Formula Symbols - L
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L
| Symbol | Greek Symbol | Definition | US | Metric | Value |
|---|---|---|---|---|---|
| \(L\) | - | 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) | \(ft\) | \(m\) | - |
| \(G\) | - | leak rate | \(cfm\) | \(lpm\) | - |
| \(a\), \(\;L\), \(\;l\) | - | length | \(in \;or\; ft\) | \(mm \;or\; m\) | - |
| \(l_d\), \(\;\Delta l\) | delta | length differential | - | - | - |
| \(L\) | - | length of vertical curve | \(ft\) | \(m\) | - |
| \(\Gamma\) | 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 |
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