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Topic: Coulomb


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In the News (Sun 23 Sep 18)

  
  Coulomb Force Gizmo | ExploreLearning
Place fixed charges on a two‑dimensional grid before firing a moving charge (velocity can be adjusted).
The velocity of the charge will be acted on and altered by the Coulomb forces.
We're sorry, but JavaScript is required to access ExploreLearning's Gizmos.
www.explorelearning.com /index.cfm?method=cResource.dspView&ResourceID=16   (187 words)

  
  Coulomb   (Site not responding. Last check: 2007-11-02)
Coulomb addressed the Academy of Science (Paris, 1773) presenting a modest "essay on the application of the rules of maxima and minima to certain statics problems relavant to architecture." This "essay," printed three years later by the Academy, is the earliest published soil mechanics theory; it started the active and passive pressure concepts.
Coulomb spent 9 years as a military engineer in the West Indies but, according to Ref. 2, "his health suffered so, when the French Revolution began, he retired to the country to do scientific research." It seems to me that his retirement was not really voluntary (see the story in our dark side page).
Coulomb worked on applied mechanics but he is best known to physicists for his work on electricity and magnetism.
www.ejge.com /People/Coulomb/Coulomb.htm   (347 words)

  
  Coulomb's law Summary   (Site not responding. Last check: 2007-11-02)
Coulomb's law states that the magnitude of the force that one charged particle exerts on a second charged particle is proportional to the magnitude of the charges and inversely proportional to the square of the distance between them.
Coulomb's law, in combination with principles of quantum physics, helps to describe the forces that bind electrons to the nucleus in atoms, that bind atoms together to form molecules, and that hold the molecules in liquids and solids together.
Coulomb's law can also be interpreted in terms of atomic units with the force expressed in Hartrees per Bohr radius, the charge in terms of the elementary charge, and the distances in terms of the Bohr radius.
www.bookrags.com /Coulomb's_law   (1263 words)

  
 Charles-Augustin de Coulomb Summary   (Site not responding. Last check: 2007-11-02)
Coulomb is today best known for his measurements of the forces of magnetic and electric attraction and for his formulation of the law now known as Coulomb's law.
In the remaining memoirs Coulomb showed that charge leakage is proportional to charge, and that static charge is distributed on conductor surfaces (not their interiors); and he produced a fully-developed magnetic theory.
Coulomb is distinguished in the history of mechanics and of electricity and magnetism.
www.bookrags.com /Charles-Augustin_de_Coulomb   (2498 words)

  
 Coulomb's Law. Electrical Principles and History   (Site not responding. Last check: 2007-11-02)
Coulomb used little spheres with different charges whose exact value he did not know, but the experiment allowed him to test the relation between the charges.
Coulomb realized that if a charged sphere touches another identical not charged sphere, the charge will be shared in equal parts symmetrically.
When he varied the distance between the charges, he found the force decreased in relation to the square of the distance; that is, if the distance was duplicated, the force decreased to the fourth part of the original value.
www.jfinternational.com /ph/coulomb-law.html   (501 words)

  
 Coulomb biography
Coulomb's mother remained in Paris but Coulomb had a disagreement with her over the direction his career should take so he left Paris and went to Montpellier to live with his father.
Coulomb wanted to enter the École du Génie at Mézières but realised that to succeed in passing the entrance examinations he needed to be tutored.
It is to Borda and to Coulomb that one owes the renaissance of true physics in France, not a verbose and hypothetical physics, but that ingenious and exact physics which observes and compares all with rigour.
www-history.mcs.st-andrews.ac.uk /Biographies/Coulomb.html   (2059 words)

  
 Coulomb - MSN Encarta
Charles Augustin de Coulomb (1736-1806), French physicist, pioneer in electrical theory, born in Angoulême. He served as a military engineer for France in the West Indies, but retired to Blois, France, at the time of the French Revolution to continue research in magnetism, friction, and electricity.
With this invention, Coulomb was able to formulate the principle, now known as Coulomb's law, governing the interaction between electric charges.
After the war Coulomb came out of retirement and assisted the new government in devising a metric system of weights and measures.
encarta.msn.com /encyclopedia_761558788/Coulomb.html   (182 words)

  
 Coulomb's Constant - Electrostatic Constant   (Site not responding. Last check: 2007-11-02)
Coulomb's constant can be conveniently represented as the result of four discrete components.
But in the Aether it is known that the units of inductance and capacitance are actually involved in permeability and permittivity, respectively.
One practical use of the Aether conductance constant is in the equation for particle strong charge (electromagnetic charge).
www.16pi2.com /coulombs_constant.htm   (376 words)

