# Formula Symbols - C

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

## Formula Symbols

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## C

SymbolGreek SymbolDefinitionUSMetricValue
$$Z$$ - canonical partition function - - -
$$C$$ - capacitance - -  -
$$Q$$, $$\;V$$ - capacity $$in^3$$ $$L$$  -
$$Ca$$ - Capillary number dimensionless dimensionless  -
$$F$$   casing quality factor dimensionless dimensionless -
$$A$$, $$\;L_d$$   characteristic diffusion length - -  -
$$Ca$$ - Cauchy number dimensionless dimensionless  -
$$K$$ - cavitation - -  -
$$K_c$$ - cavitation index - -  -
$$Ca$$, $$\;\sigma$$ sigma Cavitation number dimensionless dimensionless  -
$$c$$ - cement content of concrete $$lb\;/\;yd^3$$ $$kg\;/\;m^3$$ -
$$Q_c$$ - cement quantity - - -
$$r_c$$ - cement ratio - - -
$$Ce$$ - Centrifuge number dimensionless dimensionless  -
$$a_c$$ - centripetal acceleration $$ft\;/\;sec$$ $$m\;/\;s$$  -
$$F_c$$ - centripetal force $$lbf$$ $$N$$  -
$$Q$$ - Chandrasekhar number dimensionless dimensionless  -
$$C$$, $$\;\Delta$$ Delta change - -  -
$$\rho$$ rho change density - -  -
$$\rho$$ rho change density of electrons - -  -
$$\Delta \omega$$ omega change in angular velocity $$ft \;/\; sec$$ $$m \;/\; s$$  -
$$\Delta v$$ - change in fluid velocity $$ft \;/\; sec$$ $$m \;/\; s$$  -
$$l_c$$ - change in length $$ft \;or\; in$$ $$m \;or\; mm$$  -
$$z$$ - change number of an ion - -  -
change / quantum ratio constant constant $$2.417\;989\;348\;x\;10^{14}\;kg^{-1}\;m^{-2}\;s^2\;A$$
$$\Omega$$ Omega characteristic angular velocity - -  -
$$\Delta x$$ Delta characteristic difference of mole fraction - -  -
$$f$$ - characteristic frequency - -  -
$$Z_0$$ mu characteristic impedance of vacuum constant constant $$376.730\;313\;668\;\Omega$$
$$l$$, $$\;l_c$$ - characteristic length $$in \;or\; ft$$ $$mm \;or\; m$$  -
$$v$$ - characteristic speed - -  -
$$\Theta$$ Theta characteristic temperature - -  -
$$\Delta T$$ Delta characteristic temperature difference - -  -
$$\Delta t$$ Delta characteristic time interval - -  -
$$U$$ - characteristic velocity $$ft/sec$$ $$m/s$$  -
$$q$$ - charge of particle - -  -
$$\mu$$ mu chemical potential - -  -
$$C$$ - Chezy coefficient - -  -
$$Ch$$ - Chezy formula - $$m^{1/2}/s$$  -
$$c$$ - chord length $$in \;or\; ft$$ $$mm \;or\; m$$  -
$$\omega$$ omega circular frequency - -  -
$$\Gamma$$ Gamma circulation $$ft^2\;/\;sec$$ $$m^2\;/\;s$$  -
$$C$$ - circumference $$ft$$ $$m$$  -
$$r_e$$ - classical electron radius constant constant $$2.817\;940\;3262\;x\;10^{-15}\;m$$
$$c$$ - clearance $$in$$ $$m$$  -
$$d_3$$ - clearance length $$ft$$ $$m$$ -
$$Q_{co}$$ - coarse quantity (gravel  & rock) - - -
$$r_{co}$$ - coarse ratio (gravel  & rock) - - -
$$C$$ - coefficient - -  -
$$\gamma$$ gamma coefficient of area thermal expansion $$1 \;/\; ^\circ F$$ $$1 \;/\; ^\circ C$$  -
$$K_c$$ - coefficient of constant cavitation dimensionless number dimensionless number  -
$$\mu$$, $$\;C_d$$ mu coefficient of discharge - -  -
$$f$$ - coefficient of friction dimensionless dimensionless  -
$$\alpha_t$$ alpha coefficient of linear thermal expansion $$in$$ $$mm$$  -
$$e$$ - coefficient of restitution - -  -
$$a$$ - coefficient of rolling resistance $$ft$$ $$m$$  -
$$\alpha$$, $$\;\alpha_c$$ alpha coefficient of thermal expansion $$1 \;/\; ^\circ K$$ $$1 \;/\; ^\circ K$$ -
$$C$$ - coefficient of viscous damping $$lbf-sec^2 \;/\; ft^2$$ $$N \cdot s^2 \;/\; m^2$$  -
$$\eta$$ eta coeficient of viscosity $$lbf-sec \;/\; ft^2$$ $$Pa-s$$  -
$$\alpha_v$$ alpha coefficient of volumetric thermal expansion $$ft^3$$ $$m^3$$  -
$$\xi$$ xi coherence depth - -  -
$$Coh$$ - cohesion number dimensionless dimensionless  -
$$v_c$$ - collision frequency - -  -
-  - Colburn J factors dimensionless dimensionless  -
$$k_e$$ - Coulombo's constant constant constant -
$$CCV$$ - combustion chamber volume $$in^3$$ $$cc^3$$  -
$$Psi*$$ Psi complex conjugate - -  -
