Atom
Scientific Concept
New Hydrogen-Storage Method DiscoveredThis schematic shows the structure of the new material, Xe(H2)7. Freely rotating hydrogen molecules (red dumbbells) surround xenon atoms (yellow). Washington, D.C.-Scientists at the Carnegie Institution have found for the first time that... In this article: Xenon, Hydrogen, Atom, Electron, Diffraction, and Twitter |
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Sydney Morning Herald - World | 2 days ago
Atom-smasher aims for maximum power in 2010
...shut down nine days later when a failure in an electrical connection caused serious damage. On Friday, scientists injected the first sub-atomic particles back into the collider and got the particle beams circulating in the accelerator...
In this article: CERN, Physics, Rolf-Dieter Heuer, God, Fermilab, Chicago, and Geneva
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New Kerala | 2 days ago
Scientists discover new hydrogen-storage method
...of xenon in combination with hydrogen to high pressures in a diamond anvil cell. At about 41,000 times the pressure at sea level, the atoms became arranged in a lattice structure dominated by hydrogen, but interspersed with layers of...
In this article: Hydrogen, Xenon, Electron, Washington, and US
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Boing Boing | 3 days ago
16 Golden Retrievers Teach You About Atoms
Science • atoms • cute • physics • puppies • video 16 Golden Retrievers Teach You About Atoms I've often found that, when I can't understand a concept in science or math, putting it into pictures will make everything make more sense.
In this article: Golden Retriever, Hugo Chavez, Cadre, Trademark, Electron, Creative Commons License, Boing Boing, Sarah Palin, and Robert Mugabe
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USATODAY.com | 4 days ago
Europe: Proton beams circulate in atom smashing machine
...magnets to guide the protons most efficiently. Physicists have used smaller, room-temperature colliders for decades to study the atom. They once thought protons and neutrons were the smallest components of the atom's nucleus, but the...
In this article: CERN, Fermilab, Geneva, Europe, All rights reserved, and Big Bang
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Daily Mail | 5 days ago
GCSE quiz backfires on Balls as he makes 'schoolboy error' trying to outwit Tory shadow
...Michael Gove (L) and Ed Balls clashed in the Commons Goading Tory education spokesman Michael Gove, he asked: 'Explain how a fluoride atom can change into a fluoride ion. You're well known as an erudite and intelligent man. What's the...
In this article: Ed Balls, Fluoride, Michael Gove, Fluorine, Electron, Hydrogen, and Royal Society
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Ars Technica | 6 days ago
I'm In Ur Atom, Probing Ur Nucleus
I'm in ur atom, probing ur nucleus Recent analysis of data gathered from accelerator experiments at the Thomas Jefferson National Accelerator looks at how the protons and neutrons are arranged in the nuclei of small atoms, and how a theory...
In this article: Neutron, Quark, Electron, Beryllium, Physical Review Letters, Cadre, and Lepton
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Wired: Epicenter | November 08, 2009
Singularity University: Rearranging Atoms With Ralph Merkle
"If you rearrange the atoms in coal, you get diamond. If you rearrange the atoms in sand, you get silicon. How atoms are arranged is fundamental to all material aspects of life," says Ralph Merkle, currently senior research chair at the...
In this article: Coal, Physics, Oxygen, Wired.com, Richard Feynman, and IBM
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Description from Wikipedia:
The atom is a basic unit of matter consisting of a dense, central nucleus surrounded by a cloud of negatively charged electrons. The atomic nucleus contains a mix of positively charged protons and electrically neutral neutrons (except in the case of hydrogen-1, which is the only stable nuclide with no neutron). The electrons of an atom are bound to the nucleus by the electromagnetic force. Likewise, a group of atoms can remain bound to each other, forming a molecule. An atom containing an equal number of protons and electrons is electrically neutral, otherwise it has a positive or negative charge and is an ion. An atom is classified according to the number of protons and neutrons in its nucleus: the number of protons determines the chemical element, and the number of neutrons determine the isotope of the element.
The name atom comes from the Greek ἄτομος/átomos, α-τεμνω, which means uncuttable, something that cannot be divided further. The concept of an atom as an indivisible component of matter was first proposed by early Indian and Greek philosophers. In the 17th and 18th centuries, chemists provided a physical basis for this idea by showing that certain substances could not be further broken down by chemical methods. During the late 19th and early 20th centuries, physicists discovered subatomic components and structure inside the atom, thereby demonstrating that the 'atom' was divisible. The principles of quantum mechanics were used to successfully model the atom.
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