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HORN
Horn most often refers to: * Horn (acoustic), a conical or bell shaped aperture used to guide sound ** Horn (instrument), collective name for tube-shaped wind musical instruments * Horn (anatomy), a pointed, bony projection on the head of various animals, either the "true" horn, or other horn-like growths ** Horn, a colloquial reference to keratin, the substance that is the main component of the tissue that sheaths the bony core of horns and hoofs of various animals Horn may also refer to: Audio * Horn loudspeaker * Vehicle horn ** Train horn Personal name * Horn (surname) * Freyja, also known as ''Hörn'', a Norse goddess of love, beauty, fertility, war and death Places * Cape Horn, the southernmost point of South America * Horn of Africa, a peninsula in northeast Africa * Horn (district), a district of the state of Lower Austria in Austria ** Horn, Austria, a small town, capital of the Horn District * Horn, Germany, a municipality in Rhineland-Palatinate, Germany ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Horn (instrument)
A horn is any of a family of musical instruments made of a tube, usually made of metal and often curved in various ways, with one narrow end into which the musician blows, and a wide end from which sound emerges. In horns, unlike some other brass instruments such as the trumpet, the bore gradually increases in width through most of its length—that is to say, it is conical rather than cylindrical. In jazz and popular-music contexts, the word may be used loosely to refer to any wind instrument, and a section of brass or woodwind instruments, or a mixture of the two, is called a horn section in these contexts. Types Variations include: * Lur (prehistoric) * Shofar *Roman horns: **Cornu ** Buccina * Dung chen * Dord * Sringa *Nyele * Wazza * Alphorn *Cornett * Serpent * Ophicleide *Natural horn ** Bugle **Post horn *French horn * Vienna horn * Wagner tuba * Saxhorns, including: ** Alto horn (UK: tenor horn), pitched in E ** Baritone horn, pitched in B * Valved bugles, includ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Horn Loudspeaker
A horn loudspeaker is a loudspeaker or loudspeaker element which uses an acoustic horn to increase the overall efficiency of the driving element(s). A common form ''(right)'' consists of a compression driver which produces sound waves with a small metal diaphragm vibrated by an electromagnet, attached to a horn, a flaring duct to conduct the sound waves to the open air. Another type is a woofer driver mounted in a loudspeaker enclosure which is divided by internal partitions to form a zigzag flaring duct which functions as a horn; this type is called a ''folded horn'' speaker. The horn serves to improve the coupling efficiency between the speaker driver and the air. The horn can be thought of as an "acoustic transformer" that provides impedance matching between the relatively dense diaphragm material and the less-dense air. The result is greater acoustic output power from a given driver. The narrow part of the horn next to the driver is called the "throat" and the large part far ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Horn (anatomy)
A horn is a permanent pointed projection on the head of various animals that consists of a covering of keratin and other proteins surrounding a core of live bone. Horns are distinct from antlers, which are not permanent. In mammals, true horns are found mainly among the ruminant artiodactyls, in the families Antilocapridae ( pronghorn) and Bovidae ( cattle, goats, antelope etc.). Cattle horns arise from subcutaneous connective tissue (under the scalp) and later fuse to the underlying frontal bone. One pair of horns is usual; however, two or more pairs occur in a few wild species and in some domesticated breeds of sheep. Polycerate (multi-horned) sheep breeds include the Hebridean, Icelandic, Jacob, Manx Loaghtan, and the Navajo-Churro. Horns usually have a curved or spiral shape, often with ridges or fluting. In many species, only males have horns. Horns start to grow soon after birth and continue to grow throughout the life of the animal (except in pronghorns, whic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vehicle Horn
A horn is a sound-making device that can be equipped to motor vehicles, buses, bicycles, trains, trams (otherwise known as streetcars in North America), and other types of vehicles. The sound made usually resembles a "honk" (older vehicles) or a "beep" (modern vehicles). The driver uses the horn to warn others of the vehicle's approach or presence, or to call attention to some hazard. Motor vehicles, ships and trains are required by law in some countries to have horns. Like trams, trolley cars and streetcars, bicycles are also legally required to have an audible warning device in many areas, but not universally, and not always a horn. Types Bicycle Bicycles sometimes have a classic ''bulb horn'', operated by squeezing a rubber bulb attached to a metal horn. Squeezing the bulb forces air through a steel reed located in the throat of the horn, making it vibrate, producing a single note. The flaring horn matches the acoustic impedance of the reed to the open air, radiating the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Horn (acoustic)
An acoustic horn or waveguide is a tapered sound guide designed to provide an acoustic impedance match between a sound source and free air. This has the effect of maximizing the efficiency with which sound waves from the particular source are transferred to the air. Conversely, a horn can be used at the receiving end to optimize the transfer of sound from the air to a receiver. Acoustic horns are found in nature in the form of the burrows constructed by male mole crickets to amplify their song. The earliest appearance of the horn in connection to sound in The Times was published in 1786: Applications Acoustic horns are used in: * horn loudspeakers * brass and woodwind musical instruments * vehicle horns such as those used on cars, trucks, trains, boats, and bicycles * megaphones, often used by lifeguards at public swimming pools. * foghorns, used to warn ships * ear horns, used by people who are hard of hearing (the human ear itself having the form of a horn) * picku ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cape Horn
