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Topic: Electromagnetic force

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In the News (Mon 17 Jun 19)

  Fundamental Forces
One of the four fundamental forces, the electromagnetic force manifests itself through the forces between charges (Coulomb's Law) and the magnetic force, both of which are summarized in the Lorentz force law.
The electromagnetic force is a force of infinite range which obeys the inverse square law, and is of the same form as the gravity force.
The discovery of the W and Z particles in 1983 was hailed as a confirmation of the theories which connect the weak force to the electromagnetic force in electroweak unification.
hyperphysics.phy-astr.gsu.edu /hbase/forces/funfor.html   (1168 words)

 Electromagnetic force - Wikipedia, the free encyclopedia
In physics, the electromagnetic force is the force that the electromagnetic field exerts on electrically charged particles.
The electromagnetic force is one of the four fundamental forces.
The electromagnetic force is the one responsible for practically all the phenomena one encounters in daily life, with the exception of gravity.
en.wikipedia.org /wiki/Electromagnetic_force   (301 words)

 fundamental force concept from the Astronomy knowledge base   (Site not responding. Last check: 2007-09-19)
One of the four fundamental forces of nature, it is carried by photons and is responsible for all observed macroscopic forces, except for gravity., One of the four fundamental forces of nature.
The other three fundamental forces are the gravitational force, the weak nuclear force, and the strong nuclear force., One of the four fundamental forces of nature, governing the electric and magnetic interaction between particles., The phenomena associated with electrical and magnetic forces.
strong force (11 facts) (nuclear force) - Strongest of the four fundamental forces, responsible for keeping quarks locked inside protons and neutrons and for keeping protons and neutrons crammed inside of atomic nuclei., The short-range nuclear force which is assumed to be responsible for binding the nucleus together.
www.site.uottawa.ca:4321 /astronomy/fundamentalforce.html   (839 words)

 Wikinfo | Electromagnetism
The forces between atoms, including the attractive forces between atoms in a solid that give rise to the rigidity of solids, are predominently electromagnetic, arising from the positive electric charge of the protons in atomic nuclei and the negative electric charge of the electrons surrounding the nuclei.
The theory of classical electromagnetism was developed by various physicists over the course of the 19th century, culminating in the work of James Clerk Maxwell, who unified the preceding developments into a single theory and discovered the electromagnetic nature of light.
The force that the electromagnetic field exerts on electrically charged particles is described using the Lorentz force law.
wikinfo.org /wiki.php?title=Electromagnetism   (372 words)

 Force   (Site not responding. Last check: 2007-09-19)
Our present understanding is that there are four fundamental forces in the universe, the gravity force, the nuclear weak force, the electromagnetic force, and the nuclear strong force in ascending order of strength.
In mechanics, forces are seen as the causes of linear motion, whereas the causes of rotational motion are called torques.
Newton's Third Law states that all forces in nature occur in pairs of forces which are equal in magnitude and opposite in direction.
hyperphysics.phy-astr.gsu.edu /hbase/force.html   (239 words)

 Electromagnetic Forces
An indication of the dominance of the magnetic force is given by a ball bearing on a table.
When plasmas, say streams of charged particles, interact electromagnetically, their force law varies inversely as the distance between them, 1/2 the pull if they are 2 arbitrary measurement units apart, 1/3 the pull for a distance of 3 units apart, 1/4 the pull for 4 units apart, and so on.
So at 4 arbitrary distance units apart, the electromagnetic force is 4 times greater than that of gravitation, relatively speaking, and at 100 units, apart, the electromagnetic force is 100 times that of gravitation.
public.lanl.gov /alp/plasma/EM_forces.html   (764 words)

 The Four Fundamental Forces
The strong force is by far the strongest of the forces, followed by the electromagnetic force, the weak force, and finally the extremely feeble gravitational force.
The electromagnetic force is actually second in effective strength only to the strong force, but it is listed out of order here because it, like gravity, is more familiar to most people.
The messenger particle of electromagnetism is the photon, a massless particle that logically (since light is a manifestation of electromagnetism) travels at the speed of light (299 792 458 m/s or 299 972 km/s).
library.advanced.org /27930/forces.htm   (1049 words)

 Four Forces- Ranges and Carriers
The four forces of nature are considered to be the gravitational force, the electromagnetic force, which has residual effects, the weak nuclear force, and the strong nuclear force, which also has residual effects.
The electromagnetic force is the second strongest force, behind the strong force by two orders of magnitude at the distances in a nucleus, but can be either attractive or repulsive.
In reality, the strong force is so strong that all color-charged gluons and quarks are bound tightly together into color neutral hadrons, either the mesons which consist of a quark and antiquark with corresponding color and anticolor, or the baryons, which consist of three quarks of the three colors, which cancel to color-neutrality.
www.phy.duke.edu /~kolena/modern/forces.html   (1191 words)

