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hydrogen_atom
has definitions from the fields of chemistry,physics
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[ noun ] (chemistry,physics) an atom of hydrogen
Used in print (1961 Research Highlights of the National Bureau of...)Very small concentrations of these hydrides should be detectable ; in interstellar gas , concentrations as low as * * f molecules / * * f may be sufficient , as compared to the * * f hydrogen_atoms * * f required for detection of the 21 - cm line . Related terms |
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