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Topic: Cubical atom

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	Atom
		Atoms are not divisible by chemical reactions but are now known to be composed of even smaller subatomic particles.
		The diameter of an atom is generally in the range of 10pm to 100pm.
		Atoms are generally classified by the atomic number, which corresponds to the number of protons in the atom.
	www.guajara.com /wiki/en/wikipedia/a/at/atom.html (805 words)

	Atom
		Atoms having the same atomic number, but different atomic masses (due to their different numbers of neutrons), are called isotopes.
		The simplest atom is the hydrogen atom, having atomic number 1 and consisting of one proton and one electron.
		Ions are atoms that possess a net charge due to an imbalance in the number of protons and electrons.
	encyclopedia.codeboy.net /wikipedia/a/at/atom.html (630 words)

	Atom
		Atoms are composed mostly of empty space, but also of smaller subatomic particles.
		At the center of the atom is a tiny positive nucleus composed of nucleons (protons and neutrons).
		There is a strong tendency for atoms to completely fill (or empty) the outer electron shell, which in hydrogen and helium has space for two electrons, and in all other atoms has space for eight.
	www.starrepublic.org /encyclopedia/wikipedia/a/at/atom.html (589 words)

	atom
		An atom is the smallest particle differentiable as a certain chemical element; when an atom of an element is divided, it ceases to be that element.
		Atoms with different numbers of neutrons are called isotopes of the chemical element.
		At the center of the atom is a tiny, positively charged nucleus composed of protons and neutrons (known as nucleons).
	en.mcfly.org /atom (1116 words)

	Atom
		Atoms of the same element can have different numbers of neutrons, as long as the number of protons or electrons does not change.
		Molecules are made up of multiple atoms; For example, a molecule of water is a combination of 2 hydrogen and one oxygen atoms.
		Using inflation theory, the number of atoms in the observable universe can be estimated to be between 4.0e78 and 6.0e79.
	www.keywordmage.net /at/atom.html (1801 words)

	Education Resources » Atoms
		Although the name “atom” was applied at a time when atoms were thought to be indivisible, it is now known that the atom can be broken down into a number of smaller components.
		Atoms are much smaller than the wavelengths of light that human vision can detect, so atoms cannot be seen in any kind of optical microscope.
		Atoms are generally classified by their atomic number Z, which corresponds to the number of protons in the atom.
	www.thecatalyst.org /resource/2006/04/21/Atoms (3963 words)

	Cubical atom - Wikipedia, the free encyclopedia
		The cubical atom was an early atomic model in which electrons were positioned at the eight corners of a cube in a non-polar atom or molecule.
		This theory was developed in 1902 by Gilbert N. Lewis and published in 1916 in the famous article "The Atom and the Molecule" and used to account for the phenomenon of valency.
		It was further developed in 1919 by Irving Langmuir as the cubical octet atom.
	en.wikipedia.org /wiki/Cubical_atom (434 words)

	For alternative meanings see atom disambiguation atom disambiguation ...
		Atoms are the basic constituents of molecule molecules and ordinary matter matter.
		Atoms having the same atomic number, but different atomic masses (due to their different numbers of neutrons), are called isotope isotopes.
		The simplest atom is the hydrogen atom hydrogen atom, having atomic number 1 and consisting of one proton and one electron.
	www.biodatabase.de /atom (690 words)

	Atom Summary
		Atoms and the subatomic particles that comprise them, are the elementary building blocks of material substances.
		Although the term atom, derived from the Greek word atomos, meaning indivisible, would seem inappropriate for an entity that, as science has established, is divisible, the word atom still m...
		Atoms are the smallest particles of matter that have distinct physical and chemical properties.
	www.bookrags.com /Atom (391 words)

	Distributed Molecular Modeling...
		Because atoms may interact over distances of several nanometers, pairs of adjacent processors would need to be in constant communication during the progress of a simulation, exchanging large quantities of data at every time step.
		An atom may also influence another atom at a future time, even though it is more than one cut-off radius away from it, by having a velocity that carries it toward that atom.
		atoms occupy a cube with a linear dimension of roughly 21 nm.
	www.foresight.org /Conferences/MNT05/Papers/Ware/index.html (7683 words)

	Alchemy :: Chemistry : Atomic Structure (Site not responding. Last check: 2007-10-12)
		* At the center of the atom is a tiny, positively charged nucleus composed of protons and neutrons (known as nucleons).
		As an example, the size of a Hydrogen atom is estimated to be approximately 1.2×10-10m.
		Compare this to the size of the Proton which is the only particle in the nucleus of the Hydrogen atom which is approximately 0.87×10-15m.
	www.alchemy-education.com /Chem/Atom.html (951 words)

