Formula Symbols - L

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

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L

SymbolGreek SymbolDefinitionEnglishMetricSIValue
\(L\) - Lagrangian function - - - -
\(La\) - Laplace number dimensionless -
\(Q_l\) - latent heat \(\large{\frac{Btu}{lbm}}\) \(\large{\frac{kJ}{kg}}\) \(kJ - kg^{-1}\) -
\(L\), \(\;L_s\)   latent heat of steam - - - -
\(h_{fg}\) - latent heat of vaporization \(\large{\frac{Btu}{lbm}}\) \(\large{\frac{kJ}{kg}}\) \(kJ - kg^{-1}\) -
\(\delta '\) delta lateral deflection \(ft\) \(m\) \(m\) -
\(\epsilon '\), \(\epsilon_t\) epsilon lateral strain (transversal strain) \(ft\) \(m\) \(m\) -
\(v_0\) - launch velocity of a projectile \(\large{\frac{ft}{sec}}\) \(\large{\frac{m}{s}}\) \(m - s^{-1}\) -
- - law of conservation - - - -
\(L\) - law of conservation of angular momentum \(\large{\frac{lbm-ft^2}{sec}}\) \(\large{\frac{kg-m^2}{s}}\) \(kg - m^2 - s^{-1}\) -
- - law of conservation of energy - - - -
\(\overrightarrow{p}\)   law of conservation of linear momentum \(\large{\frac{lbm-ft}{sec}}\) \(\large{\frac{kg-m}{s}}\) \(kg - m - s^{-1}\) -
- - law of conservation of mass - - - -
- - law of conservation of mechanical energy - - - -
- - law of conservation of momentum - - - -
- - law of thermodynamics - - - -
\(G\) - leak rate - - - -
\(a\), \(\;L\), \(\;l\) - length \(ft\) or \(in\) \(m\) or \(mm\) \(m\) or \(mm\) -
\(l_d\), \(\;\Delta l\) delta length differential \(ft\) or \(in\) \(m\) or \(mm\) \(m\) or \(mm\) -
\(L\) - length of crest vertical curve for stopping sight distance \(ft\) \(m\) \(m\) -
\(L\) - length of vertical curve \(ft\) \(m\) \(m\) -
\(\epsilon\) epsilon Lenz's law - -  - -
\(\Gamma\) Gamma level width - - - -
\(Le\) - Lewis number dimensionless -
\(C_l\) - lift coefficient dimensionless -
\(L\) - lift force \(lbf\) \(N\) \(kg - m - s^{-2}\)  -
\(C_L\) - lift number dimensionless -
\(c\) - light (vacuum) - - - -
\(d\) - lightning strike distance \(mi\) \(km\) \(km\) -
\(\overrightarrow{\lambda_c}\) lambda linear attenuation coefficient - - - -
\(\overrightarrow{\lambda}\) lambda linear concentration dimensionless -
\(\overrightarrow{s}\) - linear displacement \(ft\) \(m\) \(m\) -
\(\overrightarrow{\alpha_l}\) alpha linear expansion coefficient \(\large{ \frac{in}{in-F} }\) \(\large{ \frac{mm}{mm-C} }\) \(mm - mm^{-1} - C^{-1}\) -
\(\overrightarrow{f}\) - linear frequency \(Hz\) \(Hz\)  \(s^{-1}\) -
\(\overrightarrow{Imp}\) - linear impulse \(lbf-sec\) \(N-s\) \(kg-m-s^{-1}\) -
\(\overrightarrow{p}\) - linear momentum \(\large{\frac{lbm-ft}{sec}}\) \(\large{\frac{kg-m}{s}}\) \(kg - m - s^{-1}\) -
\(\overrightarrow{p}\) - linear momentum vector - - - -
\(\overrightarrow{s}\) - linear motion \(ft\) \(m\) \(m\) -
\(\overrightarrow{e}\), \(\;\overrightarrow{\epsilon}\) epsilon linear strain - - - -
