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Siphon (other) , a series of enclosed milk churn transport wagons built by the Great Western ...
A siphon is a tube in an inverted U shape which enables a liquid, under the pull of gravity, to flow upwards and then downwards to discharge at a lower level. Siphon may also refer to: * Soda siphon, device used for dispensing carbonated water * Siphon (insect anatomy) * Siphon (mollusc), an organ of many aquatic molluscs through which water (or air) flows * Oral siphon of Urochordata * Siphon (horse), a racehorse * Carotid siphon, a portion of the human internal carotid artery running through the cavernous sinus * Siphon (cave), a passage in a cave that is submerged under water * Anti-siphoning law, a term in television broadcasting * GWR Siphon The GWR Siphon was a series of enclosed milk churn transport wagons built by the Great Western Railway and continued by British Railways. Background The GWR, being a railway system which served the rural and highly agricultural West of England a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Siphon
A siphon (from grc, σίφων, síphōn, "pipe, tube", also spelled nonetymologically syphon) is any of a wide variety of devices that involve the flow of liquids through tubes. In a narrower sense, the word refers particularly to a tube in an inverted "U" shape, which causes a liquid to flow upward, above the surface of a reservoir, with no pump, but powered by the fall of the liquid as it flows down the tube under the pull of gravity, then discharging at a level lower than the surface of the reservoir from which it came. There are two leading theories about how siphons cause liquid to flow uphill, against gravity, without being pumped, and powered only by gravity. The traditional theory for centuries was that gravity pulling the liquid down on the exit side of the siphon resulted in reduced pressure at the top of the siphon. Then atmospheric pressure was able to push the liquid from the upper reservoir, up into the reduced pressure at the top of the siphon, like in a baromet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Soda Siphon
The soda siphon (sometimes spelled syphon), also known as the seltzer bottle or siphon seltzer bottle, is a device for storing and dispensing carbonated beverages (typically carbonated water) while maintaining the internal pressure, thereby preventing it from going flat. History As early as 1790, the concept of an "aerosol" was introduced in France, with self-pressurized carbonated beverages. The modern siphon was created in 1829, when two Frenchmen patented a hollow corkscrew which could be inserted into a soda bottle and, by use of a valve, allowed a portion of the contents to be dispensed while maintaining the pressure on the inside of the bottle and preventing the remaining soda from going flat. Soda siphons were popular in the 1920s and 1930s. The rise of bottled carbonated beverages and the destruction of many of the siphon manufacturers' plants in Eastern Europe during World War II led to a decline in their popularity in the years after the war. These bottles are still ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Siphon (insect Anatomy)
A siphon is a tubular organ of the respiratory system of some insects that spend a significant amount of their time underwater, that serves as a breathing tube. The larvae of several kinds of insects, including mosquitoes, tabanid flies, and Belostomatidae) live in the water and breathe through a siphon. Some adult insects which spend considerable time underwater have an abdominal breathing tube. For example adult water scorpions have the caudal process which consists of a pair of half-tubes capable of being locked together to form a siphon by means of which air is conducted to the tracheae at the apex of the abdomen The abdomen (colloquially called the belly, tummy, midriff, tucky or stomach) is the part of the body between the thorax (chest) and pelvis, in humans and in other vertebrates. The abdomen is the front part of the abdominal segment of the torso. ... when the tip of the tube is thrust above the surface of the water. In immature forms the siphon is undeveloped ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Siphon (mollusc)
A siphon is an anatomical structure which is part of the body of aquatic molluscs in three classes: Gastropoda, Bivalvia and Cephalopoda (members of these classes include saltwater and freshwater snails, clams, octopus, squid and relatives). Siphons in molluscs are tube-like structures in which water (or, more rarely, air) flows. The water flow is used for one or more purposes such as locomotion, feeding, respiration, and reproduction. The siphon is part of the mantle of the mollusc, and the water flow is directed to (or from) the mantle cavity. A single siphon occurs in some gastropods. In those bivalves which have siphons, the siphons are paired. In cephalopods, there is a single siphon or funnel which is known as a hyponome. In gastropods In some (but not all) sea snails, marine gastropod molluscs, the animal has an anterior extension of the mantle called a siphon, or inhalant siphon, through which water is drawn into the mantle cavity and over the gill for respiration ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Urochordata