	ChemTeam: G.N. Lewis & The Covalent Bond
		The atom is composed of the kernel and an outer atom or shell, which in the case of the neutral atom, contains negative electrons equal in number to the excess of positive charges of the kernel, but the number of electrons in the shell may vary during chemical change between 0 and 8.
		The atom tends to hold an even number of electrons in the shell and especially to hold eight electrons which are normally arranged symmetrically at the eight corners of a cube.
		Thus two carbon atoms with a single bond strive to keep their kernels as far part as possible, and this condition is met when the adjoining corners of the two tetrahedra lie in the line joining the centers of the tetrahedra.
	dbhs.wvusd.k12.ca.us /webdocs/Chem-History/Lewis-1916/Lewis-1916.html (6968 words)

	Body
		If the sun were the nucleus of a larger atom, its electron(s) in the outer shell would be considerably more than 10 billion miles out in space, well over three times the distance that the planet Pluto is actually away from the sun.
		Consider first that 90% of all atoms in a typical star and also in the universe as a whole are hydrogen atoms.
		Since protons and neutrons contribute almost all the mass of an atom and since protons and neutrons have about equal mass, this means that the total number of protons and neutrons in the sun are 330,000 as plentiful as all the protons and neutrons in the earth.
	pages.prodigy.net /jhonig/bignum/qasize2.html (1096 words)

	Process for the preparation of high bromide cubical grain emulsions - Patent 7008761
		The term "cubic grain" is employed to indicate a regular grain is that bounded by six {100} crystal faces.
		The term "cubical grain" is employed to indicate grains that are at least in part bounded by {100} crystal faces satisfying the relative orientation and spacing of cubic grains.
		Formation of cubic grains during grain growth, e.g., may be favored by controlling the relative silver and halide ion solution concentrations as well known in the art (e.g., maintaining pAg at 8.10 or less, preferably 7.80 or less and more preferably 7.60 or less).
	www.freepatentsonline.com /7008761.html?highlight=4242445 (7927 words)

	Portrait of an Atom
		This essay was first published as a booklet designed to accompany a showing of Snelson's designs for the atom at Baltimore's Maryland Science Center in 1981.
		Because it is my work to imagine and build sculptures from physical forces, the electronic atom's form and workings have seemed a kind of sculptural riddle, and as I see it, one not yet solved convincingly by science.
		The features of my picture come close to those we should expect of an atom in order to see it as a workable device capable of doing all those remarkable things an atom is able to do.
	www.kennethsnelson.net /atom/Portrait1.html (1067 words)

	Atom - Article from FactBug.org - the fast Wikipedia mirror site
		Though only 90 naturally occurring elements exist, atoms of these elements are able to bond into molecules and other types of chemical compounds.
		Each orbital can hold up to two electrons, and is governed by three quantum numbers: the principal, azimuthal, and magnetic.
		Until the 19th century and the development of the Bohr model, it was believed that atoms were tiny, indivisible particles.
	www.factbug.org /cgi-bin/a.cgi?a=902 (1943 words)

	Process for the preparation of high bromide cubic grain emulsions - Patent 6753134
		The process according to claim 16, wherein the high bromide cubic grains have an average cubic edge length of less than or equal to 0.35 micrometers and an average roundness index Q of less than or equal to 0.32.
		The process according to claim 17, wherein the high bromide cubic grains have an average cubic edge length of less than or equal to 0.33 micrometers and an average roundness index Q of less than or equal to 0.30.
		In accordance with a particular embodiment, the method of the invention has surprisingly been found to improve the "cubicity" of cubic emulsion grains, especially for finer grain emulsions, as demonstrated by the preparation of emulsions comprising cubic grains having a lower average roundness index.
	www.freepatentsonline.com /6753134.html (5894 words)

	More on Atoms
		Here is free textual content related to Atoms to utilize on your web site in accordance wi th the GNU license.
		The principal quantum number is at the right of each row and the azimuthal quantum number is denoted by letter at top of each column.
		Using inflation theory, the number of atoms in the observable universe can be estimated to be between 4×1078 and 6×1079.
	www.artilifes.com /atoms.htm (2259 words)

	Langmuir on Octet Theory
		The electrons in the most stable atoms, namely, those of the inert gases, have positions symmetrical with respect to a plane called the equatorial plane, passing through the nucleus at the other at the center of the atom.
		Where e is the total number of available electrons in the shells of all the atoms in a molecule; n is the number of octets forming the outside shells of the atoms and p is the number of pairs of electrons held in common by the octets (Postulate 8).
		For example, the chlorine atom in chlor-acetic acid, because of the relatively large charge on its kernel, as compared for example with a carbon atom, tends to displace towards itself the electrons holding it to the carbon atom.
	dbhs.wvusd.k12.ca.us /webdocs/Chem-History/Langmuir-1919.html (3107 words)

