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Fairchild K-20
The K-20 is an aerial photography camera used during World War II, famously from the Enola Gay's tail gunner position to photograph the nuclear mushroom cloud over Hiroshima. Designed by Fairchild Camera and Instrument, approximately 15,000 were manufactured under licence for military contract by Folmer Graflex Corporation in Rochester, New York between 1941 and 1945. The K-20 uses a 5.25″×20′ to 5.25″×200′ roll film, with an image size of 4×5 inches. Lenses were ″ with an adjustable diaphragm and were non-interchangeable; these were made by Kodak, Ilex, or Bausch & Lomb, as available at the time of order. The camera featured the use of a vacuum to keep the film flat. Earlier aerial cameras, from the World War I era, included the Kodak K1, with focal plane shutter, the Fairchild K3, K3A, K3B etc., with in-lens shutter to eliminate distortion, K5 etc., some of which used individual glass plates, some individual sheet film, and some roll film. Similar cameras, from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aerial Photography
Aerial photography (or airborne imagery) is the taking of photographs from an aircraft or other airborne platforms. When taking motion pictures, it is also known as aerial videography. Platforms for aerial photography include fixed-wing aircraft, helicopters, unmanned aerial vehicles (UAVs or "drones"), balloons, blimps and dirigibles, rockets, pigeons, kites, or using action cameras while skydiving or wingsuiting. Handheld cameras may be manually operated by the photographer, while mounted cameras are usually remotely operated or triggered automatically. Aerial photography typically refers specifically to bird's-eye view images that focus on landscapes and surface objects, and should not be confused with air-to-air photography, where one or more aircraft are used as chase planes that "chase" and photograph other aircraft in flight. Elevated photography can also produce bird's-eye images closely resembling aerial photography (despite not actually being aerial shots) when ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Air Ministry
The Air Ministry was a department of the Government of the United Kingdom with the responsibility of managing the affairs of the Royal Air Force, that existed from 1918 to 1964. It was under the political authority of the Secretary of State for Air. Organisations before the Air Ministry The Air Committee On 13 April 1912, less than two weeks after the creation of the Royal Flying Corps (which initially consisted of both a naval and a military wing), an Air Committee was established to act as an intermediary between the Admiralty and the War Office in matters relating to aviation. The new Air Committee was composed of representatives of the two war ministries, and although it could make recommendations, it lacked executive authority. The recommendations of the Air Committee had to be ratified by the Admiralty Board and the Imperial General Staff and, in consequence, the Committee was not particularly effective. The increasing separation of army and naval aviation from 191 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aerial Cameras
Aerial may refer to: Music * ''Aerial'' (album), by Kate Bush * ''Aerials'' (song), from the album ''Toxicity'' by System of a Down Bands *Aerial (Canadian band) * Aerial (Scottish band) * Aerial (Swedish band) Performance art * Aerial silk, apparatus used in aerial acrobatics *Aerialist, an acrobat who performs in the air Recreation and sport * Aerial (dance move) *Aerial (skateboarding) *Aerial adventure park, ropes course with a recreational purpose * Aerial cartwheel (or side aerial), gymnastics move performed in acro dance and various martial arts * Aerial skiing, discipline of freestyle skiing *Front aerial, gymnastics move performed in acro dance Technology Antennas *Aerial (radio), a radio ''antenna'' or transducer that transmits or receives electromagnetic waves **Aerial (television), an over-the-air television reception antenna Mechanical *Aerial fire apparatus, for firefighting and rescue *Aerial work platform, for positioning workers Optical *Aer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reconnaissance
In military operations, reconnaissance or scouting is the exploration of an area by military forces to obtain information about enemy forces, terrain, and other activities. Examples of reconnaissance include patrolling by troops (skirmishers, long-range reconnaissance patrol, U.S. Army Rangers, cavalry scouts, or military intelligence specialists), ships or submarines, crewed or uncrewed reconnaissance aircraft, satellites, or by setting up observation posts. Espionage is usually considered to be different from reconnaissance, as it is performed by non-uniformed personnel operating behind enemy lines. Often called recce (British, Canadian and Australian English) or recon (American English), the word for this activity has at its root the associated verb ''reconnoitre'' or ''reconnoiter''. Etymology The word from the Middle French ''reconoissance''. Overview Reconnaissance conducted by ground forces includes special reconnaissance, armored reconnaissance, amp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pictometry
Pictometry is a patented aerial survey technique for producing oblique georeferenced imagery showing the fronts and sides of buildings and locations on the ground. Photos are captured by low-flying airplanes, depicting up to 12 perspectives (shot from a 40 degree angle) as well as an orthogonal (overhead) view of every location flown. These perspectives are then stitched together to create composite aerial maps that may span many miles of terrain. Because they are captured at an angle, the pixels in the resulting images are trapezoidal, rather than rectangular. This necessitates special software and algorithms to accurately determine objects’ size and position on the maps. Uses Pictometry imagery can be overlaid with various shapefiles and GIS information because every pixel is georeferenced to its exact location on the earth. This allows pictometry imagery to be integrated into many existing GIS software applications for use in many businesses, while creating a much richer dat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orthophoto
An orthophoto, orthophotograph, orthoimage or orthoimagery is an aerial photograph or satellite imagery geometrically corrected ("orthorectified") such that the scale is uniform: the photo or image follows a given map projection. Unlike an uncorrected aerial photograph, an orthophoto can be used to measure true distances, because it is an accurate representation of the Earth's surface, having been adjusted for topographic relief, lens distortion, and camera tilt. Orthophotographs are commonly used in geographic information systems (GIS) as a "map accurate" background image. An orthorectified image differs from "rubber sheeted" rectifications as the latter may accurately locate a number of points on each image but "stretch" the area between so scale may not be uniform across the image. A digital elevation model (DEM) is required to create an accurate orthophoto as distortions in the image due to the varying distance between the camera/sensor and different points on the g ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
