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Hydraulic Press
A hydraulic press is a machine press using a hydraulic cylinder to generate a compressive force. It uses the hydraulic equivalent of a mechanical lever, and was also known as a Bramah press after the inventor, Joseph Bramah, of England. He invented and was issued a patent on this press in 1795. As Bramah (who is also known for his development of the flush toilet) installed toilets, he studied the existing literature on the motion of fluids and put this knowledge into the development of the press. Main principle The hydraulic press depends on Pascal's principle-the pressure throughout a closed system is constant. One part of the system is a piston acting as a pump, with a modest mechanical force acting on a small cross-sectional area; the other part is a piston with a larger area which generates a correspondingly large mechanical force. Only small-diameter tubing (which more easily resists pressure) is needed if the pump is separated from the press cylinder. Pascal's law: Pressu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydraulic Force, Language Neutral
Hydraulics (from Greek: Υδραυλική) is a technology and applied science using engineering, chemistry, and other sciences involving the mechanical properties and use of liquids. At a very basic level, hydraulics is the liquid counterpart of pneumatics, which concerns gases. Fluid mechanics provides the theoretical foundation for hydraulics, which focuses on the applied engineering using the properties of fluids. In its fluid power applications, hydraulics is used for the generation, control, and transmission of power by the use of pressurized liquids. Hydraulic topics range through some parts of science and most of engineering modules, and cover concepts such as pipe flow, dam design, fluidics and fluid control circuitry. The principles of hydraulics are in use naturally in the human body within the vascular system and erectile tissue. Free surface hydraulics is the branch of hydraulics dealing with free surface flow, such as occurring in rivers, canals, lakes, estuar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Volcanism
Volcanism, vulcanism or volcanicity is the phenomenon of eruption of molten rock (magma) onto the surface of the Earth or a solid-surface planet or moon, where lava, pyroclastics, and volcanic gases erupt through a break in the surface called a vent. It includes all phenomena resulting from and causing magma within the crust or mantle of the body, to rise through the crust and form volcanic rocks on the surface. Magmas, that reach the surface and solidify, form extrusive landforms. Volcanic processes Magma from the mantle or lower crust rises through the crust towards the surface. If magma reaches the surface, its behavior depends on the viscosity of the molten constituent rock. Viscous (thick) magma produces volcanoes characterised by explosive eruptions, while non-viscous (runny) magma produce volcanoes characterised by effusive eruptions pouring large amounts of lava onto the surface. In some cases, rising magma can cool and solidify without reaching the surface. Inste ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Universal Testing Machine
A universal testing machine (UTM), also known as a universal tester, materials testing machine or materials test frame, is used to test the tensile strength and compressive strength of materials. An earlier name for a tensile testing machine is a tensometer. The "universal" part of the name reflects that it can perform many standard tensile and compression tests on materials, components, and structures (in other words, that it is versatile). Components Several variations are in use. Common components include: * Load frame - Usually consisting of two strong supports for the machine. Some small machines have a single support. * Load cell - A force transducer or other means of measuring the load is required. Periodic calibration is usually required by governing regulations or quality system. * Cross head - A movable cross head (crosshead) is controlled to move up or down. Usually this is at a constant speed: sometimes called a ''constant rate of extension'' (CRE) machine. So ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Adventure Of The Engineer's Thumb
"The Adventure of the Engineer's Thumb", one of the 56 short Sherlock Holmes stories written by Sir Arthur Conan Doyle, is the ninth of the twelve stories collected in ''The Adventures of Sherlock Holmes''. The story was first published in ''The Strand Magazine'' in March 1892. Within the narrative of the story, Dr. Watson notes that this is one of only two cases which he personally brought to the attention of Sherlock Holmes. Synopsis The story, set in the summer of 1889, mainly consists of a young London consultant hydraulic engineer, Mr. Victor Hatherley, recounting strange happenings of the night before, first to Dr. Watson. Hatherley had been visited in his office by a man who identified himself as Colonel Lysander Stark. He offered Hatherley a commission at a country house, in Eyford, Berkshire to examine a hydraulic press used, as Stark explains, to compress fuller's earth into bricks. Stark warned Hatherley to keep the job confidential, offering him 50 guineas (£, ). H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sherlock Holmes
Sherlock Holmes () is a fictional detective created by British author Arthur Conan Doyle. Referring to himself as a " consulting detective" in the stories, Holmes is known for his proficiency with observation, deduction, forensic science and logical reasoning that borders on the fantastic, which he employs when investigating cases for a wide variety of clients, including Scotland Yard. First appearing in print in 1887's ''A Study in Scarlet'', the character's popularity became widespread with the first series of short stories in ''The Strand Magazine'', beginning with " A Scandal in Bohemia" in 1891; additional tales appeared from then until 1927, eventually totalling four novels and 56 short stories. All but one are set in the Victorian or Edwardian eras, between about 1880 and 1914. Most are narrated by the character of Holmes's friend and biographer Dr. John H. Watson, who usually accompanies Holmes during his investigations and often shares quarters with him at the ad ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Finland