$$\eta^*$$ eta complex viscosity - -  -
$$k$$, $$\;k_t$$, $$\;\beta$$ beta compressibility $${ft}^2\;/\;lbf$$ $$Pa^{-1}$$  -
$$Z$$ - compressibility factor dimensionless dimensionless  -
$$Z_i$$ - compressibility factor at inlet - -  -
$$Z_o$$ - compressibility factor at outlet - -  -
$$K$$ - compression - -  -
$$CCV$$ - compression chanber volume $$in^3$$ $$cc^3$$  -
$$CR$$ - compression ratio $$in^3$$ $$cc^3$$   -
$$\lambda_c$$ lambda Compton wavelength - -  -
$$CFD$$ - computational fluid dynamics - -  -
$$C$$ - concentration $$ppm$$ $$mg\;/\;L$$  -
$$C$$ - concentration of htdrocarbon in air - - -
$$f_cm$$ - concrete mean compressive cylinder strength $$lb\;/\;in^2 \;or\; psi$$ $$Pa$$ -
$$f_cm28$$ - concrete mean compressive cylinder strength at 28 days $$lb\;/\;in^2 \;or\; psi$$ $$Pa$$ -
$$f_cmt$$ - concrete mean compressive cylinder strength at age t $$lb\;/\;in^2 \;or\; psi$$ $$Pa$$ -
$$f_cmtc$$ - concrete mean compressive cylinder strength when drying starts at age t_c $$lb\;/\;in^2 \;or\; psi$$ $$Pa$$ -
$$f_cmto$$ - concrete mean compressive cylinder strength when loading starts at age t_o $$lb\;/\;in^2 \;or\; psi$$ $$Pa$$ -
$$f_{c}{'}$$ - concrete specific cylinder strength at 28 days $$lb\;/\;in^2 \;or\; psi$$ $$Pa$$ -
$$m_c$$ - condensate load $$lb\;/\;hr$$ $$kg\;/\;h$$  -
$$G$$ - conductance - -  -
$$G_0$$ - conductance quantum constant constant $$7.748\;091\;7346\;x\;10^{-5}\;kg^{-1}\;m^{-2}\;s^3\;A^2$$
$$\gamma$$, $$\;\sigma$$ gamma, sigma conductivity - -  -
$$c$$ - consentration - -  -
$$CP$$ - conservation management and land cover practices - - -
$$k$$ - constant - -  -
$$a_c$$ - constant acceleration $$ft\;/\;sec^2$$ $$m\;/\;s^2$$  -
$$\omega_f$$ omega constant angular acceleration $$ft\;/\;sec$$ $$m\;/\;s$$  -
$$c_p$$, $$\;p$$ - constant pressure $$lb\;/\;in^2 \;or\; psi$$ $$Pa$$  -
$$v$$ - constant volume $$in^3 \;or\; ft^3$$ $$mm^3 \;or\; m^3$$  -
$$\beta$$ beta contact angle $$deg$$ $$deg$$  -
$$C_v$$ - control valve - -  -
$$h$$, $$\;h_c$$ - convective heat transfer coefficient $$Btu \;/\; hr-ft^2-^\circ F$$ $$W \;/\; m^2-K$$  -
$$k$$ - conversion factor of the unit system - -  -
$$k$$ - conveyance $$ft^3\;/\;sec$$ $$m^3\;/\;s$$ -
$$T_c$$ - cooler temperature $$Btu\;/\;lbm$$ $$kJ\;/\;kg$$  -
$$CCD$$ - cooling degree days $$^\circ F-day$$ $$^\circ C-day$$  -
$$CLF$$ - cooling load factor - -  -
$$CLTD$$ - cooling load temperature difference $$^\circ F$$ $$^\circ C$$  -
$$f$$ - Coriolis frequency $$1 \;/\; sec$$ $$1 \;/\; s$$  -
$$C$$, $$\;\alpha$$, $$\;K$$ alpha correction factor - -  -
$$C$$ - corrosion allowance $$in$$ $$cm$$  -
$$C$$ - cost - -  -
$$k$$, $$\;k_e$$ - Coulomb's constant constant constant $$8\;987\;551\;788.7\;N\;m^2\;C^{-2}$$
$$F$$ - Coulomb's law - -  -
$$k$$, $$\;k_e$$ - Coulmbo's wave constant constant constant -
$$k$$ - coupling coefficient - -  -
$$Co$$ - Courant Number dimensionless dimensionless  -
$$Co$$ - Cowling number dimensionless dimensionless  -
$$B$$ - crack coefficient $$ft^3\;/\;ft-hr$$ $$m^2\;/\;m-h$$  -
$$\epsilon$$ epsilon creep $$in\;/\;in$$ $$m\;/\;m$$  -
$$p_c$$ - critical pressure $$lb\;/\;in^2 \;or\; psi$$ $$Pa$$  -
$$F_F$$ - critical pressure ratio factor - -  -
$$T_c$$ - critical temperature $$^\circ F$$ $$^\circ C$$  -
$$\sigma$$ sigma cross-section $$in^2$$ $$mm^2$$  -
$$A_f$$ - cross-section area of flange $$in^2$$ $$mm^2$$  -
$$A_g$$ - cross-section area of grout $$in^2$$ $$mm^2$$  -
$$A_w$$ - cross-section area of web $$in^2$$ $$mm^2$$  -
$$\alpha_v$$, $$\;\gamma$$ alpha, gamma cubic expansion coefficient - -  -
$$CFM$$ - cubic feet per minute $$ft^3 \;/\; min$$ $$m^3 \;/\; m$$  -
$$CID$$ - cubic inch displacement $$in^3$$ $$cc^3$$  -
$$T_c$$ - Curie temperature - -  -
$$I$$ - current $$amp$$ $$amp$$  -
$$j$$ - current density of electrons  - -  -
$$v$$ - cutting speed $$ft\;/\;min$$ $$m\;/\;s$$  -
Symbol Greek Symbol Definition US Metric Value

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