|
Dazzle Camouflage
Dazzle camouflage, also known as razzle dazzle (in the U.S.) or dazzle painting, is a type of ship camouflage that was used extensively in World War I, and to a lesser extent in World War II and afterwards. Credited to the British marine artist Norman Wilkinson, though with a rejected prior claim by the zoologist John Graham Kerr, it consisted of complex patterns of geometric shapes in contrasting colours interrupting and intersecting each other. Unlike other forms of camouflage, the intention of dazzle is not to conceal but to make it difficult to estimate a target's range, speed, and heading. Norman Wilkinson explained in 1919 that he had intended dazzle primarily to mislead the enemy about a ship's course and so cause them to take up a poor firing position. Dazzle was adopted by the Admiralty in the UK, and then by the United States Navy. Each ship's dazzle pattern was unique to avoid making classes of ships instantly recognisable to the enemy. The result was that a p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USS West Mahomet (ID-3681) Cropped
SS ''West Mahomet'' was a steel–hull (watercraft), hulled cargo ship which saw service as an auxiliary ship, auxiliary with the U.S. Navy in 1918–19. ''West Mahomet'' was built as part of the United States Shipping Boards World War I emergency wartime shipbuilding program. Completed just too late to see service in the war, the ship was nevertheless commissioned into the Navy as USS ''West Mahomet'' (ID-3681), but saw only a handful of voyages on the Navy's behalf—including a postwar famine relief mission to Romania—before being decommissioned in June 1919. The ship was subsequently placed into merchant service as SS ''West Mahomet'', but with the onset of the Great Depression, she was laid up like many other ships of the period for lack of work. The vessel was scrapped at Rosyth, Scotland in 1938. Construction and design ''West Mahomet'' was built in Seattle, Washington in 1918 at the No. 1 Plant of the Skinner & Eddy Corporation—the 19th in a series of 24 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arthur Lismer
Arthur Lismer, LL.D. (27 June 1885 – 23 March 1969) was an English-Canadian painter, member of the Group of Seven and educator. He is known primarily as a landscape painter and for his paintings of ships in dazzle camouflage. Early life Lismer was born in Sheffield, Yorkshire, England, the son of Harriet and Edward Lismer, a draper's buyer. At age thirteen, he apprenticed at a photo-engraving company. He was awarded a scholarship, and used this time to take evening classes at the Sheffield School of Art from 1898 until 1905. In 1905, he moved to Antwerp, Belgium, where he studied art at the Academie Royale. Lismer immigrated to Canada in 1911, settled in Toronto, Ontario, and took a job with Grip Ltd. where he met Tom Thomson. In May 1914, he went camping with him in Algonquin Park, writing about the trip: Our canoe was a 16 footer Chestnut, canvas covered, roomy & capable of carrying the weight we had to put in it, stores for two weeks, tent, blankets, a cooking oven ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Naval Volunteer Reserve
Royal may refer to: People * Royal (name), a list of people with either the surname or given name * A member of a royal family or royalty Places United States * Royal, Arkansas, an unincorporated community * Royal, Illinois, a village * Royal, Iowa, a city * Royal, Missouri, an unincorporated community * Royal, Nebraska, a village * Royal, Franklin County, North Carolina, an unincorporated area * Royal, Utah, a ghost town * Royal, West Virginia, an unincorporated community * Royal Gorge, on the Arkansas River in Colorado * Royal Township (other) Elsewhere * Mount Royal, a hill in Montreal, Canada * Royal Canal, Dublin, Ireland * Royal National Park, New South Wales, Australia Arts, entertainment, and media * ''Royal'' (Jesse Royal album), 2021 * Royal (Ayo album), 2020 * ''The Royal'', a British medical drama television series * '' The Royal Magazine'', a monthly British literary magazine published between 1898 and 1939 * '' The Raja Saab'', working title ' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mackerel
Mackerel is a common name applied to a number of different species of pelagic fish, mostly from the family Scombridae. They are found in both temperate and tropical seas, mostly living along the coast or offshore in the oceanic environment. Mackerel species typically have deeply forked tails and vertical "tiger-like" stripes on their backs with an Iridescence, iridescent green-blue quality. Many are restricted in their distribution ranges and live in separate populations or Fish stocks, fish stocks based on geography. Some stocks Fish migration, migrate in large Shoaling and schooling, schools along the coast to suitable spawning grounds, where they spawn in fairly shallow waters. After spawning they return the way they came in smaller schools to suitable feeding grounds, often near an area of upwelling. From there they may move offshore into deeper waters and spend the winter in relative inactivity. Other stocks migrate across oceans. Smaller mackerel are forage fish for la ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Concealing-Coloration In The Animal Kingdom
''Concealing-Coloration in the Animal Kingdom: An Exposition of the Laws of Disguise Through Color and Pattern; Being a Summary of Abbott H. Thayer's Discoveries'' is a book published ostensibly by Gerald H. Thayer in 1909, and revised in 1918, but in fact a collaboration with and completion of his father Abbott Handerson Thayer's major work. The book, illustrated artistically by Abbott Thayer, sets out the controversial thesis that all animal coloration has the evolutionary purpose of camouflage. Thayer rejected Charles Darwin's theory of sexual selection, arguing in words and paintings that even such conspicuous animal features as the peacock's tail or the brilliant pink of flamingoes or roseate spoonbills were effective as camouflage in the right light. The book introduced the concepts of disruptive coloration to break up an object's outlines, of masquerade, as when a butterfly mimics a leaf, and especially of countershading, where an animal's tones make it appear flat by co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Abbott Handerson Thayer
