# Formula Symbols - G

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

SymbolGreek SymbolDefinitionUSMetric
$$Ga$$ - Galilei number dimensionless number dimensionless number
$$\gamma$$ gamma gamma ray - -
$$G$$ - gas - -
$$R$$ - gas constant $$ft-lbf/lbmol-^\circ R$$ $$J/kmol\cdot K$$
$$k$$ - gear speed factor - -
$$q$$ - generated heat $$Btu/min$$ $$J/kW$$
$$f$$ - gradient - -
$$Gz$$ - Graetz number dimensionless number dimensionless number
$$Gr$$ - Grashof number dimensionless number dimensionless number
$$g$$ - gravity $$ft/sec^2$$ $$m/s^2$$
$$x$$ - gravimetric fraction - -
$$g$$ - gravitational acceleration $$ft/sec^2$$ $$m/s^2$$
$$F$$ - gravitational force $$ft/sec^2$$ $$m/s^2$$
$$F_g$$ - gravitational force $$ft/sec^2$$ $$m/s^2$$
$$G$$ - gravitational constant $$ft/sec^2$$ $$m/s^2$$
$$g_c$$ - gravity conversion constant $$lbm-ft/lbf-sec^2$$ -