Formula Symbols - E

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
\(g\) - earth (mean) \(ft/sec^2\) \(m/s^2\)
\(e\) - eccentricity in mm
\(Ec\) - Eckert number dimensionless number dimensionless number
\(E\) - effectiveness - -
\(\xi \) xi effectiveness - -
\(\eta \) eta efficiency \(percent\) \(percent\)
\(E\) - elasticity - -
\(El\) - elasticity number dimensionless number dimensionless number
\(q\) - electric charge - -
\(\phi \) phi electric potential - -
\(\sigma \) sigma electrical conductivity - -
\(R_e\) - electrical resistance \(\Omega\) \(\Omega\)
\(\rho \) rho electrical resistivity \(\Omega^{-in}\) \(\Omega^{-cm}\)
\(e\) - electron - -
\(F_e \) - electrostatic force - -
\(y\) - elevation \(ft\) \(m\)
\(y_i\) - elevation at inlet \(ft\) \(m\)
\(y_o\)  - elevation at outlet \(ft\) \(m\)
\(\Delta y\) Delta elevation differential \(ft\) \(m\)
\(\gamma \) gamma empirical constant \(1/^\circ F\) \(1/K\)
\(r\) - empirical rate - -
\( E\) - energy in-lbf J
\( h\) - enthalpy \(Btu/lbm\) \(kJ/kg\)
\(s\) - entropy \(Btu/lbm-^\circ R\) \(kJ/kg\cdot K\)
\(\Delta S\) Delta entropy differential \(Btu/lbm-^\circ R\) \(kJ/kg\cdot K\)
\(\phi \) phi entropy function \(Btu/lbm ^\circ R\) \(kJ/kg \cdot K\)
\(EW\) - equivalent weight \(lbm/lbmol\) \(kg/kmol\)
\(Er\) - Ericksen number dimensionless number dimensionless number
\(v_e\) - escape velocity \(ft/sec\) \(m/s\)
\(Eu\) - Euler number dimensionless number dimensionless number
\(Y\) - expansion factor - -