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Topic: Mechanics


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In the News (Tue 23 Apr 19)

  
  Builder & design software to create your web page & websites
TM and Copyright © 1998 - 2007 Virtual Mechanics Inc. All rights reserved.
Virtual Mechanics' tools make it easy for you to build your own attractive, functional website quickly, without having to know HTML.
You can be assured that your website can be hosted on any server and is compliant with all the major browsers and search engines.
www.virtualmechanics.com   (189 words)

  
  mechanics. The Columbia Encyclopedia, Sixth Edition. 2001-05
Mechanics was studied by a number of ancient Greek scientists, most notably Aristotle, whose ideas dominated the subject until the late Middle Ages, and Archimedes, who made several contributions and whose approach was quite modern compared to other ancient scientists.
In 1905, Albert Einstein showed that Newton’s mechanics was an approximation, valid for cases involving speeds much less than the speed of light; for very great speeds the relativistic mechanics of his theory of relativity was required.
In the quantum mechanics developed during the 1920s as part of the quantum theory, the motions of very tiny particles, such as the electrons in an atom, were explained using the fact that both matter and energy have a dual nature—sometimes behaving like particles and other times behaving like waves.
www.bartleby.com /65/me/mechanics.html   (694 words)

  
  Quantum mechanics - Wikipedia, the free encyclopedia
Quantum mechanics is a more fundamental theory than Newtonian mechanics and classical electromagnetism, in the sense that it provides accurate and precise descriptions for many phenomena that these "classical" theories simply cannot explain on the atomic and subatomic level.
In the formalism of quantum mechanics, the state of a system at a given time is described by a complex number wave functions (sometimes referred to as orbitals in the case of atomic electrons), and more generally, elements of a complex vector space.
An alternative formulation of quantum mechanics is Feynman's path integral formulation, in which a quantum-mechanical amplitude is considered as a sum over histories between initial and final states; this is the quantum-mechanical counterpart of action principles in classical mechanics.
en.wikipedia.org /wiki/Quantum_Mechanics   (5557 words)

  
 Mechanics
Mechanics is the branch of physics concerned with the motion of physical bodies, the forces that cause or limit these motions, and the forces to which bodies may, in turn, give rise.
Quantum mechanics is, formally at least, of the widest scope, and can be seen as encompassing classical mechanics, as a sub-discipline which applies under certain restricted circumstances.
In fact, in quantum mechanics, particles themselves are fields, as described theoretically by the wave function.
www.brainyencyclopedia.com /encyclopedia/m/me/mechanics.html   (846 words)

  
 Mechanics Summary
The subdivisions of mechanics include kinematics, which studies the movement of objects without explicit consideration of the forces responsible for the motion, and dynamics, which is concerned with the motion of moving objects and the forces and physical properties that affect them (e.g., mass, momentum, and energy).
Mechanics is also concerned with thermodynamics quantities such as work (the application of force in the direction of the displacement of a body), energy (the capacity to perform work), and power (the rate at which work is performed).
Mechanics is the branch of physics concerned with the motion of physical bodies, the forces that cause or limit these motions, and the forces to which bodies may, in turn, give rise.
www.bookrags.com /Mechanics   (2379 words)

  
 Molecular Mechanics
The "mechanical" molecular model was developed out of a need to describe molecular structures and properties in as practical a manner as possible.
The mechanical molecular model considers atoms as spheres and bonds as springs.
The object of molecular mechanics is to predict the energy associated with a given conformation of a molecule.
cmm.info.nih.gov /modeling/guide_documents/molecular_mechanics_document.html   (1070 words)

  
 Diesel Mechanics
Mechanics who work for organizations that maintain their own vehicles may spend much time doing preventive maintenance to assure safe operation, prevent wear and damage to parts, and reduce costly breakdowns.
Mechanics may be certified as Master Heavy- Duty Truck Technician or may be certified in one or more of six different areas of heavy-duty truck repair: brakes, gasoline engines, diesel engines, drive trains, electrical systems, and suspension and steering.
Employment of diesel mechanics is expected to increase about as fast as the average for all occupations through the year 2005.
www.umsl.edu /services/govdocs/ooh9697/183.htm   (2055 words)

