# Formula Symbols - N

Written by Jerry Ratzlaff. Posted in Nomenclature & Symbols for Engineering, Mathematics, and Science

SymbolGreek SymbolDefinitionUSMetric
$$N$$ - normality - $$GEW/L$$
$$F_n$$ - normal force $$lbf$$ $$N$$
$$\sigma$$ sigma normal stress $$lbf/in^2$$ $$Pa$$
$$N$$ - number - -
$$N_c$$ - number of coils - -
$$N_c$$ - number of cycles - -
$$N$$ - number of molecules - -
$$n$$ - number of moles - -
$$N_t$$ - number of teeth on a gear - -
$$Nu$$ - Nusselt Number Dimensionless Number Dimensionless Number