# Formula Symbols - N

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

For other symbols see:  A - B - C - D - E - F - G - H - I - J - K - L - M - N - O - P - Q - R - S - T - U - V - W - X - Y - Z

SymbolGreek SymbolDefinitionUSMetric
$$ln$$ - natural logarithm - -
$$T_n$$ - Neel temperature - -
$$F_n$$ - net force $$lbf$$ $$N$$
$$n.a.$$ - neutral axis (axis connecting beam cross-section centroids) - -
$$T_n$$ - neutral particle temperature - -
$$N$$ - neutron number - -
$$N$$ - normality - $$GEW\;/\;L$$
$$Q_i$$ - normal coordinates - -
$$F_n$$ - normal force $$lbf$$ $$N$$
$$P_n$$ - normal load strength capacity for LRFD design $$lb \;or\; kip$$ $$N \;or\; kN$$
$$V_n$$ - normal shear strength capacity for LRFD beam design $$lb \;or\; kip$$ $$N \;or\; kN$$
$$\sigma$$ sigma normal stress $$lbf\;/\;in^2$$ $$Pa$$
$$\sigma_{\theta}$$ sigma normal stress in any oblique plane $$lbf\;/\;in^2$$ $$Pa$$
$$\mu_n$$ mu nuclear magneton constant constant
$$m_n$$ - nuclear mass - -
$$I \;or\; J$$ - nuclear spin - -
$$A$$ - nucleon number - -
$$N \;or\; x$$ - number - -
$$n$$   number density $$ft^3$$ $$m^3$$
$$N_c$$ - number of coils - -
$$N_c$$ - number of cycles - -
$$N$$ - number of elements - -
$$N$$ - number of molecules - -
$$n$$ - number of moles - -
$$N$$ - number of particles - -
$$P$$ - number of phases - -
$$N$$ - number of power strokes per minute $$min^{-1}$$ -
$$N_t \;,or\; n$$ - number of teeth - -
$$n$$ - number of trust joints, nails or bolts - -
$$Nu$$ - Nusselt Number Dimensionless Number Dimensionless Number
$$N$$ - Nyquist"s number - -