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Elasticity - Wikipedia, the free encyclopedia Elasticity (economics), a general term for a ratio of change. Elasticity (mathematics), a mathematical definition of point elasticity. Elasticity (physics), continuum mechanics of bodies which deform reversibly under stress. en.wikipedia.org /wiki/Elasticity   (92 words)

Elasticity (physics) - Wikipedia, the free encyclopedia Elasticity is a branch of physics which studies the properties of elastic materials. The constant of proportionality (sometimes known as the elasticity), is given by the reciprocal of Young's modulus of elasticity, which is a measure of stiffness. Thus, elasticity is typically modeled using a linear relationship between stresses and strain (see "Linear elasticity"). en.wikipedia.org /wiki/Elasticity_(physics)   (329 words)

AllRefer.com - elasticity (Physics) - Encyclopedia   (Site not responding. Last check: 2007-10-18) 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 deformation is produced. For each kind of stress and the corresponding strain there is a modulus, i.e., the ratio of the stress to the strain; the ratio of tensile stress to strain for a given material is called its Young's modulus. reference.allrefer.com /encyclopedia/E/elastici.html   (232 words)

Stas Sinogeikin: Research interests   (Site not responding. Last check: 2007-10-18) The elasticity of mantle minerals is of primary importance because it provides the information which can be directly compared to seismic models and used to infer the composition and proportions of different mineral phases in the Earthâs interior, as well as thermal structure of the Earhtâs mantle. Pressure dependence of the elasticity of mantle minerals is the most significant parameter for the extrapolation of the elastic properties of minerals to the PT conditions of the Earthâs mantle. These measurements reveal appreciable differences in the temperature dependence of the elasticity of different minerals, indicating that the interpretation of the tomographic models should be performed with a caution and with a reference to the mineral phases which are present in a particular region of the mantle. www.geology.uiuc.edu /~sinogeik/ResearchStatement.htm   (1616 words)

The engineer placed in charge of the design and construction of the $100 billion terrorist project funded by Doctor ... Applied Elasticity which involves concepts and mathematical theory of Elasticity focuses on the nature of approaches and their applications in engineering and points out the mode of thinking in analyzing problems as well as the proper way to solve them. Applied Elasticity expands coverage of Mechanics of Materials theory; three dimensional stress and strain transformations, strain energy in structural members, analysis of thin and thick walled cylinders, application of strain energy methods to beams may be successfully applied to realistic problems. In contrast, the elasticity method does not relay on a prescribed deformation mode and bases its analysis on the general equations to be satisfied by the body in equilibrium under any external force system. www.eng.usf.edu /~kaw/class/elasticity/elasticityessay.htm   (5889 words)

Tensile Stress-Strain Properties in Materials (Experiment) Measure and mark a distance of 5cm or 10cm in the middle of each piece of material (5cm for high elasticity and 10cm for low elasticity). Measure the thickness and width of the material between the marks (thickness for very thin materials may be determined by measuring multiple layers of the material and dividing). If enough data are collected on one or more of the materials used, a statistical analysis could be done to determine the reliability, precision, and accuracy of the data and the experiment. www.juliantrubin.com /encyclopedia/physics/tensile.html   (821 words)

Elasticity - physics Elasticity - the ability of a solid to recover its shape when the deforming forces are removed. The deformation of an elastic material obeys Hooke's law, which states that deformation is proportional to the applied stress up to a certain point. The elasticity is a consequence of forces acting between atoms and molecules in any material. www.staff.amu.edu.pl /~romangoc/M10-elasticity.html   (163 words)

Nanotechnology - Wikipedia, the free encyclopedia Nanotechnology is a subclassification of technology in colloidal science, biology, physics, chemistry and other scientific fields and involves the study of phenomena and manipulation of material at the nanoscale, in essence an extension of existing sciences into the nanoscale. However, due to the inter- and multidisciplinary nature of nanotechnology, subdisciplines such as physical chemistry, materials science, or biomedical engineering are considered significant or essential components of nanotechnology. The physics and engineering performance of exemplar designs were analyzed in the textbook Nanosystems. en.wikipedia.org /wiki/Nanotechnology   (3719 words)

Rigid Body Collisions - Physics Simulation If elasticity is less than 1, and gravity is greater than zero, then the objects eventually settle onto the floor. Physically Based Modeling is a set of course notes from Siggraph '97 by Andrew Witkin and David Baraff. Physics For Game Developers by David M. Bourg (O'Reilly Press) has a section on linear and angular impulse on page 95, and resting contact forces on page 258. www.myphysicslab.com /collision.html   (2989 words)

