county and unitary authority in England. Situated on the River Avon, it is bordered by the ceremonial counties of Gloucestershire to the north and Somerset to the south. Bristol is the most populous city in South West England. The wider Bristol Built-up Area is the eleventh most populous urban area in the United Kingdom. Iron Age hillforts and Roman villas were built near the confluence of the rivers Frome and Avon. Around the beginning of the 11th century, the settlement was known as (Old English: 'the place at the bridge'). Bristol received a royal charter in 1155 and was historically divided between Gloucestershire and Somerset until 1373 when it became a county corporate. From the 13th to the 18th century, Bristol was among the top three English cities, after London, in tax receipts. A major port, Bristol was a starting place for early voyages of exploration to the New World. On a ship out of Bristol in 1497, John Cabot, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ultrasound
Ultrasound is sound waves with frequencies higher than the upper audible limit of human hearing. Ultrasound is not different from "normal" (audible) sound in its physical properties, except that humans cannot hear it. This limit varies from person to person and is approximately 20 kilohertz (20,000 hertz) in healthy young adults. Ultrasound devices operate with frequencies from 20 kHz up to several gigahertz. Ultrasound is used in many different fields. Ultrasonic devices are used to detect objects and measure distances. Ultrasound imaging or sonography is often used in medicine. In the nondestructive testing of products and structures, ultrasound is used to detect invisible flaws. Industrially, ultrasound is used for cleaning, mixing, and accelerating chemical processes. Animals such as bats and porpoises use ultrasound for locating prey and obstacles. History Acoustics, the science of sound, starts as far back as Pythagoras in the 6th century BC, who wrote on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sir Frank Whittle Medal
The Sir Frank Whittle Medal is awarded annually by the Royal Academy of Engineering to an engineer, normally resident in the United Kingdom, for outstanding and sustained achievement which has contributed to the well-being of the nation. The field of activity in which the medal is awarded changes annually. Named after Sir Frank Whittle Air Commodore Sir Frank Whittle, (1 June 1907 – 8 August 1996) was an English engineer, inventor and Royal Air Force (RAF) air officer. He is credited with inventing the turbojet engine. A patent was submitted by Maxime Guillaume in 1921 f ..., the award was instituted in 2001. Previous winners: References {{DEFAULTSORT:Whittle Medal Engineering awards Awards established in 2001 British science and technology awards Royal Academy of Engineering ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Learned Society Of Wales
The Learned Society of Wales (Welsh: Cymdeithas Ddysgedig Cymru) is a learned society and charity that exists to "celebrate, recognise, preserve, protect and encourage excellence in all of the scholarly disciplines", and to serve the Welsh nation. The Learned Society of Wales is Wales's first and only all-embracing national scholarly academy. A registered charity, it was established and launched on 25 May 2010 at the National Museum of Wales and was granted a Royal Charter in 2015. The society is based in Cardiff. It is an independent, self-governing, pan-disciplinary, bilingual organisation operating throughout Wales. Purpose The Society describes its mission as to: * Celebrate, recognise, preserve, protect, and encourage excellence in all scholarly disciplines, and in the professions, industry and commerce, the arts and public service. * Promote the advancement of learning, scholarship, and the dissemination and application of the results of academic enquiry and research ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2009 New Year Honours
The New Year Honours 2009 were announced on 31 December 2008 in the United Kingdom, New Zealand, Cook Islands, Barbados, Grenada, Saint Vincent and the Grenadines, Belize, Antigua and Barbuda, and Saint Christopher and Nevis,Saint Christopher. to celebrate the year past and mark the beginning of 2009. The recipients of honours are displayed here as they were styled before their new honour, and arranged by the country whose ministers advised The Queen on the appointments, then by honour, with grades i.e. Knight/Dame Grand Cross, Knight/Dame Commander ''etc.'' and then divisions i.e. Civil, Diplomatic and Military as and where appropriate. United Kingdom Knights Bachelor * Professor Timothy Robert Peter Brighouse. For services to Education. * Professor David Nicholas Cannadine, lately Queen Elizabeth The Queen Mother Professor, Institute of Historical Research, University of London. For services to Scholarship. * Alexander Crombie, Group Chief Executive, Standard Life. For ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Commander Of The Order Of The British Empire
The Most Excellent Order of the British Empire is a British order of chivalry, rewarding contributions to the arts and sciences, work with charitable and welfare organisations, and public service outside the civil service. It was established on 4 June 1917 by King George V and comprises five classes across both civil and military divisions, the most senior two of which make the recipient either a knight if male or dame if female. There is also the related British Empire Medal, whose recipients are affiliated with, but not members of, the order. Recommendations for appointments to the Order of the British Empire were originally made on the nomination of the United Kingdom, the self-governing Dominions of the Empire (later Commonwealth) and the Viceroy of India. Nominations continue today from Commonwealth countries that participate in recommending British honours. Most Commonwealth countries ceased recommendations for appointments to the Order of the British Empire when the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Institute Of Physics
