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Topic: Electric dipole moment

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	Dipole
		A dipole is a pair of electric charges or magnetic poles of equal magnitude but opposite polarity, separated by some (usually small) distance.
		speaking a dipole contains only two point charges (or magnetic poles), however various arrangements of multiple charges or currents have dipole moments and may be treated as an effective dipole.
		The physical chemist Peter J. Debye was the first scientist to study molecular dipoles extensively, and dipole moments are consequently measured in units named debyes in his honor.
	www.brainyencyclopedia.com /encyclopedia/d/di/dipole.html (557 words)

	ipedia.com: Electrical dipole moment Article (Site not responding. Last check: 2007-10-21)
		In physics, the electric dipole moment for a pair of opposite chargess of magnitude q is defined as the magnitude of the charge times the distance between them and the defined direction is toward the...
		In physics, the electric dipole moment for a pair of opposite chargess of magnitude q is defined as the magnitude of the charge times the distance between them and the defined direction is toward the positive charge.
		It is a useful concept in atoms and molecules where the effects of charge separation are measurable, but the distances between the charges are too small to be easily measurable.
	www.ipedia.com /electrical_dipole_moment.html (154 words)

	Electrical dipole moment -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-10-21)
		Electrical dipole moment -- Facts, Info, and Encyclopedia article
		In (The science of matter and energy and their interactions) physics, the electric dipole moment for a pair of opposite (The price charged for some article or service) charges of magnitude q is defined as the magnitude of the charge times the distance between them and the defined direction is toward the positive charge.
		It is also a useful concept in (A material such as glass or porcelain with negligible electrical or thermal conductivity) dielectrics and other applications in solid and liquid materials.
	www.absoluteastronomy.com /encyclopedia/e/el/electrical_dipole_moment.htm (92 words)

	H O L O S C I E N C E - News
		The speed of the electric force must exceed that by a considerable margin for the electron to be a stable particle.
		An immediate objection to this model is that the force between dipoles falls off with the cube of the distance, while gravity diminishes with the square of the distance.
		Now, if we envisage the electric force of gravity acting on a static horizontal disk, it distorts all of the subatomic particles in the disk in the direction of the gravitational force and consequently forms small vertical electric dipoles.
	www.holoscience.com /news/antigravity.html (3003 words)

	About Electroceramics
		The converse piezoelectric effect is the change of strain or stress in a material due to an applied electric field.
		In the absence of external strain, the charge distribution within the crystal is symmetric and the net electric dipole moment is zero.
		Applying an electric field will change the index of refraction by a different amount for the two polarizations, causing further rotation of the polarization vector.
	electroceramics.mit.edu /about.asp (813 words)

	ScienceWeek
		In quantum mechanics, electrons, protons, and neutrons have an intrinsic angular momentum known as "spin", and a magnetic moment parallel or antiparallel to that angular momentum.
		When electrons are combined together to form an atom or ion, there is a resultant angular momentum which is a combination of the intrinsic spin of the electrons and the angular momentum due to their motion about the nucleus, and this is the "spin" of the atom or ion.
		The blue light arose because the crystal responded nonlinearly to the electric field of the incident laser (the index of refraction depends on the light intensity).
	scienceweek.com /2003/sw030404.htm (10906 words)

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