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Airy Family
Airy may refer to: * Sir George Biddell Airy (1801–1892), British Astronomer Royal from 1835 to 1881, for whom the following features, phenomena, and theories are named: ** Airy (lunar crater) ** Airy (Martian crater) ** Airy-0, a smaller crater within the previous one on Mars, and which defines the prime meridian of the planet ** Airy wave theory, a linear theory describing the propagation of "gravity waves" on the surface of a fluid ** Airy disk, a diffraction pattern in optics ** Airy beam, a non-spreading, transversely accelerating optical wavepacket ** Airy function, a mathematical function ** Airy points, support points chosen to minimize the distortion of the length of a physical standard (such as the International Prototype Meter) * Anna Airy (1882–1964), British artist * Christopher Airy (1934–2025), British Army officer * Airy, a character in the video game ''Bravely Default ''Bravely Default'', known in Japan as ''Bravely Default: Flying Fairy'', is a 2012 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
George Biddell Airy
Sir George Biddell Airy (; 27 July 18012 January 1892) was an English mathematician and astronomer, as well as the Lucasian Professor of Mathematics from 1826 to 1828 and the seventh Astronomer Royal from 1835 to 1881. His many achievements include work on planetary orbits, measuring the mean density of the Earth, a method of solution of two-dimensional problems in solid mechanics and, in his role as Astronomer Royal, establishing Greenwich as the location of the prime meridian. Biography Airy was born at Alnwick in Northumberland, one of a long line of Airys who traced their descent back to a family of the same name residing at Kentmere, in Westmorland, in the 14th century. The branch to which he belonged, having suffered in the English Civil War, moved to Lincolnshire and became farmers. Airy was educated first at elementary schools in Hereford, and afterwards at Colchester Royal Grammar School. An introverted child, Airy gained popularity with his schoolmates through his grea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Airy (lunar Crater)
LRO WAC mosaic Oblique view from Apollo 14 Vicinity of Airy, as viewed from the Bayfordbury Observatory Airy is a lunar impact crater located in the southern highlands. It is named in honour of British astronomer George Biddell Airy Sir George Biddell Airy (; 27 July 18012 January 1892) was an English mathematician and astronomer, as well as the Lucasian Professor of Mathematics from 1826 to 1828 and the seventh Astronomer Royal from 1835 to 1881. His many achievements inc .... It forms the southernmost member of a chain of craters consisting of Vogel, Argelander, and Airy. A little further to the south lies Donati. Airy has a worn, and somewhat polygonal rim that it broken at the northern and southern ends. It has a fractured floorThe geologic history of the Moon, 1987, Wilhelms, Don E.; with sections by McCauley, John F.; Trask, Newell J. USGS Professional Paper: 1348.online and a central peak. Satellite craters By convention these features are identified on lu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Airy (Martian Crater)
Airy may refer to: * Sir George Biddell Airy (1801–1892), British Astronomer Royal from 1835 to 1881, for whom the following features, phenomena, and theories are named: ** Airy (lunar crater) ** Airy (Martian crater) ** Airy-0, a smaller crater within the previous one on Mars, and which defines the prime meridian of the planet ** Airy wave theory, a linear theory describing the propagation of "gravity waves" on the surface of a fluid ** Airy disk, a diffraction pattern in optics ** Airy beam, a non-spreading, transversely accelerating optical wavepacket ** Airy function, a mathematical function ** Airy points, support points chosen to minimize the distortion of the length of a physical standard (such as the International Prototype Meter) * Anna Airy (1882–1964), British artist * Christopher Airy (1934–2025), British Army officer * Airy, a character in the video game ''Bravely Default'' * Airy (musician), South Korean indie pop musician See also * Airey (other) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Airy-0
Airy-0 is a crater inside the larger Airy Crater on Mars, whose location historically defined the Martian prime meridian. It is about 0.5 km (0.3 mile) across and lies within the dark region Sinus Meridiani, one of the early albedo features to be identified on Mars. In 2018, the IAU Working Group on Cartographic Coordinates and Rotational Elements recommended setting the longitude of the Viking 1 lander (47.95137° west) as the reference line. This definition maintains the position of the center of Airy-0 at 0° longitude, within the tolerance of current cartographic uncertainties. Merton Davies tied this crater into an extensive geodetic control network of the planet Mars based on Mariner 9 and earlier photographs. The Mariner 9 Geodesy/Cartography Group proposed that the prime meridian of Mars be defined by the center of Airy-0, which was selected by Harold Masursky, Gerard de Vaucouleurs, and Merton Davies at a Group meeting on 14 August 1972. It was named in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Airy Wave Theory
In fluid dynamics, Airy wave theory (often referred to as linear wave theory) gives a linear system, linearised description of the wave propagation, propagation of gravity waves on the surface of a homogeneous fluid layer. The theory assumes that the fluid layer has a uniform mean depth, and that the fluid flow is inviscid, Incompressible flow, incompressible and irrotational. This theory was first published, in correct form, by George Biddell Airy in the 19th century. Airy wave theory is often applied in Offshore construction, ocean engineering and coastal engineering for the modelling of random sea states – giving a description of the wave kinematics and dynamics (mechanics), dynamics of high-enough accuracy for many purposes. Further, several perturbation theory, second-order nonlinear system, nonlinear properties of surface gravity waves, and their propagation, can be estimated from its results. Airy wave theory is also a good approximation for tsunami waves in the ocean, befo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Airy Disk