CSU Dominguez Hills - Physics Department Physics is the study of the fundamental laws of nature upon which all of the natural and applied sciences are based. We offer a BS in physics with a concentration in physics or physical science (for future high school teachers) and are currently pursuing the establishment of an MS in Physics program. We study a variety of topics from the curvature of the universe and grand unification of the fundamental forces in nature, to space plasmas, exploding stars, stellar fusion, particle astrophysics and cosmic rays, and new techniques for diagnostic imaging, modeling the strength and elasticity of bones and arteries, and radiation therapy. www.nbs.csudh.edu /physics/index.html   (264 words)

Stress (physics) - Search Results - MSN Encarta Stress (physics), force per unit cross-sectional area applied to an object. The ratio of stress to strain, called the elastic modulus, and the elastic limit of a material are determined by the molecular structure of the... Physics, major science dealing with the fundamental constituents of the universe, the forces they exert on one another, and the effects of these... uk.encarta.msn.com /Stress_(physics).html   (109 words)

:: POLYTECHNIC UNIVERSITY :: Department of Physics A qualified senior physics student or several such students work with a faculty member (and perhaps graduate students as well) on an advanced problem in interdisciplinary physics. Concluding phase of the project; senior physics students or several such students work with a faculty member (and perhaps graduate students as well) to solve an advanced problem in interdisciplinary physics. Senior physics students, in consultation with the instructor, study and prepare presentations, several current research topics in the general area of interdisciplinary physics. www.poly.edu /physics/undergraduate/courses/index.php   (594 words)

Elasticity in physics Mechanical physics describes macroscopic features of the universe, how forces such as friction and gravity can morphologically alter the structure of physical items. Elasticity refers to a property wherein a body can be distorted to some degree and still retain some salient characteristic, however that characteristic is defined, and be able to return it to its original state. With the loss of elasticity, there is a global change in a structural state (so the concept of a global state variable would apply) that changes the nature of the material. www.cecm.sfu.ca /~thalie/PhD/node47.html   (319 words)

Physics Today November 2001 New calculations of iron's elasticity at the temperatures and pressures of Earth's inner core show that the directional dependence of sound waves in the crystals is larger than expected. That's why a new state-of-the-art calculation of iron's elasticity, which starts from first principles and incorporates the effects of high temperatures, is receiving considerable attention. That's the structure that was assumed for the recent calculations of the elastic properties. www.physicstoday.org /vol-54/iss-11/p17.html   (1779 words)

Biomedical Engineering The fundamental goal of elasticity imaging is to develop surrogate, remote palpation, thus expanding palpation's limited range to include deep lying lesions. Elasticity imaging was primarily developed for two imaging platforms - ultrasound and MRI, since the signal phase can be exploited to sensitively track internal tissue motion while applicability of other imaging systems such as mammography and computed tomography for elasticity imaging was also demonstrated. Several potential applications of elasticity imaging were identified, such as early detection of renal transplant rejection, differentiation of vulnerable plaques in coronary artery, prostate carcinoma detection, breast cancer imaging, etc. www.bme.utexas.edu /faculty/stas.cfm   (734 words)

Elasticity -- from Eric Weisstein's World of Physics Landau, L. and Lifschitz, E. Theory of Elasticity, 3rd rev. enl. Muskhelishvili, N. Some Basic Problems of the Mathematical Theory of Elasticity: Fundamental Equations, Plane Theory of Elasticity, Torsion, and Bending, 4th corr. Todhunter, I. A History of the Theory of Elasticity and of the Strength of Materials, from Galilei to Lord Kelvin, 2 vols. scienceworld.wolfram.com /physics/Elasticity.html   (429 words)

Elasticity (physics) - Search Results - MSN Encarta Elasticity (physics), property of a material that causes it to resume its original size and shape after having been compressed or stretched by an... The science of ultrasonics has many applications in various fields of physics, chemistry, technology, and medicine. In the science of optics, Young discovered the phenomenon of interference, which helped to establish the wave nature of light. uk.encarta.msn.com /Elasticity_(physics).html   (101 words)

Comments on the Culture of the Force - Physics Today August 2005 I: Culture Shock" (PHYSICS TODAY, October 2004, page 11) appears to be that although the force is, in Wilczek's words, "vaguely defined," it "continues to flourish" because the microscopic details it conceals are not really relevant for the scale of the phenomena it serves to describe. He commented that "many of the problems of molecular structure are concerned essentially with forces," that "forces are almost as easy to calculate as energies are," and that "the quantities are quite as easy to interpret." Another application of the concept of force is found in nonequilibrium statistical mechanics. Good physics teachers need to demonstrate critical thinking, distribute their own notes, and have the courage not to brainlessly repeat what is written in the book. www.physicstoday.org /vol-58/iss-8/p15.html   (1111 words)

