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N
N
N: See Normal.
NACE: National Association of Corrosion Engineers.
NaCl: Sodium chloride salt. Halite.
Nanometer: One billionth of a meter.
Nanotesla (Seismic): The units in which magnetic survey maps are contoured.
1 nanotesla = 10
−9
tesla, 1 nanotesla = 10
−9
Wb/m
2
, 1 nanotesla = 10
−1
lines/m
2
,
1 nanotesla = 10
−5
lines/cm
2
, 1 nanotesla = 10
−5
gauss, 1 nanotesla = 1 gamma.
NaOH: Sodium hydroxide.
Naphtha: (1) A generic term applied to a petroleum fraction with an approxi-
mate boiling range between 122°F and 400°F. (2) A colorless liquid product of
petroleum distillation that is used as a manufacturing solvent, a dry-cleaning
uid, and a gaso ...