Formula Symbols - L

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

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L

SymbolGreek SymbolDefinitionUSMetricValue
\(L\) - Lagrangian function - - -
\(La\) - Laplace number dimensionless dimensionless  -
\(L\) - latent heat \(Btu \;/\; lbm\) \(J \;/\; kg\)  -
\(L\), \(\;L_s\)   latent heat of steam \(Btu \;/\; lbm\) \(J \;/\; kg\)  -
\(h_{fg}\) - latent heat of vaporization \(Btu \;/\; lbm\) \(J \;/\; kg\)  -
\(\delta '\) delta lateral deflection \(deg\) \(rad\)  -
\(\epsilon '\), \(\;\epsilon_t\) epsilon lateral strain (transversal strain) \(ft\) \(m\)  -
\(a\), \(\;L\), \(\;l\) - length \(in \;or\; ft\) \(mm \;or\; m\)  -
\(l_d\), \(\;\Delta l\) delta length differential - -  -
\(\Gamma\) Gamma level width - -  -
\(Le\) - Lewis number dimensionless dimensionless  -
\(C_l\) - lift coefficient dimensionless dimensionless  -
\(L\) - lift force \(lb\) \(N\)  -
\(C_L\) - lift number dimensionless dimensionless  -
\(c\) - light (vacuum) \(ft\;/\;sec\) \(m\;/\;s\)  -
\(\lambda_c\) lambda linear attenuation coefficient - -  -
\(\lambda\) lambda linear concentration dimensionless dimensionless  -
\(s\) - linear displacement \(ft\) \(m\)  -
\(\alpha_l\) alpha linear expansion coefficient \(ft^3\) \(m^3\)  -
\(p\) - linear momentum \(lb-ft\;/\;sec\) \(kg-m\;/\;s\)  -
\(p\) - linear momentum vector \(lb-ft\;/\;sec\) \(kg-m\;/\;s\)  -
\(R\), \(\;R_l\) - linear range - -  -
\(S\), \(\;S_l\) - linear stopping power - -  -
\(e\), \(\;\epsilon\) epsilon linear strain - -  -
\(a_t\) - linear tangential path \(ft\) \(m\)  -
\(\alpha\) alpha linear thermal expansion \(in\) \(mm\)  -
\(\alpha_l\) alpha linear thermal expansion coefficient \(in\) \(mm\)  -
\(F_f\) - liquid critical pressure ratio factor dimensionless dimensionless  -
\(T_i\) - liquid inlet temperature \(^\circ F\) \(C\)  -
\(F_l\) - liquid pressure recovery factor dimensionless dimensionless  -
\(T_o\) - liquid outlet temperature \(^\circ F\) \(C\)  -
\(SG_l\), \(\;G_f\) - liquid specific gravity dimensionless dimensionless  -
\(c_l\) - liquid specific heat \(Btu\;/\;lb- ^\circ F\) \(kJ\;/\;kg-K\)  -
\(LL\) - live load - -  -
\(L\) - live load for LRFD design - -  -
\(\gamma_L\) gamma live load factor in LRFD steel design - -  -
\(P\) - load \(lbf\) \(N\)  -
\(C_F\) - load duration factor for wood design - -  -
\(LRFD\) - load and resistance factor design - -  -
\(\omega\) omega load per unit area \(lbf\;/\;ft^2\) \(N\;/\;m^2\)  -
\(\omega\) omega load per unit length \(lbf\;/\;ft\) \(N\;/\;m\)  -
\(w\) - load per unit length on a beam \(lb\;/\;ft\) \(N\;/\;m\)  -
\(K\) - loading factor - -  -
\(\chi\) chi Lockhart-Martinelli parameter dimensionless dimensionless  -
\(x\), \(\;y\) - location \(in\) \(m\)  -
\(\Lambda\) Lambda logarithmic decrement - -  -
\(LMTD\) - logarithmic mean temperature differential - -  -
\(s\) - long range order parameter - -  -
\(\delta\) delta longitudinal deflection - -  -
\(\epsilon\), \(\;\epsilon_a\) epsilon longitudinal strain (axial strain) \(ft\) \(m\)  -
\(\sigma_l\) sigma longitudinal stress \(ft\) \(m\) -
\(L\) - Lorenz coefficient - -  -
\(n_o\) - Loschmidt constant constant constant \(2.686\;7805\;x\;10^{25}\;m^{-3}\)
\(K\) - loss coefficient dimensionless dimensionless  -
\(F_l\) - loss factor - -  -
\(L_n\) - loudness level - -  -
\(h\), \(\;k\), \(\;l\) - Love numbers dimensionless dimensionless  -
\(LHV\) - lower heating value \(Btu \;/\; lbm\) \(kJ \;/\; kg\)  -
\(LRFD\) - load and resistance factor design - -  -
\(L\) - luminosity - \(W\)  -
\(K_{cd}\) - luminous efficacy constant constant  -
\(S\) - Lundquist number dimensionless dimensionless  -
Symbol Greek Symbol Definition US Metric Value