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Dimer STM: Flipping silicon dimers with STM


... to investigate the possibility of using a tungsten tip in scanning tunneling microscopy or atomic force microscopy as a tool to manipulate the surface atoms of Si(100). Calculations of total energy and electronic structure are used to ... more pages

Atoms & Particles

physics.about.com/od/atomsparticles/Atoms_Nuclei_Particles_Other_ ...

... in Vienna, Austria, maintains a number of databases of information on research in these realms of physics. Wikipedia: The Atom This Wikipedia article provides you with basic in-formation on the classical and modern understanding of the ... more pages

The Particle Adventure | What is fundamental? | The atom


... Adventure | What is fundamental? | The atom  Eternal questions  The search for the fundamental  The atom  Is the atom fundamental?  Is the nucleus fundamental?  Are pr-otons and neutrons  fundamental?  The modern atom model  The ... more pages

Spectra and Structure of Atoms and Molecules

chemed.chem.wisc.edu/chempaths/GenChem-Textbook/Spectra-and-Struc ...

... of Molecules: Infared The Visible and Ultraviolet Spectra of Molecules; Molecular Orbitals Metals Spectra and Structure of Atom s and Molecule s In the following sections we are going to study the way in which matter can both absorb energy ... more pages

The Discovery of Atoms and Nuclei


... derived in 1833 the laws of electrolysis (#4), which suggested that in a water solution (and also a molten salt), each atom or molecular fragment carried a fixed electric charge , or a small multiple (twice, three times etc.) of that fixed ... more pages

Models of the Atom


... String Theory The first attempt to construct a physical model of an atom was made by William Thomson (later elevated to Lord Kelvin) in 1867. The most striking property of the atom was its permanence . It was difficult to imagine any small ... more pages

Chem4Kids.com: Atoms: Ions


... a proton number , tells you the number of protons or positive particles in an atom . A normal atom has a neutral charge with equal numbers of positive and negative particles. That means an atom with a neutral charge is one where the number ... more pages

Physics | Channel | MIT Video


... for demos, lab tours, and talks as part of the Cambridge Science Festival.  Researchers demonstrate the principle behind an atom trap with a model, then bring the kids ... What is Cold? Physics , Event What is Cold? MIT-Harvard Center for ... more pages

Hydrogen atom - Wikipedia, the free encyclopedia


... keV Depiction of a hydrogen atom showing the diameter as about twice the Bohr model radius. (Image not to scale) A hydrogen atom is an atom of the chemical element hydrogen . The electrically neutral atom contains a single positively ... more pages

Chem4Kids.com: Atoms: Electrons


... is one type of bonding called electrovalent bonding (ionic), where an electron from one atom is transferred to another atom. You wind up creating two ions as one atom loses an electron and one gains one. The second type of bonding is ... more pages

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