Cape Horn ( es, Cabo de Hornos, ) is the southernmost headland of the Tierra del Fuego archipelago of southern Chile, and is located on the small Hornos Island. Although not the most southerly point of South America (which are the Diego Ramírez Islands), Cape Horn marks the northern boundary of the Drake Passage and marks where the Atlantic and Pacific Oceans meet. Cape Horn was identified by mariners and first rounded in 1616 by the Dutchman Willem Schouten and Jacob Le Maire, who named it after the city of Hoorn in the Netherlands. For decades, Cape Horn was a major milestone on the clipper route, by which sailing ships carried trade around the world. The waters around Cape Horn are particularly hazardous, owing to strong winds, large waves, strong currents and icebergs. The need for boats and ships to round Cape Horn was greatly reduced by the opening of the Panama Canal in August 1914. Sailing around Cape Horn is still widely regarded as one of the major challe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Keratin
Keratin () is one of a family of structural fibrous proteins also known as ''scleroproteins''. Alpha-keratin (α-keratin) is a type of keratin found in vertebrates. It is the key structural material making up scales, hair, nails, feathers, horns, claws, hooves, and the outer layer of skin among vertebrates. Keratin also protects epithelial cells from damage or stress. Keratin is extremely insoluble in water and organic solvents. Keratin monomers assemble into bundles to form intermediate filaments, which are tough and form strong unmineralized epidermal appendages found in reptiles, birds, amphibians, and mammals. Excessive keratinization participate in fortification of certain tissues such as in horns of cattle and rhinos, and armadillos' osteoderm. The only other biological matter known to approximate the toughness of keratinized tissue is chitin. Keratin comes in two types, the primitive, softer forms found in all vertebrates and harder, derived forms found only ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Horn Of Africa
The Horn of Africa (HoA), also known as the Somali Peninsula, is a large peninsula and geopolitical region in East Africa.Robert Stock, ''Africa South of the Sahara, Second Edition: A Geographical Interpretation'', (The Guilford Press; 2004), p. 26 Located on the easternmost part of the African mainland, it is the fourth largest peninsula in the world. It is composed of Ethiopia, Eritrea, Somalia and Djibouti; broader definitions also include parts or all of Kenya, Sudan, South Sudan, and Uganda. The term Greater Horn Region (GHR) can additionally include Burundi, Rwanda, and Tanzania. It lies along the southern boundary of the Red Sea and extends hundreds of kilometres into the Guardafui Channel, Gulf of Aden, and Indian Ocean and shares a maritime border with the Arabian Peninsula of Western Asia. Names This peninsula has been known by various names. Ancient Greeks and Romans referred to it as Regio Aromatica or Regio Cinnamonifora due to the aromatic plants or as Regio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Telephone
A telephone is a telecommunications device that permits two or more users to conduct a conversation when they are too far apart to be easily heard directly. A telephone converts sound, typically and most efficiently the human voice, into electronic signals that are transmitted via cables and other communication channels to another telephone which reproduces the sound to the receiving user. The term is derived from el, τῆλε (''tēle'', ''far'') and φωνή (''phōnē'', ''voice''), together meaning ''distant voice''. A common short form of the term is ''phone'', which came into use early in the telephone's history. In 1876, Alexander Graham Bell was the first to be granted a United States patent for a device that produced clearly intelligible replication of the human voice at a second device. This instrument was further developed by many others, and became rapidly indispensable in business, government, and in households. The essential elements of a telephone are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Train Horn
In rail transport, a train (from Old French , from Latin , "to pull, to draw") is a series of connected vehicles that run along a railway track and transport people or freight. Trains are typically pulled or pushed by locomotives (often known simply as "engines"), though some are self-propelled, such as multiple units. Passengers and cargo are carried in railroad cars, also known as wagons. Trains are designed to a certain gauge, or distance between rails. Most trains operate on steel tracks with steel wheels, the low friction of which makes them more efficient than other forms of transport. Trains have their roots in wagonways, which used railway tracks and were powered by horses or pulled by cables. Following the invention of the steam locomotive in the United Kingdom in 1804, trains rapidly spread around the world, allowing freight and passengers to move over land faster and cheaper than ever possible before. Rapid transit and trams were first built in the late 1800s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Horn Island, Queensland
Horn Island, or ''Ngurupai/Narupai'' (pronounced ''Nœrupai/Nurupai'') in the local language, is an island of the Torres Strait Islands archipelago located in the Torres Strait, in Queensland in Northern Australia between the Australian mainland and Papua New Guinea. It is within the locality of Horn within the Shire of Torres. The town of Wasaga is on the north-western coast of the island (). In the , the locality of Horn had a population of 531 people. Geography The island is in area. Horn Island is the site of Horn Island Airport, which also serves Thursday Island. Therefore, it is a gateway for travellers to the mainland and outer islands. The present-day population consists of islanders drawn from all islands of the Torres Strait, as well as non-islanders. Residents travel daily by ferry across the Ellis Channel to Thursday Island for work and school. Shire of Torres is the local government authority, providing the island community's municipal services. History Horn Isl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Horn (Mount Buffalo)
The Horn is the most prominent peak on the Mount Buffalo plateau in Victoria, Australia. The Horn has an elevation of AHD. Found on the west side of the Victorian Alps (part of the Australian Alps and the Great Dividing Range), the top of the mountain has granite boulders and rock formations. A walking track leads to the top of The Horn. History Aboriginal people made summer ascents to Mount Buffalo to gather and feast on the protein-rich Bogong Moth that cluster in rock crevices, and also to meet and hold ceremonies. The Mount Buffalo plateau was named in 1824 by the explorers, Hume and Hovell, because of its supposed resemblance to a buffalo. See also *Alpine National Park The Alpine National Park is a national park located in the Central Highlands (Victoria), Central Highlands and Victorian Alps, Alpine regions of Victoria (Australia), Victoria, Australia. The national park is located northeast of Melbourne, Aust ... * List of mountains in Victoria External ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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