  
 Aircraft and avionics equipment mechanics and service technicians
Mechanics also may repair sheet metal or composite surfaces; measure the tension of control cables; and check for corrosion, distortion, and cracks in the fuselage, wings, and tail.
Most mechanics who work on civilian aircraft are certified by the FAA as an “airframe mechanic” or a “powerplant mechanic.” Mechanics who also have an inspector’s authorization can certify work completed by other mechanics and perform required inspections.
Mechanics learn many different skills in their training that can be applied to other jobs, and some transfer to other skilled repairer occupations or electronics technician jobs.
www.bls.gov /oco/ocos179.htm   (2729 words)

  
 Bohmian Mechanics (Stanford Encyclopedia of Philosophy)
Bohmian mechanics, which is also called the de Broglie-Bohm theory, the pilot-wave model, and the causal interpretation of quantum mechanics, is a version of quantum theory discovered by Louis de Broglie in 1927 and rediscovered by David Bohm in 1952.
Bohmian mechanics is of course as much a counterexample to the Kochen-Specker argument for the impossibility of hidden variables as it is to the one of von Neumann.
Bohmian mechanics is manifestly nonlocal: The velocity, as expressed in the guiding equation, of any one of the particles of a many-particle system will typically depend upon the positions of the other, possibly distant, particles whenever the wave function of the system is entangled, i.e., not a product of single-particle wave functions.
plato.stanford.edu /entries/qm-bohm   (11611 words)

  
 Farm Equipment Mechanics
Most farm equipment mechanics work in well ventilated, lighted, and heated repair shops, but older shops may not offer these amenities; others may work in the farmer’s equipment shed or barn where conditions may not be as ideal as in the mechanic’s repair shop.
Farm equipment mechanics may keep abreast of changes in farm equipment technology by going to trade shows, by reading the latest farm equipment literature, and by carefully studying service manuals and analyzing complex diagrams.
Employers of farm equipment mechanics report difficulty finding qualified candidates to fill available positions because people trained to repair farm equipment have the fundamental skills and knowledge to work as mechanics in industries outside agriculture.
www.umsl.edu /services/govdocs/ooh20002001/81.htm   (1984 words)

  
 Career: Aircraft Mechanics   (Site not responding. Last check: )
Mechanics who specialize in repair rely on pilots' descriptions to find and fix faulty equipment.
Mechanics may assemble, adjust, and install new systems, such as electronics or plumbing.
Mechanics may work on one or many types of aircraft.
www.iseek.org /sv/13000.jsp?id=100232   (475 words)

  
 Quantum Mechanics (Stanford Encyclopedia of Philosophy)
In standard texts on quantum mechanics, the vector is represented by a function known as the wave-function, or ψ-function.
From a mathematical point of view, what really distinguishes quantum mechanics from its classical predecessors is that states and quantities have a richer structure; they form families with a more interesting network of relations among their members.
That, in a nutshell, is the Measurement Problem in quantum mechanics; any interpretation of the theory, any detailed story about what the world is like according to quantum mechanics, and in particular those bits of the world in which measurements are going on, has to grapple with it.
plato.stanford.edu /entries/qm   (3823 words)

  
 On Classical Mechanics
It is known that in classical mechanics Newton's dynamics cannot be formulated for all reference frames, since it does not conserve its form when passing from one reference frame to another.
Classical mechanics solves this difficulty by separating reference frames into two classes: inertial reference frames, for which Newton's dynamics applies, and non-inertial reference frames, where Newton's dynamics does not apply; but this solution contradicts the principle of general relativity, which states: the laws of physics shall be valid for all reference frames.
The mechanics of particles considers that the only kind of bodies found in the Universe are particles, and assumes that every particle occupies a point in space.
torassa.tripod.com /paper.htm   (2008 words)

  
 Independent mechanics confronting rising costs   (Site not responding. Last check: )
In a move that may be causing thousands to pay more for car repairs, independent mechanics are getting out of the business, turning away customers and charging more for those they continue to serve -- all because of the high costs of staying up-to-date with newer automotive technology and repair information.
Another result of the mechanics' dilemma is that some of them will turn away cars and trucks for which they don't have the latest tools or repair information.
Some independent mechanics decide not to make any of the necessary investments in the software and tools, and rely on lower repair prices that they offer to attract business.
www.post-gazette.com /pg/06330/741112-185.stm   (905 words)