  
 Coulomb
Figure 1 illustrates a torsion balance like Coulomb used to determine the relationship of the distance between charged objects and the force of their interaction.
Coulomb measured the interaction between electrostatically charged pith balls.
As the balls suspended from the thin fiber rotate toward the one attached to a glass rod, Coulomb was able to measure the torsion on the fiber with the scale near the top of the device and the distance between the balls on the scale that circumscribed the jar.
www.usm.maine.edu /~newton/Chy251_253/Lectures/CoulombsLaw/Coulomb.html   (746 words)

  
 Coulomb's constant   (Site not responding. Last check: 2007-11-02)
Coulomb's inverse-square law was discovered by Henry Cavendish prior to Coulomb, but the result went unpublished until after his death.
Coulomb's work was published in several issues of the Mémoirs de l'Académie Royale between 1775 and 1779.
Coulomb's constant occurs in Gauss's law, where the electric field integrated over a closed surface (the normal component, to give the flux out of the region bounded by the surface) is related to the charge Q enclosed inside the surface.
www.planck.com /coulombconstant.htm   (309 words)

  
 Physicists - Coulomb   (Site not responding. Last check: 2007-11-02)
Charles Augustin de Coulomb was born in a rich family in Angouleme, a city in the Southern France, in 1736.
Coulomb invented a torsion balance in 1777, which was later called Coulomb balance.
Coulomb's series of publications enriched the computational methods in electricity and magnetism, and extended Newtonian principles of mechanics to the context of electricity and magnetism.
www.hk-phy.org /history/eng/coulomb_e.html   (353 words)

  
 Charles Coulomb
Charles Augustin Coulomb was born in 14 June 1736 of Henry Coulomb and Catherine Bajet.
Coulomb graduated in November 1761 from Ecole du Génie at Mézières.
In 1779 Coulomb was sent to Rochefort to collaborate with the Marquis de Montalembert in constructing a fort made entirely from wood near Ile d'Aix.
www.corrosion-doctors.org /Biographies/CoulombBio.htm   (389 words)

  
 Coulomb - Search Results - MSN Encarta
Coulomb, derived SI unit of quantity of electric charge, symbol C. It is named after the French physicist Charles Augustin de Coulomb.
Coulomb, Charles Augustin de (1736-1806), French physicist, pioneer in electrical theory, born in Angoulême. He served as a military engineer for...
The elementary concepts of magnetism, based on the existence of pairs of oppositely charged poles, date from the 17th century.
uk.encarta.msn.com /Coulomb.html   (114 words)

  
 Coulomb - Search Results - ninemsn Encarta
Coulomb, derived SI unit of quantity of electric charge, symbol C. It is named after the French physicist Charles Augustin de Coulomb.
Coulomb, Charles Augustin de (1736-1806), French physicist, pioneer in electrical theory, born in Angoulême. He served as a military engineer for...
The elementary concepts of magnetism, based on the existence of pairs of oppositely charged poles, date from the 17th century.
au.encarta.msn.com /Coulomb.html   (106 words)

  
 Coulomb's Law
Coulomb's law states that the electrical force between two charged objects is directly proportional to the product of the quantity of charge on the objects and inversely proportional to the square of the separation distance between the two objects.
In physics courses, Coulomb's law is often used as a type of algebraic recipe to solve physics word problems.
Coulomb's law equation for electrical force bears a strong resemblance to Newton's equation for universal gravitation.
www.glenbrook.k12.il.us /gbssci/phys/Class/estatics/u8l3b.html   (2222 words)

  
 Welcome to Coulomb
Coulomb Ltd will not accept responsibility for any charges made by your operator in connection with your use of these services.
Employees of Coulomb Ltd, and their associated, affiliated and subsidiary companies and their families, agents and any person connected with the Competition are not eligible to win prizes.
Coulomb Ltd and their associated and affiliated companies, shall not be liable for entries (or changes to those entries) that are invalid, incomplete, indecipherable, lost or delayed for any reason.
www.coulomb.co.uk /worldcallssms.html   (773 words)

  
 coulomb
Earlier definitions of the coulomb parallel that adopted by the CGPM in 1948.
The international coulomb (1893 – 1948), a unit in the International System of Electrical and Magnetic Units, was the amount of charge transported through any section of a electric circuit in one second, when the current in the circuit is one international ampere.
In the practical system of electrical units, a coulomb was one tenth of an abcoulomb.
www.sizes.com /units/coulomb.htm   (183 words)