The Institute of Physics (IOP) is a UK-based learned society and professional body that works to advance physics education, research and application. It was founded in 1874 and has a worldwide membership of over 20,000. The IOP is the Physical Society for the UK and Ireland and supports physics in education, research and industry. In addition to this, the IOP provides services to its members including careers advice and professional development and grants the professional qualification of Chartered Physicist (CPhys), as well as Chartered Engineer (CEng) as a nominated body of the Engineering Council. The IOP's publishing company, IOP Publishing, publishes 85 academic titles. History The Institute of Physics was formed in 1960 from the merger of the Physical Society, founded as the Physical Society of London in 1874, and the Institute of Physics, founded in 1918. The Physical Society of London had been officially formed on 14 February 1874 by Frederick Guthrie, follow ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Creative Commons License
A Creative Commons (CC) license is one of several public copyright licenses that enable the free distribution of an otherwise copyrighted "work".A "work" is any creative material made by a person. A painting, a graphic, a book, a song/lyrics to a song, or a photograph of almost anything are all examples of "works". A CC license is used when an author wants to give other people the right to share, use, and build upon a work that the author has created. CC provides an author flexibility (for example, they might choose to allow only non-commercial uses of a given work) and protects the people who use or redistribute an author's work from concerns of copyright infringement as long as they abide by the conditions that are specified in the license by which the author distributes the work. There are several types of Creative Commons licenses. Each license differs by several combinations that condition the terms of distribution. They were initially released on December 16, 2002, by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Society
The Royal Society, formally The Royal Society of London for Improving Natural Knowledge, is a learned society and the United Kingdom's national academy of sciences. The society fulfils a number of roles: promoting science and its benefits, recognising excellence in science, supporting outstanding science, providing scientific advice for policy, education and public engagement and fostering international and global co-operation. Founded on 28 November 1660, it was granted a royal charter by King Charles II as The Royal Society and is the oldest continuously existing scientific academy in the world. The society is governed by its Council, which is chaired by the Society's President, according to a set of statutes and standing orders. The members of Council and the President are elected from and by its Fellows, the basic members of the society, who are themselves elected by existing Fellows. , there are about 1,700 fellows, allowed to use the postnominal title FRS ( Fellow of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fellow Of The Royal Academy Of Engineering
Fellowship of the Royal Academy of Engineering (FREng) is an award and fellowship for engineers who are recognised by the Royal Academy of Engineering as being the best and brightest engineers, inventors and technologists in the UK and from around the world to promote excellence in engineering and to enhance and support engineering research, policy formation, education and entrepreneurship and other activities that advance and enrich engineering in all its forms. Fellowship is a significant honour. Up to 60 engineers are elected each year by their peers. Honorary and International Fellows are those who have made exceptional contributions to engineering. The criteria for election are stated in the charter, statutes, and regulations document. The essential attributes of excellence in engineering include: * Organisation and department leaders: those with full responsibility on technical decisions, those who have demonstrated significant personal engineering achievements * Top En ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tomography
Tomography is imaging by sections or sectioning that uses any kind of penetrating wave. The method is used in radiology, archaeology, biology, atmospheric science, geophysics, oceanography, plasma physics, materials science, cosmochemistry, astrophysics, quantum information, and other areas of science. The word ''tomography'' is derived from Ancient Greek τόμος ''tomos'', "slice, section" and γράφω ''graphō'', "to write" or, in this context as well, "to describe." A device used in tomography is called a tomograph, while the image produced is a tomogram. In many cases, the production of these images is based on the mathematical procedure tomographic reconstruction, such as X-ray computed tomography technically being produced from multiple projectional radiographs. Many different reconstruction algorithms exist. Most algorithms fall into one of two categories: filtered back projection (FBP) and iterative reconstruction (IR). These procedures give inexact results: ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Doppler Effect
The Doppler effect or Doppler shift (or simply Doppler, when in context) is the change in frequency of a wave in relation to an observer who is moving relative to the wave source. It is named after the Austrian physicist Christian Doppler, who described the phenomenon in 1842. A common example of Doppler shift is the change of pitch heard when a vehicle sounding a horn approaches and recedes from an observer. Compared to the emitted frequency, the received frequency is higher during the approach, identical at the instant of passing by, and lower during the recession. The reason for the Doppler effect is that when the source of the waves is moving towards the observer, each successive wave crest is emitted from a position closer to the observer than the crest of the previous wave. Therefore, each wave takes slightly less time to reach the observer than the previous wave. Hence, the time between the arrivals of successive wave crests at the observer is reduced, causing an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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