Finland ( fi, Suomi ; sv, Finland ), officially the Republic of Finland (; ), is a Nordic country in Northern Europe. It shares land borders with Sweden to the northwest, Norway to the north, and Russia to the east, with the Gulf of Bothnia to the west and the Gulf of Finland across Estonia to the south. Finland covers an area of with a population of 5.6 million. Helsinki is the capital and largest city, forming a larger metropolitan area with the neighbouring cities of Espoo, Kauniainen, and Vantaa. The vast majority of the population are ethnic Finns. Finnish, alongside Swedish, are the official languages. Swedish is the native language of 5.2% of the population. Finland's climate varies from humid continental in the south to the boreal in the north. The land cover is primarily a boreal forest biome, with more than 180,000 recorded lakes. Finland was first inhabited around 9000 BC after the Last Glacial Period. The Stone Age introduced several differ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tampere
Tampere ( , , ; sv, Tammerfors, ) is a city in the Pirkanmaa region, located in the western part of Finland. Tampere is the most populous inland city in the Nordic countries. It has a population of 244,029; the urban area has a population of 341,696; and the metropolitan area, also known as the Tampere sub-region, has a population of 393,941 in an area of . Tampere is the second-largest urban area and third most-populous individual municipality in Finland, after the cities of Helsinki and Espoo, and the most populous Finnish city outside the Greater Helsinki area. Today, Tampere is one of the major urban, economic, and cultural hubs in the whole inland region. Tampere and its environs belong to the historical province of Satakunta. The area belonged to the Häme Province from 1831 to 1997, and over time it has often been considered to belong to Tavastia as a province. For example, in '' Uusi tietosanakirja'' published in the 1960s, the Tampere sub-region is presented as p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
YouTube
YouTube is a global online video platform, online video sharing and social media, social media platform headquartered in San Bruno, California. It was launched on February 14, 2005, by Steve Chen, Chad Hurley, and Jawed Karim. It is owned by Google, and is the List of most visited websites, second most visited website, after Google Search. YouTube has more than 2.5 billion monthly users who collectively watch more than one billion hours of videos each day. , videos were being uploaded at a rate of more than 500 hours of content per minute. In October 2006, YouTube was bought by Google for $1.65 billion. Google's ownership of YouTube expanded the site's business model, expanding from generating revenue from advertisements alone, to offering paid content such as movies and exclusive content produced by YouTube. It also offers YouTube Premium, a paid subscription option for watching content without ads. YouTube also approved creators to participate in Google's Google AdSens ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydraulic Press Channel
The Hydraulic Press Channel (HPC) is a YouTube channel operated by Finnish workshop owner Lauri Vuohensilta. Launched in October 2015, the channel publishes videos of various objects being crushed in a 140-ton hydraulic press. On 31 October 2015, the channel published a video of Vuohensilta unsuccessfully attempting to fold a piece of paper more than seven times with the hydraulic press. The video was subsequently posted to the social news website Reddit in March 2016, causing it to receive more than two million views within a day. The channel's unexpected success caused Vuohensilta to continue producing videos for the Hydraulic Press Channel. In June 2016, the channel became eligible for both the silver and the gold YouTube Play Buttons, leading to his attempt to crush the silver one with the press. Analysis of the channel's success often cites the excitement of the unexpected results, Vuohensilta's sense of humor, and his distinctive Finnish accent. Overview Each video beg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Robot
A robot is a machine—especially one programmable by a computer—capable of carrying out a complex series of actions automatically. A robot can be guided by an external control device, or the control may be embedded within. Robots may be constructed to evoke human form, but most robots are task-performing machines, designed with an emphasis on stark functionality, rather than expressive aesthetics. Robots can be autonomous or semi-autonomous and range from humanoids such as Honda's ''Advanced Step in Innovative Mobility'' ( ASIMO) and TOSY's ''TOSY Ping Pong Playing Robot'' (TOPIO) to industrial robots, medical operating robots, patient assist robots, dog therapy robots, collectively programmed ''swarm'' robots, UAV drones such as General Atomics MQ-1 Predator, and even microscopic nano robots. By mimicking a lifelike appearance or automating movements, a robot may convey a sense of intelligence or thought of its own. Autonomous things are expected to proliferate in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boris Artzybasheff
Boris Mikhailovich Artzybasheff (russian: , 25 May 1899, Kharkiv, Russian Empire – 16 July 1965) was a Ukrainian illustrator active in the United States, notable for his strongly worked and often surreal designs. Life and career Artzybasheff was born in Kharkiv, son of the author Mikhail Artsybashev. He is said to have fought as a White Russian. During 1919 he arrived in New York City, where he worked in an engraving shop. His earliest work appeared in 1922 as illustrations for ''Verotchka's Tales'' and ''The Undertaker's Garland''. A number of other book illustrations followed during the 1920s. Dhan Gopal Mukerji's ''Gay Neck, the Story of a Pigeon'', with his illustrations, was awarded the Newbery Medal in 1928. His book '' Seven Simeons'' was a Caldecott Honor Book in 1938. Over the course of his career, he illustrated some 50 books, several of which he wrote, most notably ''As I See''. During his lifetime, however, Artzybasheff was probably known best for his magazine ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fermat's Room
''Fermat's Room'' ( es, La habitación de Fermat) is a 2007 Spanish thriller film directed by Luis Piedrahita and Rodrigo Sopeña. Three mathematicians and one inventor are invited to a house under the premise of solving a great enigma, and told to use pseudonyms based on famous historical mathematicians. At the house, they are trapped in a room. They must solve puzzles given by the host, who calls himself "Fermat", in order to escape the slowly closing walls of the room. Plot A stranger using the alias "Fermat" invites several people to attend a convention of the country's best mathematicians. To accept the invitation, each must solve a math puzzle. Upon receipt of the correct solution, each receives as an alias the name of a famous mathematician or philosopher; they are forbidden to reveal their true identities. Each is instructed to arrive at a specific place and time, alone and without a cell phone, to work on "the greatest enigma". At the appointed time, four individuals ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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