 Altair Explains Electromagnetics
This electromagnetic force is what gives material objects the illusion of solidity even though they are composed of 99.999% empty space.
The latent force of electromagnetism may be mathematically described by a field of vectors, hence the term force field.
Electromagnetic radiation has a dual nature, this duality means sometimes we see the wave-nature and sometimes we see the particle-nature.
www.altair.org /emag.html   (916 words)

 Electromagnetic Force
From a physicist's point of view maybe the patchwork is the atomic elements and the golden thread is the electromagnetic force that knits the atomic elements into molecules.
The electromagnetic force is repulsive between protons and protons and electrons and electrons but attractive between protons and electrons.
It transmits the strong force between the protons and neutrons of the atomic nuclei.
www.pythabacus.com /CCgame/Electro.htm   (650 words)

 Enzymes: electromagnetic force, and periodic tables of elements and quarks
Significance is manifest for it is the electromagnetic force creating the morphe of atoms made of shells filled with subatomic particles as the figure shows.
The electromagnetic force acts with the Circe effect even in "substrate" atoms as it radically transforms the path and behavior of both the nucleons and electrons that this Circe effect captures.
Not only does the biological enzyme exist via the activity of the electromagnetic force, the electromagnetic force extends its behavior after having grown atoms and takes on the additional agenda of forming living creatures and then, in ions in the nervous system, assumes the role of enabling thought and communication.
www.mightymall.com /1st3seconds/enzpyrmd.html   (977 words)

 The Fundamental Forces & Light
When body A exerts a force on body B, body B exerts an equal and opposite force on body A. Often stated as the Law of Action and Reaction, the Third Law is responsible for Conservation of Momentum and is the Principle that makes Rocket Flight possible.
The forces which prevent you from falling through the floor or your chair, the forces that are exerted when you push an object, (friction, etc.) are all examples of the electromagnetic force in action.
We now know that the Weak Force is an aspect of a "unified force" called the "Electro-Weak Force" which combines the properties of the Weak Force and the Electromagnetic Force.
cassfos02.ucsd.edu /public/tutorial/Forces.html   (1377 words)

 force — FactMonster.com
Although the weakest of the four forces is the gravitational force, it is the most easily observed because it affects all matter, is always attractive and because its range is theoretically infinite, i.e., the force decreases with distance but remains measurable at the largest separations.
The electromagnetic force, which can be observed between electric charges, is stronger than the gravitational force and also has infinite range.
intermolecular forces - intermolecular forces, forces that are exerted by molecules on each other and that, in general,...
www.factmonster.com /ce6/sci/A0819139.html   (528 words)

 Force   (Site not responding. Last check: 2007-09-19)
Commonly experienced as a "push" or "pull," force is a vector quantity, having both magnitude and direction.
The study of forces in equilibrium is statics; that of forces and motion is dynamics.
The gravitational force and the electromagnetic force have an infinite range.
www.neutron.anl.gov /hyper-physics/force.html   (169 words)

 Electromagnetic force generator - Patent 5587615
A force generator as set forth in claim 6 wherein said first and second cores are constructed of a material exhibiting a relatively low reluctance and said permanent magnet comprises a material exhibiting a relatively high reluctance where relatively little of the a.c.
As indicated previously, it is an advantage of the force generator of the present invention that the mass associated with the output element is relatively small as compared with the inertial mass.
The net force produced by this force generator is the difference between the force at the upper pair of gaps minus the force at the lower pair of gaps.
www.freepatentsonline.com /5587615.html   (2882 words)

 Alaska Science Performance Standard L4/A5
The strength of the force is proportional to the charges, and, as with gravitation, inversely proportional to the square of the distance between them.
The energy of electromagnetic waves is carried in packets whose magnitude is inversely proportional to the wavelength.
Electromagnetic forces acting within and between atoms are vastly stronger than the gravitational forces acting between the atoms.
www.ankn.uaf.edu /Publications/Translating/L4A5.html   (739 words)

 carrier boson concept from the Astronomy knowledge base   (Site not responding. Last check: 2007-09-19)
For example, the carrier boson for the electromagnetic force is the photon.
It is a stable particle with zero rest mass, zero charge, and a spin of ± 2, and travels with the speed of light., Smallest bundle of the gravitational force field; messenger particle for the gravitational force., The hypothetical quantum particle of the gravitational field.
It could also be thought of as a quantized element of space-time curvature., A quantum of gravitational radiation., The quanta thought to convey gravitational force; analogous to the photons, gluons, and intermediate vector bosons of electromagnetism and the strong and weak nuclear forces.
www.site.uottawa.ca:4321 /astronomy/carrierboson.html   (526 words)