F24 Camera
The F24 camera is a 1920s British camera used for aerial reconnaissance by British and Allied armed forces into the mid-1950s. It is widely and erroneously referred to as F.24 or F-24. Design and development The outline design of the F24 camera was carried out by the Royal Aircraft Establishment at Farnborough, and it was introduced in 1925. Detailed design, and most production, was by Williamson Manufacturing Company Ltd of Willesden, Willesden Green, London NW.10. The F24 was designed to be lighter and smaller than the F8 camera of 1919, but the F8 continued to be used in less demanding installations. The main component units of the F24 are a body with roller blind focal plane shutter, gearbox, film magazine, and telephoto lens, lens cone. Image film format is 5"×5", on 5" wide roll film, with magazine capacity up to 250 exposures (the F8 offered images up to 8"×7.5" on 9" wide film). Shutter speed is preset between 1/100s and 1/1000s.Nesbit, 1996 By about 1940, most confi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bird's-eye View
A bird's-eye view is an elevated view of an object or location from a very steep viewing angle, creating a perspective as if the observer were a bird in flight looking downwards. Bird's-eye views can be an aerial photograph, but also a drawing, and are often used in the making of blueprints, floor plans and maps. Before crewed flight was common, the term "bird's eye" was used to distinguish views drawn from direct observation at high vantage locations (e.g. a mountain or tower), from those constructed from an imagined bird's perspectives. Bird's eye views as a genre have existed since classical times. They were significantly popular in the mid-to-late 19th century in the United States and Europe as photographic prints. Terminology The terms aerial view and aerial viewpoint are also sometimes used synonymous with bird's-eye view. The term ''aerial view'' can refer to any view from a great height, even at a wide angle, as for example when looking sideways from an airplan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aviation Photography
Aviation photography is the act of taking images of aircraft, either in flight, or on the ground. Types of aviation photography include air-to-air, ground-to-air, ground-static, and remote photography. Military aviation photography, especially air-to-air, requires additional skills, as the photo and target aircraft often fly at velocities of over Mach 1, while under moderate to high G. Types Ground-static In ground-static photography, photos of stationary aircraft are taken by photographers on the ground. Photos can be of aircraft exteriors, interiors, and aircraft details. The photographer has full control over lighting, aircraft placement, camera angles, and background. Involving other subjects such as the pilot or other aircraft is much easier to accomplish in ground-static photography than in other forms of aerial photographyAviation Gallery Airport Terminal Photography from an airport terminal is shooting through the terminal window, usually waiting for a flight. Some ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aerial Landscape Art
::''(This article concerns painting and other non-photographic media. Otherwise, see aerial photography)'' Aerial landscape art includes paintings and other visual arts which depict or evoke the appearance of a landscape from a perspective above it—usually from a considerable distance—as it might be viewed from an aircraft or spacecraft. Sometimes the art is based not on direct observation but on aerial photography, or on maps created using satellite imagery. This kind of landscape art hardly existed before the 20th century; its modern development coincided with the advent of human transport which allowed for actual overhead views of large landscapes. Aerial landscapes are landscapes as seen from the sky. The earliest depictions of aerial landscapes are maps, or somewhat map-like artworks, which show a landscape from an imagined bird's-eye viewpoint. For example, Australian Aborigines, beginning in very ancient times, created "country" landscapes—aerial landscapes depicti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aerial Archaeology
Aerial archaeology is the study of archaeological remains by examining them from a higher altitude. In present day, this is usually achieved by satellite images or through the use of drones. Details Aerial Archaeology involves interpretation and image analysis of photographic (and other kinds of images), in field research to understand archaeological features, sites, and landscapes. It enables exploration and examination of context and large land areas, on a scale unparalleled by other archaeological methods. The AARG (Aerial Archaeology Research Group) boasts that 'more archaeological features have been found worldwide through aerial photography than by any other means of survey'. Aerial archaeological survey combines data collection and data analysis. The umbrella term 'Aerial images' includes traditional aerial photographs, satellite images, multispectral data (which captures image data within specific wavelength ranges across the electromagnetic spectrum) and hyperspectral ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Canadian Naval Volunteer Reserve
The Royal Canadian Navy Volunteer Reserve (RCNVR) was a naval reserve force of the Royal Canadian Navy, which replaced the Royal Navy Canadian Volunteer Reserve (RNCVR). Foundation The RCNVR was created in 1923. The organization was established by Rear-Admiral Walter Hose in a time when the Navy was under drastic budget cuts. Hose saw the establishment of a reserve force as a great way for the fledgling Canadian Navy to build support from coast to coast. Thus he established Naval Reserve Divisions in every major Canadian city. The initial authorized strength of the RCNVR was 1,000 all ranks. Fifteen Canadian cities were earmarked for a division. Most were to be of “Half-Company” strength, which was 50, all ranks. These cities were Calgary, Charlottetown, Edmonton, Halifax, Hamilton, Ottawa, Prince Rupert, Quebec City, Regina, Saint John, Saskatoon and Vancouver. Three cities were ordered to man to a “Company” strength, which was 100, all ranks. These cities were T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