	Cold War Resource 1: A Quick Look at How We entered the Nuclear Age
		The atom bomb, in fact, became the trigger for the early hydrogen bombs..
		Atoms are about 100,000 times smaller than an average human red blood cell.
		Atoms with the same number of protons and electrons are called neutral atoms.
	learning.turner.com /cnn/coldwar/cw_nclr.html (3664 words)

	Description of my past research
		1.2 André permutations and the cd-index of Eulerian cubical and simplicial posets
		We show a cubical analogue of Stanley's conjecture about the connection between the cd-index of semisuspended simplicial shelling components and the reduced variation polynomials of certain subclasses of André permutations.
		I prove this nonnegativity for all cubical complexes obtained as a barycentric subdivision of a simplicial sphere.
	www.math.uncc.edu /~ghetyei/html/dpr.html (1620 words)

	CSAIL Research Abstract
		One degree of freedom allows the atom to rotate 180 degrees relative to its bond connection, and the other degree of freedom allows the atom (and therefore the entire Molecule) to rotate 180 degrees relative to one of the inter-Molecule connectors.
		The atoms are required for connection during a convex transition, and are also sufficient for translations and concave transitions.
		Further analysis shows that each of the atoms require only two degrees of freedom: (1) rotation about the bond, and (2) rotation of one of the connection points whose face is adjacent to the face which connects to the rigid link.
	publications.csail.mit.edu /abstracts/abstracts05/rus4/rus4.html (1322 words)

	Krane, Chapter 11, Question 5
		The atoms are in thermal motion and therefore do not occupy exactly the positions of a perfectly aligned lattice.”
		This thermal motion is of course temperature dependent, and the greater the temperature the greater the deviation from a perfectly aligned lattice and the greater the scattering, hence the greater the resistance.
		In a semiconductor, the greater the temperature the more electrons there are that exceed the Fermi energy and are able to jump the gap and enter the conduction banc, hence the lower the resistance.
	www.physics.utoledo.edu /~ljc/krane11q.htm (224 words)

	Ideal Gases
		This is not strictly true, of course; interactions between the atoms of a gas make its potential energy different when the atoms are (on average) close together or far apart.
		Now let's examine our gas from a more microscopic, ``mechanical'' point of view: picture one atom bouncing around inside a cubical container which is a length L on a side.
		In the ``ideal'' approximation, atoms never hit each other, but only bounce off the walls, so our consideration of a single atom should be independent of whether or not there are other atoms in there with it.
	musr.physics.ubc.ca /~jess/hr/skept/Therm/node21.html (677 words)

	Energy to confine particles in a carbon atom (Site not responding. Last check: 2007-10-12)
		The carbon atom, in particular an atom of the isotope
		Taking the diameter of a carbon atom from the periodic table and calculating the minimum energy consistent with the uncertainty principle for a cubical volume of that dimension, we obtain a value of 10.4 eV.
		The confinement energy for keeping a proton inside the a cubical volume of dimension equal to the nuclear diameter is 5.6 MeV.
	hyperphysics.phy-astr.gsu.edu /hbase/quantum/carbconfine.html (419 words)

	The Cubical Lattice Concept \| The First Pile \| History of the Atomic Age \| atomicarchive.com
		One of the first things that had to be determined was how best to place the uranium in the reactor.
		Fermi and Szilard suggested placing the uranium in a matrix of the moderating material, thus forming a cubical lattice of uranium.
		Of all the materials which possessed the proper moderating qualities, graphite was the only one which could be obtained in sufficient quantity of the desired degree of purity.
	www.atomicarchive.com /History/firstpile/firstpile_04.shtml (441 words)

	Atom Glossary - Dictionary definition [define: Atom] of Atom
		Atom Glossary - Dictionary definition [define: Atom] of Atom
		[1913 Webster] There was not an atom of water.
		atom n 1: (physics and chemistry) the smallest component of an element having the chemical properties of the element 2: (nontechnical usage) a tiny piece of anything [syn: molecule, particle, corpuscle, mote, speck] See also: [molecule] [particle] [corpuscle] [mote] [speck]
	www.blogdict.com /glossary/Atom.html (146 words)

	Atomic Spacing (Site not responding. Last check: 2007-10-12)
		Since one copper atom has a mass of 63u x 1.66 x 10
		Consider this to be a cubical arrangement of n x n x n copper atoms, where n is the number on one edge of the cube.
		The spacing between copper atoms is about 2.3 x 10
	bama.ua.edu /~stjones/AtomSpacing.htm (168 words)

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