How did two atoms of hydrogen wind up welded to a single atom of oxygen?
When one is a Rydberg atom, the two atoms form a Rydberg molecule.
Like alcohols, fatty acids are molecules that have lots of hydrogen and carbon atoms, and a small amount of oxygen (in their case two oxygen atoms, rather than one).
The water molecules' two hydrogen atoms, which are split from oxygen by electrolysis, go in different directions.
The escapement of this clock consists of two entangled atoms, one of which is used to read the inherent vibrations of the other.
Each fission reaction splits the nucleus of an atom of uranium-235 or plutonium-239 into two smaller atoms and releases a great deal of energy.
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Some people include things as small as a tenth of a nanometre, which is about the size of the bond between two carbon atoms.
It is produced by fusing together two hydrogen atoms.
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Genesis had painstakingly deployed the collector tiles and foil over the last two years to capture atoms from the solar wind.
These machines work by separating, then recombining, two beams of precisely synchronised atoms of, say, neon.
WIMPS. The more massive members of each lepton pair are the electrically charged electron (the outer constituent of atoms) and two other particles that resemble electrons in all measurable ways except that they are heavier, and are unstable in today's modern universe.
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Butanol, however, has four carbon atoms in its molecules, whereas ethanol has two.
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The team proved that among their 10 million antiprotons and 700 million positrons, 38 stable atoms of antihydrogen were formed, lasting about two tenths of a second each.
Dr Fujita and Dr Shimizu have combined these two advances to create a holographic projection system for beams of atoms.
Ozone is a version of oxygen with three atoms per molecule, whereas normal, everyday oxygen has only two.
Just to prove that his atoms really were acting as single waves, Dr Ketterle made two condensates at the same time, and allowed them to merge, thus creating ripple-like interference patterns of the sort that might be seen if two stones were thrown simultaneously into the same pond.
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