  
 Coulomb's law
Between 1785 and 1787, the French physicist Charles Augustine de Coulomb performed a series of experiments involving electric charges, and eventually established what is nowadays known as Coulomb's law.
Coulomb's law and Newton's law are both inverse-square force laws: i.e.
Coulomb's law and Newton's law are both examples of what are usually referred to as action at a distance theories.
farside.ph.utexas.edu /teaching/em/lectures/node28.html   (1591 words)

  
 Coulomb Excitation
The importance and usefulness of Coulomb excitation was realized very early in nuclear studies.
During the bombardment, a strong, varying electromagnetic field acts, and the nucleus is forced into an excited state because of the electromagnetic interaction between the nuclear charge and the field.
Coulomb excitation will be introduced in a qualitative approach throughout the present chapter and its basic principles will be mentioned.
www.physics.rutgers.edu /~tmertzi/Thesis/node7.html   (278 words)

  
 Coulomb Barrier for Nuclear Fusion
The fusion temperature obtained by setting the average thermal energy equal to the coulomb barrier gives too high a temperature because fusion can be initiated by those particles which are out on the high-energy tail of the Maxwellian distribution of particle energies.
The presumed height of the coulomb barrier is based upon the distance at which the nuclear strong force could overcome the coulomb repulsion.
The temperatures required to overcome the coulomb barrier for fusion to occur are so high as to require extraordinary means for their achievement.
hyperphysics.phy-astr.gsu.edu /hbase/nucene/coubar.html   (380 words)

  
 Charles Augustin Coulomb- Coulomb's Law
Coulomb is perhaps most famous for the law of physics bearing his name.
Coulomb's law (Equation 1) describes the relationship between force, charge and distance.
Coulomb's torsion balance worked by charging two pith balls, one of which was fixed and one of which was
ffden-2.phys.uaf.edu /212_fall2003.web.dir/don_bahls/coulombs_law.html   (343 words)

  
 coulomb concept from the Astronomy knowledge base   (Site not responding. Last check: 2007-11-02)
From 1908 to 1948 the international coulomb, derived from the international ampere, was in use.
The name coulomb was given to the unit at the first meeting of the IEC in Paris in 1881.
These were the ampere (A. Ampère 1775-1836) and the coulomb (C. Coulomb 1736-1806).
www.csi.uottawa.ca:4321 /astronomy/coulomb.html   (159 words)

  
 Coulomb's Law - The law of force   (Site not responding. Last check: 2007-11-02)
On the other hand, a coulomb is an incredibly large unit of charge.
It is actually too large a unit of charge for talking about electrostatics (stationary charges) but it is an appropriately sized unit as we begin describing the quantity of charge moved in an electric circuit.
You should notice that the formula for Coulomb's law is very similar to Newton's Universal Law of Gravitation.
www.regentsprep.org /Regents/physics/phys03/acoulomb/default.htm   (362 words)

  
 Electric forces
Coulomb's law is a vector equation and includes the fact that the force acts along the line joining the charges.
Coulomb's law describes a force of infinite range which obeys the inverse square law, and is of the same form as the gravity force.
If two one-second collections of 1 Coulomb each were concentrated at points one meter apart, the force between them could be calculated from Coulomb's Law.
hyperphysics.phy-astr.gsu.edu /hbase/electric/elefor.html   (714 words)

  
 20th WCP: Philosophy of Contents: Form and Coulomb's Law
Thus, the philosophic-logical solution to Coulomb's law on the basis of contents-form philosophy radically changes our conventional concepts about the microworld, the consequences of which will be considered in greater detail.
The purpose of this article is to demonstrate how disregarding the philosophical approach at solving physics problems, on the basis of a concrete example of dimensionality establishment, leads to serious consequences, and to what extent.
From viewpoint of general principles of philosophy and logic, Coulomb's law as an elementary law of physics has to be presented by the multiplicative expression composed of the constant and variable components.
www.bu.edu /wcp/Papers/Scie/ScieShpe.htm   (2817 words)

  
 COULOMB: 3D Electric Field Simulation Software
COULOM is an easy-to-use 3D electric field solver used for applications like high voltage shielding, cables, transformers, insulators and bushings, transmission lines, lightning arresters and printed circuit boards.
COULOMB reduces design time and costs while improving product performance by letting you take risks with simulation, not prototyping or manufacturing.
COULOMB is also easy-to-learn, so you can focus on product development, not software training.
www.integratedsoft.com /products/coulomb   (281 words)

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