hydrogen atom

(redirected from Atomic hydrogen)
Also found in: Thesaurus, Encyclopedia.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.hydrogen atom - an atom of hydrogenhydrogen atom - an atom of hydrogen      
hydrogen ion - a positively charged atom of hydrogen; that is to say, a normal hydrogen atomic nucleus
atom - (physics and chemistry) the smallest component of an element having the chemical properties of the element
acid hydrogen, acidic hydrogen - a hydrogen atom in an acid that forms a positive ion when the acid dissociates
deuterium, heavy hydrogen - an isotope of hydrogen which has one neutron (as opposed to zero neutrons in hydrogen)
References in periodicals archive ?
It is even hot enough to break up hydrogen molecules into atomic hydrogen which causes the atmosphere to act more like the atmosphere of a low-mass star than like a planetary atmosphere.
According to the study, the low albedo suggests that WASp-12b has an atmosphere with atomic hydrogen and helium - as opposed to molecules of those elements.
After decades of precision measurements, especially laser spectroscopy in atomic hydrogen, QED is considered the most successful and best-tested theory in physics.
His mention of H-beta filters suggests there is some advantage to using those rather than an H-alpha filter for observing extended celestial objects containing atomic hydrogen.
The spectre of Prout's hypothesis, however, lingers in chemistry in that many calculations, and more numerous qualitative explanations, of atomic and molecular properties are based on an assumption that all electrons in any atom behave according to the central field of the model of atomic hydrogen.
Due to the upgrade of the Very Large Array, this is the first time we've been able to directly measure atomic hydrogen in a galaxy this far from Earth," lead author, Dr Ximena Fernandez from Rutgers, the State University of New Jersey, said.
These reactions facilitate the deposit of atomic hydrogen onto condensed hydrogen structures, CHS [9, 11,12].
Interactions between halide ions and atomic hydrogen or deuterium have recently fascinated new interest and curiosity for low-energy collisions (below 8 eV) leading to associative attachment, a process important in many plasmas.
Among the topics are synthesizing zinc oxide nanoparticles by solid state reactions and its influence on a zinc electrode, the effect of isothermal treatment on the microstructure and properties of high performance steel, simulation and casting processes for ductile iron wind generator rotor shaft, effects of additives on semiconduction transformation in lead zirconate titanate ceramic induced by atomic hydrogen, tungsten cathodes doped with rare earth for pulsed xenon lamps, and the shielding effect in the sacrificial anode cathodic protection system.
First atomic hydrogen spectral line images of a nearby galaxy, 14 March 2012.
Dame found evidence for the new structure while reviewing galactic data on atomic hydrogen gas, which radiates at a radio wavelength of 21 centimeters.