Abbott Handerson Thayer (August 12, 1849May 29, 1921) was an American painter, naturalist, and teacher. As a painter of portraits, figures, animals, and landscapes, he enjoyed a certain prominence during his lifetime, and his paintings are represented in major American art collections. He is perhaps best known for his 'angel' paintings, some of which use his children as models. During the last third of his life, he worked together with his son, Gerald Handerson Thayer, on a book about protective coloration in nature, titled '' Concealing-Coloration in the Animal Kingdom''. First published by Macmillan in 1909, then reissued in 1918, it may have had an effect on military camouflage during World War I. However it was roundly mocked by Theodore Roosevelt and others for its assumption that all animal coloration is cryptic. Thayer also influenced American art through his efforts as a teacher, training apprentices in his New Hampshire studio. Early life Thayer was born in Boston t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Countershading
Countershading, or Thayer's law, is a method of camouflage in which animal coloration, an animal's coloration is darker on the top or upper side and lighter on the underside of the body. This pattern is found in many species of mammals, reptiles, birds, fish, and insects, both in predators and in prey. When light falls from above on a uniformly coloured three-dimensional object such as a sphere, it makes the upper side appear lighter and the underside darker, grading from one to the other. This pattern of light and shade makes the object appear solid, and therefore easier to detect. The classical form of countershading, discovered in 1909 by the artist Abbott Handerson Thayer, works by counterbalancing the effects of self-shadowing, again typically with grading from dark to light. In theory this could be useful for military camouflage, but in practice it has rarely been applied, despite the best efforts of Thayer and, later, in the Second World War, of the zoologist Hugh Cott. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coincidence Rangefinder (Warships To-day, 1936)
A coincidence rangefinder or coincidence telemeter is a type of rangefinder that uses the principle of triangulation and an optical device to allow an operator to determine the distance to a visible object. There are subtypes split-image telemeter, inverted image, or double-image telemeter with different principles how two images in a single ocular are compared. Coincidence rangefinders were important elements of fire control systems for long-range naval guns and land-based coastal artillery circa 1890–1960. They were also used in rangefinder cameras. A stereoscopic rangefinder looks similar, but has two eyepieces and uses a different principle, based on binocular vision. The two can normally be distinguished at a glance by the number of eyepieces. Principle Coincidence rangefinders work through the principle of triangulation. In the pictured example, triangulation can be used to determine the range of the ship ''𝑑''. The position of the lenses ''A'' and ''B'' are known, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Northern Mariner
''The Northern Mariner'' (French: ''Le marin du nord'') is a quarterly peer-reviewed academic journal published by the Canadian Nautical Research Society in association with the North American Society for Oceanic History. It covers the study of maritime affairs and the inland waterways of the nations that touch the seas of the northern hemisphere. While the emphasis is on historical essays, the journal publishes articles and research notes which reflect other approaches. Topics of interest include ships, shipbuilding, ship owning, technology, merchant shipping, trade, labour, maritime communities, ports, naval history, fishing, whaling, sealing, underwater archaeology, and maritime biography. The journal also includes book reviews A book review is a form of literary criticism in which a book is merely described (summary review) or analyzed based on content, style, and merit. A book review may be a primary source, an opinion piece, a summary review, or a scholarly view. B .... ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jaguar
The jaguar (''Panthera onca'') is a large felidae, cat species and the only extant taxon, living member of the genus ''Panthera'' that is native to the Americas. With a body length of up to and a weight of up to , it is the biggest cat species in the Americas and the List of largest cats, third largest in the world. Its distinctively marked Animal coat, coat features pale yellow to tan colored fur covered by spots that transition to Rosette (zoology), rosettes on the sides, although a melanistic black coat appears in some individuals. The jaguar's powerful bite allows it to pierce the Turtle shell#Carapace, carapaces of turtles and tortoises, and to employ an unusual killing method: it bites directly through the skull of mammalian prey between the ears to deliver a fatal blow to the brain. The modern jaguar's ancestors probably entered the Americas from Eurasia during the Early Pleistocene via the land bridge that once spanned the Bering Strait. Today, the jaguar's range ex ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zebra
Zebras (, ) (subgenus ''Hippotigris'') are African equines with distinctive black-and-white striped coats. There are three living species: Grévy's zebra (''Equus grevyi''), the plains zebra (''E. quagga''), and the mountain zebra (''E. zebra''). Zebras share the genus '' Equus'' with horses and asses, the three groups being the only living members of the family Equidae. Zebra stripes come in different patterns, unique to each individual. Several theories have been proposed for the function of these patterns, with most evidence supporting them as a deterrent for biting flies. Zebras inhabit eastern and southern Africa and can be found in a variety of habitats such as savannahs, grasslands, woodlands, shrublands, and mountainous areas. Zebras are primarily grazers and can subsist on lower-quality vegetation. They are preyed on mainly by lions, and typically flee when threatened but also bite and kick. Zebra species differ in social behaviour, with plains and mountain z ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Giraffe
The giraffe is a large Fauna of Africa, African even-toed ungulate, hoofed mammal belonging to the genus ''Giraffa.'' It is the Largest mammals#Even-toed Ungulates (Artiodactyla), tallest living terrestrial animal and the largest ruminant on Earth. It is classified under the Family (biology), family Giraffidae, along with its closest extant relative, the okapi. Traditionally, giraffes have been thought of as one species, ''Giraffa camelopardalis'', with nine subspecies. Most recently, researchers proposed dividing them into four Neontology#Extant taxa versus extinct taxa, extant species which can be distinguished by their fur Animal coat, coat patterns. Six valid Lists of extinct species, extinct species of ''Giraffa'' are known from the fossil record. The giraffe's distinguishing characteristics are its extremely long neck and legs, horn-like ossicones, and spotted coat patterns. Its scattered range extends from Chad in the north to South Africa in the south and from Niger in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
