Formula Symbols - F

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

Mathematics Symbols

 

Mathematics Terms

 

                                                             Formula Symbols

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

F

SymbolGreek SymbolDefinitionEnglishMetricSIValue
\(K\) - factor - - - -
\(FS\), \(\;FOS\) - factor of safety dimensionless  -
\(F\), \(\;T_F\) - Fahrenheit \(F\) -  - -
\(\eta_f\) eta fan efficiency dimensionless -
\(FHP\), \(\;HP_f\) - fan horsepower \(\large{\frac{lbf-ft}{sec}}\) \(\large{\frac{Btu}{s}}\) \(Btu-s^{-1}\)  -
\(n\) - fan speed \(\large{\frac{ft}{sec}}\) \(\large{\frac{m}{s}}\) \(m-s^{-1}\)  -
\(f\) - Fanning friction factor dimensionless  -
\(Fa\) - Faraday constant - \(\large{\frac{C}{mol}}\) \(C-mol^{-1}\)  \(96\;485.332\;12...\) \(\large{\frac{C}{mol^{-1}}}\)
- - Faraday's law of induction - - - -
\(k_f\) - Fermi angular wavevector - - -  -
\(G_f\) - Fermi coupling constant \(\large{\frac{lbf-ft}{ft^3}}\) \(\large{\frac{J}{m^3}}\) \(J-m^{-3}\) \(1.435\;x\;10^{-36}\) \(J-m^{-3}\)
\(E_f\) - Fermi energy \(lbf-ft\) \(J\) \(kg-m^2-s^{-2}\)  -
\(f_f\) - Fermi force \(lbf\) \(N\) \(kg-m-s^{-2}\) -
\(p_f\) - Fermi momentum \(\large{\frac{lbm-ft}{sec}}\) \(\large{\frac{kg-m}{s}}\) \(kg-m-s^{-1}\) -
\(r_f\) - Fermi repulsion - - - -
\(v_f\) - Fermi velocity \(\large{\frac{ft}{sec}}\) \(\large{\frac{m}{s}}\) \(m-s^{-1}\) -
\(h\) - film coefficient \(\large{\frac{Btu}{ft^2-hr-F}}\) \(\large{\frac{W}{m^2-K}}\) \(W-m^{-2}-K^{-1}\)  -
\(h\) - film thickness \(in\) \(mm\) \(mm\)   -
\(a_f\) - final acceleration \(\large{\frac{ft}{sec^2}}\) \(\large{\frac{m}{s^2}}\) \(m-s^{-2}\)  -
\(\omega_f\) omega final angular velocity \(\large{\frac{rad}{sec}}\) \(\large{\frac{rad}{s}}\) \(rad-s^{-1}\)  -
\(l_f\) - final length \(ft\) or \(in\) \(m\) or \(mm\) \(m\) or \(mm\)   -
\(x_f\) - final position \(ft\) or \(in\) \(m\) or \(mm\) \(m\) or \(mm\)   -
\(T_f\) - final temperature \(F\) \(C\) \(x+273.15\;K\)  -
\(t_f\) - final time \(sec\) \(s\) \(s\)   -
\(v_f\) - final velocity \(\large{\frac{ft}{sec}}\) \(\large{\frac{m}{s}}\) \(m-s^{-1}\)  -
\(V_f\) - final volume \(ft^3\) or \(in^3\) \(m^3\) or \(mm^3\)  \(m^3\) or \(mm^3\)  -
\(\alpha\) alpha fine structure constant dimensionless constant \(7.297\;352\;5693\;x\;10^{-3}\)
\(\Delta U\) - first law of thermodynamics  - - - -
\(Q\) - first moment of area \(in^4\) \(mm^4\) \(mm^4\)  -
\(c_1\) - first radiation constant - \(\large{\frac{W}{m^2}}\) \(W-m^{-2}\)  \(3.741\;771\;852...\;x\;10^{-16}\) \(\large{\frac{W}{m^2}}\)
\(t_f\) - flange thickness \(in\) \(mm\) \(mm\)   
\(FS\) - flash steam \(\large{\frac{lbf}{in^2}}\) \(\large{\frac{kg}{mm^2}}\) \(kg-mm^{-2}\)   -
\(T\) - flight time \(hr\) \(hr\) -  -
\(q\) - flow \(\large{\frac{ft^3}{sec}}\) \(\large{\frac{m^3}{s}}\) \(m^3-s^{-1}\)  -
\(C_v\), \(\;K_v\) - flow coefficient dimensionless  -
\(Q\) - flow rate \(\large{\frac{ft^3}{sec}}\) \(\large{\frac{m^3}{s}}\) \(m^3-s^{-1}\)  -
\(Q\) - flow rate capacity \(\large{\frac{ft^3}{sec}}\) \(\large{\frac{m^3}{s}}\) \(m^3-s^{-1}\)  -
\(Q_a\) - flow rate of air \(\large{\frac{ft^3}{sec}}\) \(\large{\frac{m^3}{s}}\) \(m^3-s^{-1}\)  -
\(Q_s\) - flow rate of steam \(\large{\frac{ft^3}{sec}}\) \(\large{\frac{m^3}{s}}\) \(m^3-s^{-1}\)  -