A tunicate is a marine invertebrate animal, a member of the subphylum Tunicata (). It is part of the Chordata, a phylum which includes all animals with dorsal nerve cords and notochords (including vertebrates). The subphylum was at one time called Urochordata, and the term urochordates is still sometimes used for these animals. They are the only chordates that have lost their myomeric segmentation, with the possible exception of the 'seriation of the gill slits'. Some tunicates live as solitary individuals, but others replicate by budding and become colonies, each unit being known as a zooid. They are marine filter feeders with a water-filled, sac-like body structure and two tubular openings, known as siphons, through which they draw in and expel water. During their respiration and feeding, they take in water through the incurrent (or inhalant) siphon and expel the filtered water through the excurrent (or exhalant) siphon. Most adult tunicates are sessile, immobile and per ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Siphon (horse)
Siphon (foaled November 11, 1991) is a Brazilian-bred Thoroughbred racehorse and multiple G1-winner in Brazil and the United States. Background Siphon was bred by and foaled in 1991. He was sired by the champion Itajara, who is considered by many to be the best Brazilian racehorse of all time. Siphon's dam is Ebrea, from the family of one of the founding mares of Haras São José e Expedictus. Race career Siphon's racing career began in Brazil, where he ran in and won four of four races at Cidade Jardim. He was exported to Argentina in November, 1994, running unplaced in the Gran Premio Nacional and Gran Premio Carlos Pellegrini. Siphon was then exported to the United States, where he was trained by Richard Mandella and won the Hollywood Gold Cup Stakes and Santa Anita Handicap The Santa Anita Handicap is an American Thoroughbred horse race held annually in early March at Santa Anita Park in Arcadia, California. It is a Grade I race for horses four years old and up a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carotid Siphon
The internal carotid artery (Latin: arteria carotis interna) is an artery in the neck which supplies the anterior circulation of the brain. In human anatomy, the internal and external carotids arise from the common carotid arteries, where these bifurcate at cervical vertebrae C3 or C4. The internal carotid artery supplies the brain, including the eyes, while the external carotid nourishes other portions of the head, such as the face, scalp, skull, and meninges. Classification Terminologia Anatomica in 1998 subdivided the artery into four parts: "cervical", "petrous", "cavernous", and "cerebral". However, in clinical settings, the classification system of the internal carotid artery usually follows the 1996 recommendations by Bouthillier, describing seven anatomical segments of the internal carotid artery, each with a corresponding alphanumeric identifier—C1 cervical, C2 petrous, C3 lacerum, C4 cavernous, C5 clinoid, C6 ophthalmic, and C7 communicating. The Bouthillier nomencl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Internal Carotid Artery
The internal carotid artery (Latin: arteria carotis interna) is an artery in the neck which supplies the anterior circulation of the brain. In human anatomy, the internal and external carotids arise from the common carotid arteries, where these bifurcate at cervical vertebrae C3 or C4. The internal carotid artery supplies the brain, including the eyes, while the external carotid nourishes other portions of the head, such as the face, scalp, skull, and meninges. Classification Terminologia Anatomica in 1998 subdivided the artery into four parts: "cervical", "petrous", "cavernous", and "cerebral". However, in clinical settings, the classification system of the internal carotid artery usually follows the 1996 recommendations by Bouthillier, describing seven anatomical segments of the internal carotid artery, each with a corresponding alphanumeric identifier—C1 cervical, C2 petrous, C3 lacerum, C4 cavernous, C5 clinoid, C6 ophthalmic, and C7 communicating. The Bouthillier nomenclat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Siphon (cave)
A sump, or siphon, is a passage in a cave that is submerged under water. A sump may be static, with no inward or outward flow, or active, with continuous through-flow. Static sumps may also be connected underwater to active stream passage. When short in length, a sump may be called a duck, however this can also refer to a section or passage with some (minimal) airspace above the water. Depending on hydrological factors specific to a cave – such as the sea tide, changes in river flow, or the relationship with the local water table – sumps and ducks may fluctuate in water level and depth (and sometimes in length, due to the shape of adjacent passage). Exploration past a sump Diving Short sumps may be passed simply by holding one's breath while ducking through the submerged section (for example, Sump 1 in Swildon's Hole). This is known as "free diving" and can only be attempted if the sump is known to be short and not technically difficult (e.g. constricted or requiring na ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anti-siphoning Law
Anti-siphoning laws and regulations are designed to prevent pay television broadcasters from buying monopoly rights to televise important and culturally significant events before free-to-air television has a chance to bid on them. The theory is that if such a monopoly was allowed, then those unable or unwilling to obtain access to the pay television service would be unable to view the important and culturally significant events. Generally the laws allow pay-TV to bid for such monopoly rights only if free-to-air television has declined to bid on them. Notable examples of such policies are present in Australia and the United Kingdom. Anti-siphoning in the United States was introduced by the FCC in 1975 and was soon overturned as unconstitutional. Some sports leagues do contractually obligate that their broadcasters include a certain number of telecasts on over-the-air television as part of their overall contracts. For games broadcast exclusively by pay television channels, the Nation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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