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Pressure Gauge
Pressure Gauge Background Many of the processes in the modern world involve the measurement and control of pressurized liquid and gas systems. This monitoring reflects certain performance criteria that must be controlled to produce the desirable results of the process and... Read more |
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strength of materials
strength of materials measurement in engineering of the capacity of metal, wood, concrete, and other materials to withstand stress and strain. Stress is the internal force exerted by one part of an elastic body upon the adjoining part, and strain is the deformation or change in dimension occasioned... Read more |
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elasticity
elasticity the ability of a body to resist a distorting influence or stress and to return to its original size and shape when the stress is removed. All solids are elastic for small enough deformations or strains, but if the stress exceeds a certain amount known as the elastic limit, a permanent... Read more |
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Paleoseismology
palaeoseismology Palaeoseismology is the study of prehistoric earthquakes using geological and geomorphological evidence. ‘Prehistoric’, in this context, is commonly taken to mean the past 500 000 years in contrast to the usual elastic use of this term. Palaeoseismology is of... Read more |
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Elastin
elastin A fibrous protein that is the major constituent of the yellow elastic fibres of connective tissue. It is rich in glycine, alanine, proline, and other nonpolar amino acids that are cross-linked, making the protein relatively insoluble. Elastic fibres can stretch to several times their length... Read more |
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Pseudoxanthoma Elasticum
Pseudoxanthoma Elasticum Definition Pseudoxanthoma elascticum (PXE) is an inherited connective tissue disorder in which the elastic fibers present in the skin, eyes, and cardiovascular system gradually become calcified and inelastic. Description PXE was first reported in 1881 by Rigal, but the... Read more |
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collodion
collodion , solution of pyroxylin in a mixture of alcohol and ether. Upon exposure to air, the solvents evaporate, leaving a thin, colorless, elastic film on any surface upon which the collodion has been spread. Collodion is the forerunner of the lacquer paints that are now widely used in the... Read more |
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rubber
rubber any solid substance that upon vulcanization becomes elastic; the term includes natural rubber ( caoutchouc ) and synthetic rubber. The term elastomer is sometimes used to designate synthetic rubber only and is sometimes extended to include caoutchouc as well. Chemistry and Properties... Read more |
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Youngs modulus
Young's modulus [for Thomas Young ], number representing (in pounds per square inch or dynes per square centimeter) the ratio of stress to strain for a wire or bar of a given substance. According to Hooke's law the strain is proportional to stress, and therefore the ratio of the two is a constant... Read more |
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Challenger
Challenger U.S. space shuttle. It exploded (Jan. 28, 1986) 73 seconds into its tenth flight, killing all seven crew members, including the first civilian in space, schoolteacher Christa McAuliffe. The disaster was caused by the faulty design of a gasket (the O-ring seal). As dramatically... Read more |
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