In optics, the Airy disk (or Airy disc) and Airy pattern are descriptions of the best-focus (optics), focused Point source#Light, spot of light that a perfect lens (optics), lens with a circular aperture can make, limited by the diffraction of light. The Airy disk is of importance in physics, optics, and astronomy. The diffraction pattern resulting from a uniformly illuminated, circular aperture has a bright circle of confusion, central region, known as the Airy disk, which together with the series of concentric objects, concentric rings around is called the Airy pattern. Both are named after George Biddell Airy. The disk and rings phenomenon had been known prior to Airy; John Herschel described the appearance of a bright star seen through a telescope under high magnification for an 1828 article on light for the ''Encyclopedia Metropolitana'': Airy wrote the first full theoretical treatment explaining the phenomenon (his 1835 "On the Diffraction of an Object-glass with Circul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Airy Beam
An Airy beam, is a propagation invariant wave whose main intensity lobe propagates along a curved parabolic trajectory while being resilient to perturbations (self-healing). Physical description A cross section of an ideal Airy beam would reveal an area of principal intensity, with a series of adjacent, less luminous areas trailing off to infinity. In reality, the beam is truncated so as to have a finite composition. As the beam propagates, it does not diffract, i.e., does not spread out. The Airy beam also has the characteristic of freely accelerating. As it propagates, it bends so as to form a parabolic arc. History The term "Airy beam" derives from the Airy integral, developed in the 1830s by Sir George Biddell Airy to explain optical caustics such as those appearing in a rainbow. The Airy waveform was first theorized in 1979 by M. V. Berry and Nandor Balazs, Nándor L. Balázs. They demonstrated a nonspreading Airy wave packet solution to the time--dependent Schrödinger equ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Airy Function
In the physical sciences, the Airy function (or Airy function of the first kind) is a special function named after the British astronomer George Biddell Airy (1801–1892). The function Ai(''x'') and the related function Bi(''x''), are Linear independence, linearly independent solutions to the differential equation \frac - xy = 0 , known as the Airy equation or the Stokes equation. Because the solution of the linear differential equation \frac - ky = 0 is oscillatory for and exponential for , the Airy functions are oscillatory for and exponential for . In fact, the Airy equation is the simplest second-order linear differential equation with a turning point (a point where the character of the solutions changes from oscillatory to exponential). Definitions For real values of , the Airy function of the first kind can be defined by the improper integral, improper Riemann integral: \operatorname(x) = \dfrac\int_0^\infty\cos\left(\dfrac + xt\right)\, dt\equiv \dfrac \lim_ \in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Airy Points
Airy points (after George Biddell Airy) are used for precision measurement (metrology) to support a length standard in such a way as to minimise bending or drop of a horizontally supported beam. Choice of support points A kinematic support for a one-dimensional beam requires exactly two support points. Three or more support points will not share the load evenly (unless they are hinged in a non-rigid whiffle tree or similar). The position of those points can be chosen to minimize various forms of gravity deflection. A beam supported at the ends will sag in the middle, resulting in the ends moving closer together and tilting upward. A beam supported only in the middle will sag at the ends, making a similar shape but upside down. Airy points Supporting a uniform beam at the Airy points produces zero angular deflection of the ends. The Airy points are symmetrically arranged around the centre of the length standard and are separated by a distance equal to : 1/\sqrt=0.5 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anna Airy
Anna Airy (6 June 1882 – 23 October 1964) was an English oil painter, pastel artist and etcher. She was one of the first women officially commissioned as a war artist and was recognised as one of the leading women artists of her generation. Early life and education Anna Airy was born on 6 June 1882 in Greenwich, London, the daughter of Anna ''(née'' Listing) and Wilfrid Airy, an engineer who worked on Orwell Park Observatory. Her paternal grandparents were Richarda and George Biddell Airy, the Astronomer Royal. Her maternal grandfather was Professor Johann Benedict Listing of the University of Göttingen and her parents met through her grandparents' European scientific connections and married in Göttingen on 27 April 1881. Airy's German mother died a fortnight after her birth and baby Anna was raised by two of her paternal aunts, Christabel and Annot Airy. Her aunts were both artists and encouraged her interest, as did her father who Airy later remembered promising "if I per ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Christopher Airy
Major General Sir Christopher John Airy, (8 March 1934 – 7 April 2025) was a British Army officer who served as General Officer Commanding the London District and Major-General commanding the Household Division from 1986 to 1989. Military career Educated at Marlborough College and the Royal Military Academy Sandhurst, Airy was commissioned into the Grenadier Guards in 1954. Airy became personal military assistant to the Secretary of State for War in 1960, deputy assistant adjutant-general and regimental adjutant in 1967 and brigade major of the 4th Guards Brigade in 1971. In 1974 he transferred to the Scots Guards on appointment as commanding officer of the 1st Battalion. Two years later he became Military Assistant to the Master-General of the Ordnance. In 1979 Airy became commander of the 5th Field Force, and in 1982 assistant chief of staff at United Kingdom Land Forces. Promoted to major general in 1983, he served at the Royal College of Defence Studies, before becomi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bravely Default
''Bravely Default'', known in Japan as ''Bravely Default: Flying Fairy'', is a 2012 role-playing video game developed by Silicon Studio and published by Square Enix for the Nintendo 3DS. It was originally released in 2012 and later rereleased as an expanded edition in 2013 subtitled ''For the Sequel'' in Japan. ''For the Sequel'' was later released in Europe, Australia, and North America in 2014 simply titled as ''Bravely Default'' and published by Nintendo in said regions. The gameplay uses a Turns, rounds and time-keeping systems in games#Turn-based, turn-based battle system and job system, in addition to incorporating options to combine job abilities and adjust battle speed and random encounter rates. A High-definition video, high-definition Video-game remaster, remaster developed by Cattle Call (company), Cattle Call, titled ''Bravely Default Flying Fairy HD Remaster'', was released as a launch title for Nintendo Switch 2 in 2025. ''Bravely Default'' is set in the world of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