 The Four Fundamental Forces of Nature
The electromagnetic force controls the behavior of charged particles and plasmas (a plasma is a mixture of equal numbers of positive ions and negative electrons) as, for example, in solar prominences, coronal loops, flares, and other kinds of solar activity.
The strong nuclear force interaction is the underlying source of the vast quantities of energy that are liberated by the nuclear reactions that power the stars.
However, because the nuclear forces have such microscopically short ranges, and matter on the large scale tends to be electrically neutral, gravitation is the force that governs the motion of massive bodies such as planets, stars and galaxies.
www.geocities.com /angolano/Astronomy/FundamentalForces.html   (1255 words)

Electromagnetic waves are transverse waves, similar to water waves in the ocean or the waves seen on a guitar string.
The velocity of electromagnetic waves in a vacuum is approximately 186,000 miles per second or 300,000 kilometers per second, the same as the speed of light.
Electromagnetic waves are transverse waves, as opposed to sound waves which are compression waves..
www.sgha.net /electros.html   (3007 words)

 Henry Wallace: Kinemassic Force Field
It is the average density of all the zones that determines the magnitude of the anti-parallel field force vector in its opposition to the ambient gravitational field force vector.
The absence of precessional forces permits a close tolerance to be established between the cooperating faces of the wheel structure 21, the pole pieces 23 and the mass circuit 44.
However, establishing the necessary criteria for such a force field effects a polarization of the spin components of adjacent nuclei in a preferred direction thereby resulting in a force field which may be represented in terms of kinemassic field flux lines to the direction of spin.
www.rexresearch.com /wallace/wallace.htm   (16321 words)

 The Fundamental Forces of Nature
The four fundamental forces all play central roles in making the Universe what it is today, but with respect to the large-scale issues that are of interest to cosmology it is gravitation that is most important.
Only when the temperature dropped did these forces separate from each other, with the strong force separating first and then at a still lower temperature the electromagnetic and weak forces separating to leave us with the 4 distinct forces that we see in our present Universe.
Theories that postulate the unification of the strong, weak, and electromagnetic forces are called Grand Unified Theories (often known by the acronym GUTs).
csep10.phys.utk.edu /astr162/lect/cosmology/forces.html   (630 words)

A large part of chemistry, physiology, and molecular biology are regulated by electromagnetic forces.
The source of the electromagnetic force is electric charge- a fundamental property of matter.
The electomagnetic force between the proton and the electron in the hydrogen atom is 10
casswww.ucsd.edu /physics/ph7/html/e.html   (420 words)

The force that keeps you from falling through the floor is the electromagnetic force which causes the atoms making up the matter in your feet and the floor to resist being displaced.
So the electromagnetic force is what allows atoms to bond and form molecules, allowing the world to stay together and create the matter you interact with all of the time.
For this reason, the strong force only takes place on the really small level of quark interactions, which is why you are not aware of the strong force in your everyday life.
www.crystallotus.com /Atom/04a.htm   (434 words)

 Electromagnetism - Wikipedia, the free encyclopedia
Electromagnetism is the force observed as static electricity, and causes the flow of electric charge (electric current) in electrical conductors.
The magnetic field causes the magnetic force associated with magnets.
The term "electromagnetism" comes from the fact that electrical and magnetic forces are involved simultaneously.
en.wikipedia.org /wiki/Electromagnetism   (1136 words)

 Fifth Dimension – 5D – Unified Force ~ Physics
According to modern science these four forces are as followed: gravitation, electromagnetic force, and the strong and weak nuclear forces.
The Electromagnetic force is the force in which binds negative electrons into their orbital shells approximately around the positive nucleus of an atom.
The Weak Nuclear force is the cause of the radioactive decay of certain particular atomic nuclei.
dewarlorx.com /5d.htm   (1303 words)

 Forces within the Atom
Forces, such as gravity and magnetism, pull falling objects (pine cones and leaves) towards the earth and push the like poles of magnets apart.
Electrons are kept in the orbit around the nucleus by the electromagnetic force, because the nucleus in the center of the atom is positively charged and attracts the negatively charged electrons.
There are four forces (Electromagnetic, Strong, Weak, and Gravity) that are responsible for the behavior of the particles and thus keep the atom together.
www.ric.edu /ptiskus/Atomic_Force/index.htm   (396 words)

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