Formula Symbols - P

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

For other symbols see:  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

See Dimensionless Numbers, General Constants

SymbolGreek SymbolDefinitionUSMetric
\(R \;,\; r\) - particle position vector - -
\(Pe\) - Peclet number Dimensionless Number Dimensionless Number
\(P\) - perimeter \(ft\) \(m\)
\(T\) - period - -
\(T\) - periodic time - -
\(PF\) - performance factor - -
\(PN\) - performance number - -
\(\mu\) mu permeability  - -
\(\mu_o\) mu permeability of vacuum constant constant
\(\epsilon\) epsilon permittivity - \(F\;/\;m\)
\(\epsilon_o\) epsilon permittivity of vacuum constant constant
\(\gamma \) gamma photon - -
\(\pi\) pi Pi Dimensionless Number Dimensionless Number
\(Pl \;,\; h\) - Planck constant constant constant
\(Y\) - Planck function constant constant
\(l_p\) - Planck length constant constant
\(m_p\) - Planck mass constant constant
\(t_l\) - Planch time constant constant
\(\alpha \;,\; \beta \;,\; \gamma \;,\; \theta \;,\; \phi\) alpha , beta , gamma , theta , phi plane angle \(deg\) \(rad\)
\(p\) - plasma pressure - -
\(Z\) - plastic section modukus \(in^3\) \(mm^3\)
\(b\) - plate long side dimension \(ft\) \(m\)
\(a\) - plate short side dimension \(ft\) \(m\)
\(Po \;,\; \mu \;,\; \nu\) mu , nu Poisson's Ratio - -
\(J\) - polar area moment of inertia \(ft^4\) \(m^4\)
\(e\) - polarization vector - -
\(n\) - polytropic exponent - -
\(J\) - polar moment of inertia \(in^4\) \(m^4\)
\(P\) - porosity - -
\(x\) - position - -
\(x_d \;,\; \Delta x\) Delta position differential - -
\(U \;,\; V\) - potential difference - -
\(PE \;,\; E_p\) - potential energy - -
\( P\) - power \(ft-lbf\;/\;sec\) \(watt\)
\( pf\) - power factor Dimensionless Number Dimensionless Number
\(W\) - power jack load \(lbf\) \(N\)
\( N_p\) - Power number Dimensionless Number Dimensionless Number
\( PTR\) - power-to-heat ratio - -
\(Pr\) - Prandtl number Dimensionless Number Dimensionless Number
\(P \;,\; p\) - pressure \(lbf\;/\;ft^2\) \(Pa\)
\(\phi\) - pressure angle \(deg\) \(deg\)
\(C_p \;,\; \beta\) beta pressure coefficient Dimensionless Number Dimensionless Number
\(p_d \;,\; \Delta p\) Delta pressure differential \(lbf\;/\;ft^2\) \(Pa\)
\(x_T\) - pressure differential ratio factor \(lbf\;/\;ft^2\) \(Pa\)
\(F_L\) - pressure recovery factor - -
\(S\) - probability current density - -
\(P\) - probability density - -
\(\propto\) propto proportional to - -
\(p\) - proton - -
\(\eta\) eta pulley efficiency - -
\(\epsilon\) epsilon pulley loss factor - -