  
 Fizzics Fizzle: Intermediate: Mechanics   (Site not responding. Last check: )
Mechanics is the study of forces and motion.
Most likely, the principles that describe mechanics are the ones that influence your life everyday.
The next sections begin to describe the forces themselves, and how energy and momentum come into play to affect the motion of objects.
library.thinkquest.org /16600/intermediate/mechanics.shtml   (89 words)

  
 PHYSICS
Introduction to nonrelativistic quantum mechanics: perturbation theory, the variational principle, radiation; application of quantum mechanics to atomic physics, magnetic resonance, scattering, and various special topics.
PHYS 441 Quantum Physics (4) NW Introduction to concepts and methods of quantum physics: wave mechanics (de Broglie wavelength, uncertainty principle, Schrodinger equation), one-dimensional examples (tunneling, harmonic oscillator), formalism of quantum physics, angular momentum and the hydrogen atom.
Statistical mechanical basis of the fundamental thermodynamical laws and concepts; classical and quantum statistical distribution functions; applications to selected thermodynamic processes and examples of Bose and Fermi statistics.
www.washington.edu /students/crscat/phys.html   (3944 words)

  
 Bottom Line: Dishonest Auto Mechanics - Financial
A garage mechanic loosens your spark plug cables, then tells you that your engine is running sluggishly and recommends a tune-up or some other pricey fix.
A mechanic surreptitiously splashes antifreeze on your alternator, causing it to give off smoke when the engine is hot.
When a mechanic tells you that a part must be replaced and the part is easily accessible, put a dot of Wite-Out on it when he isn’t watching, preferably on the side or bottom so it isn’t obvious.
www.wnbc.com /money/9989807/detail.html   (889 words)

  
 Mechanics   (Site not responding. Last check: )
Mechanics is the study of the way matter and forces interact with each other.
Statics is a field within mechanics which concerns itself with forces when no change in momentum occurs.
Dynamics is a field concerned with forces and matter when a change in momentum does occur.
id.mind.net /~zona/mstm/physics/mechanics/mechanics.html   (86 words)

  
 Celestial Mechanics @ LaunchBase.com (Launch Base)   (Site not responding. Last check: )
I'm pretty sure he was speaking English, but he got to opining about small red stars and the Kuiper Belt, clear orbits and celestial mechanics and possibly...
Celestial mechanics is an application of physics, particularly Newtonian mechanics, to astronomical objects such as stars and planets.
The main article for this category is Celestial mechanics.
www.launchbase.com /encyclopedia/Category:Celestial_mechanics   (141 words)

  
 Amazon.com: Course of Theoretical Physics : Mechanics (Course of Theoretical Physics): Books: E M Lifshitz,L D Landau   (Site not responding. Last check: )
ONE of the fundamental concepts of mechanics is that of a particle.
Historically, it was long after the main bulk of mechanics was developed that Emmy Noether proved that symmetries underly every important quantity in physics.
The 2nd laws of mechanics, for example, is derived as a consequence of the uniqueness of trajectories in the Lagragian.
www.amazon.com /Course-Theoretical-Physics-Mechanics/dp/0750628960   (1678 words)

  
 Mechanics page on ProMechanics.com
The lifeblood of ProMechanics are the mechanics themselves.
These are the people who hold the tools, the ones we seek for assistance, the people who keep our equipment in working order.
This area of ProMechanics is set aside to keep you updated on what the mechanics are doing, where to contact them and what opportunities are popping up for the mechanic.
www.promechanics.com /mechanic/index.htm   (70 words)

  
 Open Directory - Science: Physics: Quantum Mechanics   (Site not responding. Last check: )
Intro to Quantum Mechanics - This page is intended to give an ordinary person a brief overview of the importance and wonder of quantum mechanics.
Mona Lisa - ineffable smile of quantum mechanics - The portrait of Mona Lisa is scrutinized with reference to quantum mechanics
Student Understanding of Quantum Mechanics - A set of lectures and reports outlining methods of teaching introductory quantum mechanics to a wide range of students.
dmoz.org /Science/Physics/Quantum_Mechanics   (618 words)

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