DNA elasticity By the time this picture was firmly in place, in the 1930's, it would have seemed as foolish to treat molecules by classical physics as to apply quantum theory to the motions of the planets. It is now a simple mathematical calculation to see how the entropic elasticity effect depends on the unknown bend-persistence length of the chain, compare it to experimental data (see illustration), and find the persistence length. The elastic resistance to stretching a rod is related to the bend stiffness by a formula from classical elasticity theory; DNA obeys this formula remarkably well. dept.physics.upenn.edu /~pcn/mcgraw2/mcglatex.html   (1411 words)

Physics (PHYS)   (Site not responding. Last check: 2007-10-18) May not be taken for credit by a student who has successfully completed a higher numbered course in Physics. The course stresses fundamental physics concepts with demonstration experiments and activities. Topics include: relativity, radioactivity, nuclear structure, basic quantum mechanics, atomic structure and solid state physics with applications to lasers and semiconductors, and elementary particles. www.utm.edu /admin/catalog01/physics.htm   (485 words)

Physics (PHYS)   (Site not responding. Last check: 2007-10-18) 150 Concepts and Demonstrations in Physics (4) A first course in physics for students with no previous background in physics and not requiring a higher level of physics in their curriculum. Topics include mechanics, elasticity, oscillatory motion, wave motion, sound, fluids and thermodynamics.Three hours of lecture and two hours of laboratory. Physical optics: wave theory, absorption, transmission, dispersion, interference, diffraction, and polarization. www.utm.edu /admin/catalog99/physics.htm   (502 words)

Physics, Department of Natural Sciences, Baruch College Topics in twentieth-century physics include electronics, wave properties and particle properties of light, photons and the photoelectric effect, the nucleus and Bohr's treatment of the hydrogen atom, the wave nature of matter, X-rays, radioactivity, nuclear structure, and nuclear transformations. This course is a quantitative study of the principles and techniques of physics. This course is a calculus-based study of quantitative physics. www.baruch.cuny.edu /wsas/departments/natural_science/physics/index.html   (488 words)

Classes A one quarter (4 unit) course focused on physical reasoning as applied to the understanding of biological phenomena at the molecular and cellular level. Examine physical constraints that sculpt the aqueous, sub-micron world Learn how macromolecules function as machines at the interface between physical and chemical forces. Armed with these fundamentals, we will venture once again into the realm of modern physics and probe deeper into nature of the materials that support your everyday phenomena with a survey of atomic and solid state physics. www.physics.ucsb.edu /~deborah/cla/index.htm   (551 words)

Search ScienceWorld Quantum mechanics is the description of motion and interaction of particles at the small scales where the discrete nature of the physical world becomes important. Quantum mechanics represented a fundamental break with classical physics, in which energies and angular momenta were regarded as continuous qu The fundamental principle of general relativity asserts that accelerated reference frames and reference frames in gravitation fields are equivalent. scienceworld.wolfram.com /search/index.cgi?num=&q=Pergamon   (415 words)

Physics Today September 2000 One realizes quite soon that the ponderous title hides, in fact, an incredibly detailed introduction to the physics of lipid membranes, which are probably one of the better-known examples of the lyotropic state of matter. The Helfrich­Canham­Evans hamiltonian serves as the point of departure that leads to nonlinear elasticity, elasticity of lipid mono- and bilayers, microscopic nature of the elastic moduli, computer modelling of membrane elasticity, and experimental determination of the relevant elastic moduli. The theory of membrane elasticity can also be straightforwardly applied to the problem of defects in the layered structure and, most notably, to the problem of the membrane pore formation. www.aip.org /pt/vol-53/iss-9/p67.html   (836 words)

Johns Hopkins University Press | Books | The Physics of Hockey Touching on topics such as solid-state physics, statistical physics elasticity, probability, thermodynamics, and mechanics, Haché uses science to enhance our appreciation and understanding of the game. A thought-provoking, fun, and gentle introduction to some basic issues in physics, The Physics of Hockey is a truly unique book worthy of the shelf of every hockey fan and physics enthusiast. Physical concepts are covered at a level that the average first year physics student would readily grasp. www.press.jhu.edu /books/title_pages/2780.html   (530 words)

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