\(Q_w\) - flow rate of water \(\large{\frac{ft^3}{sec}}\) \(\large{\frac{m^3}{s}}\) \(m^3-s^{-1}\)  -
\(Q\), \(\;V\) - flow velocity \(\large{\frac{ft}{sec}}\) \(\large{\frac{m}{s}}\) \(m-s^{-1}\)  -
\(P_c\) - fluid critical pressure \(\large{\frac{lbf}{in^2}}\) \(Pa\) \(kg-m^{-1}-s^{-2}\)   -
\(\rho_f\) rho fluid density \(\large{\frac{lbm}{ft^3}}\) \(\large{\frac{kg}{m^3}}\) \(kg-m^{-3}\)  -
\(p\) - fluid pressure at depth \(\large{\frac{lbf}{in^2}}\) \(Pa\) \(kg-m^{-1}-s^{-2}\)  -
\(h\) - fluid head \(ft\) \(m\) \(m\)  -
\(\Delta E\) - fluid mehanical energy loss \(lbf-ft\) \(J\) \(kg-m^2-s^{-2}\)   -
\(p\) - fluid pressure \(\large{\frac{lbf}{in^2}}\) \(Pa\) \(kg-m^{-1}-s^{-2}\)  -
\(p\) - fluid pressure at depth \(\large{\frac{lbf}{in^2}}\) \(Pa\) \(kg-m^{-1}-s^{-2}\)   
\(\xi\) xi fluid resistance coefficient dimensionless  -
\(P_v\) - fluid vapor pressure \(\large{\frac{lbf}{in^2}}\) \(Pa\) \(kg-m^{-1}-s^{-2}\)   -
\(v\) - fluid velocity \(\large{\frac{ft}{sec}}\) \(\large{\frac{m}{s}}\) \(m-s^{-1}\)  -
\(\Delta v_f\) - fluid velocity change \(\large{\frac{ft}{sec}}\) \(\large{\frac{m}{s}}\) \(m-s^{-1}\)  -
\( F\) - force \(lbf\) \(N\) \(kg-m-s^{-2}\)   -
\(F_d\), \(\;\Delta F\) delta force differential \(lbf\) \(N\) \(kg-m-s^{-2}\)   -
\(F\) - force exerted by contracting or stretching a material \(lbf\) \(N\)  \(kg-m-s^{-2}\) -
\(F_a\) - force of air resistance or drag \(lbf\) \(N\) \(kg-m-s^{-2}\)   -
\(P\) - force of impression \(lbf\) \(N\) \(kg-m-s^{-2}\)   -
\(F\) - formality - - -  -
\(FW\) - formula weight \(lbf\) \(N\) \(kg-m-s^{-2}\)   -
\(Fo\) - Fourier number dimensionless  -
\(g\) - Fourier's law - - - -
\(x\) - fraction - - -  -
\(M\) - fraction moisture dimensionless -
\(d_{\infty}\)  - free steam density \(\large{\frac{lbm}{ft^3}}\) \(\large{\frac{kg}{m^3}}\)  \(kg-m^{-3}\)  -
\(\rho_{\infty}\) rho  free steam pressure \(\large{\frac{lbf}{in^2}}\) \(Pa\) \(kg-m^{-1}-s^{-2}\)  -
\(v_{\infty}\)  - free steam velocity \(\large{\frac{ft}{sec}}\) \(\large{\frac{m}{s}}\) \(m-s^{-1}\)  -
\(F\) - Fresnel number dimensionless  -
\(f\), \(\;\nu\) nu frequency \(Hz\) \(Hz\)  \(s^{-1}\)   -
\(Q\) - fresh air introduction rate - - - -
\(f\) - friction \(lbf\) \(N\) \(kg-m-s^{-2}\)  -
\(\mu\) mu friction coefficient dimensionless  -
\(h_fd\)   friction discharge head \(ft\) \(m\) \(m\)  -
\(f\) - friction factor dimensionless  -
\(F_f\) - friction force - - -  -
\( FHP\) - friction horsepower \(hp\) \(hp\) \(watt\)  -
\(FL\) - friction loss \(lbf\) \(N\) \(kg-m-s^{-2}\) -
\(\xi\), \(\;C\) xi friction loss coefficient dimensionless -
\( FP\) - friction pressure - - -  -
\(f\) - fraction split dimensionless -
\(h_{fs}\)   friction suction head - - -  -
\(RA\) - fractional reduction in area \(ft^2\) or \(in^2\) \(m^2\) or \(mm^2\)  \(m^2\) or \(mm^2\)  -
\(F\) - Fresnel number dimensionless  -
\(Fo\) - Fourier number dimensionless  -
\(Fr\) - Froude number dimensionless  -
\(FAR\) - fuel-air ratio - - -  -
\(s'\) - fuel economy \(\large{\frac{mi}{gal}}\) \(\large{\frac{km}{L}}\) \(km-L^{-1}\)  -
\(m_f\) - fuel mixture - - -  -
\(FU\) - fuel utilization - - -  -
\(f\) - function - - -  -
Symbol Greek Symbol Definition English Metric   Value

 

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