\(\overrightarrow{a_t}\) - linear tangential path \(ft\) \(m\) \(m\) -
\(\overrightarrow{\Delta l}\) - linear thermal expansion \(\large{ \frac{in}{in-F} }\) \(\large{ \frac{mm}{mm-C} }\) \(mm - mm^{-1} - C^{-1}\) -
\(\overrightarrow{\alpha_l}\) alpha linear thermal expansion coefficient \(\large{ \frac{in}{in-F} }\) \(\large{ \frac{mm}{mm-C} }\) \(mm - mm^{-1} - C^{-1}\) -
- - linear thermal restrained expansion - - - -
\(F_f\) - liquid critical pressure ratio factor dimensionless -
\(LI\) - liquid index dimensionless -
\(T_i\) - liquid inlet temperature \(F\) \(C\) \(x+273.15\;K\) -
\(LL\) - liquid limit dimensionless -
\(K_la\) - liquid mass transfer coefficient \(\large{\frac{1}{sec}}\) \(\large{\frac{1}{s}}\) \(1-s^{-1}\) -
\(F_l\) - liquid pressure recovery factor dimensionless -
\(T_o\) - liquid outlet temperature \(F\) \(C\) \(x+273.15\;K\) -
\(F_l\) - liquid pressure recovery factor dimensionless -
\(SG_l\), \(\;G_f\) - liquid specific gravity dimensionless -
\(c_l\) - liquid specific heat \(\large{\frac{Btu}{lbm-F}}\) \(\large{\frac{J}{kg-K}}\) \(J - kg - K^{-1}\)  -
\(LL\) - live load - - - -
\(L\) - live load for LRFD design - - - -
\(\gamma_L\) gamma live load factor in LRFD steel design - - - -
\(P\) - load \(lbf\) \(N\) \(kg - m - s^{-2}\) -
\(C_F\) - load duration factor for wood design - - - -
\(LRFD\) - load and resistance factor design - - - -
\(\omega\) omega load per unit area \(\large{\frac{lbf}{ft^2}}\) \(\large{\frac{N}{m^2}}\) \(N - m^{-2}\)  -
\(\omega\) omega load per unit length \(\large{\frac{lbf}{ft}}\) \(\large{\frac{N}{m}}\) \(N - m^{-1}\) -
\(w\) - load per unit length on a beam \(\large{\frac{lbf}{ft}}\) \(\large{\frac{N}{m}}\) \(N - m^{-1}\) -
\(K\) - loading factor - - - -
\(\chi\) chi Lockhart-Martinelli parameter dimensionless -
\(x\), \(\;y\) - location \(in\) \(m\) \(m\) -
\(\Lambda\) Lambda logarithmic decrement - - - -
\(LMTD\) - logarithmic mean temperature differential \(\large{\frac{Btu}{lbm}}\) \(\large{\frac{J}{kg}}\) \(J-kg^{-1}\) -
\(\delta\) delta longitudinal deflection - - - -
\(\epsilon\), \(\;\epsilon_a\) epsilon longitudinal strain (axial strain) \(\large{\frac{in}{in}}\) \(\large{\frac{mm}{mm}}\) \(mm-mm^{-1}\) -
\(\sigma_l\) sigma longitudinal stress \(\large{\frac{lbf}{in^2}}\) \(MPa\) \(N-mm^{-2}\) -
\(L\) - Lorentz coefficient - - - -
\(F\) - Lorentz force \(T\) \(T\) \(kg-s^{-2}-A^{-1}\) -
\(n_o\) - Loschmidt constant \(ft^3\) \(m^3\) \(m^3\) \(2.686\;7774\;(47)\;x\;10^{25}\) \(\large{m^3}\)
\(K\) - loss coefficient dimensionless -
\(L_n\) - loudness level - - - -
\(h\), \(\;k\), \(\;l\) - Love numbers dimensionless -
\(L\) - luminosity - - - -
\(K_{cd}\) - luminous efficacy constant -
\(S\) - Lundquist number dimensionless -
Symbol Greek Symbol Definition English Metric   Value

 

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