Formula Symbols - I
Nomenclature and Symbols Glossary
Algebra Symbols, Angle and Line Symbols, ASCII Characters, Basic Math Symbols, Bracket Symbols, Equivalence Symbols, Geometry Symbols, Greek Alphabet, HTML Colors, Miscellaneous Symbols, Roman Numerals, Set Symbols, Square Root Symbols
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
I
| Symbol | Greek Symbol | Definition | English | Metric | SI | Value |
|---|---|---|---|---|---|---|
| \(R\) | - | ideal gas constant | \(\large{ \frac{lbf-ft}{lbmol-R} }\) | \(\large{ \frac{J}{kmol-K} }\) | \(J-kmol^{-1} - K^{-1}\) | \(8.31446261815324\) \(\large{ \frac{J}{kmol-K} }\) |
| - | - | ideal gas law | \(\large{\frac{lbf}{in^2}}\) | \(Pa\) | \(kg- m^{-1}-s^{-2}\) | - |
| - | - | ideal gas law with compressibility factor | \(\large{\frac{lbf}{in^2}}\) | \(Pa\) | \(kg- m^{-1}-s^{-2}\) | - |
| \(lx\) | - | illuminance | - | - | - | - |
| \(b\) | - | impact parameter | - | - | - | - |
| \(Z_o\) | - | impedance of vacuum | \(\Omega\) | \(\Omega\) | \(kg-m^2-s^{-3}-A^{-2}\) | \(376.730\;313\;461...\) \(\Omega\) |
| \(d\), \(\;d_i\) | - | impeller diameter | \(in\) | \(mm\) | \(mm\) | - |
| \(I\) | - | impulse | \(lbf-sec\) | \(N-s\) | \(kg-m-s^{-1}\) | - |
| \(I\) | - | impulse velocity | \(lbf-sec\) | \(N-s\) | \(kg-m-s^{-1}\) | - |
| \(I\) | - | impulse with time | \(lbf-sec\) | \(N-s\) | \(kg-m-s^{-1}\) | - |
| \(H\), \(\;L\) | - | inductance | \(H\) | \(H\) | \(kg-m^2-s^{-2}-A^{-2}\) | - |
| \(X_L\) | - | inductive reactance | \(H\) | \(H\) | \(kg-m^2-s^{-2}-A^{-2}\) | - |
| \(I_a\) | - | initial abstraction | \(in\) | \(mm\) | \(mm\) | - |
| \(a_i\) | - | initial acceleration | \(\large{\frac{ft}{sec^2}}\) | \(\large{\frac{m}{s^2}}\) | \(m- s^{-2}\) | - |
| \(\omega_i\) | omega | initial angular velocity | \(\large{\frac{rad}{sec}}\) | \(\large{\frac{rad}{s}}\) | \(rad - s^{-1}\) | - |
| \(l_i\) | - | initial length | \(ft\) or \(in\) | \(m\) or \(mm\) | \(m\) or \(mm\) | - |
| \(d_1\) | - | initial maneuver distance | \(ft\) | \(m\) | \(m\) | - |
| \(x_i\) | - | initial position | - | - | - | - |
| \(T_i\) | - | initial temperature | \(F\) | \(C\) | \(x+273.15\;K\) | - |
| \(t_i\) | - | initial time | \(sec\) | \(s\) | \(s\) | - |
| \(v_i\) | - | initial velocity | \(\large{\frac{ft}{sec}}\) | \(\large{\frac{m}{s}}\) | \(m- s^{-1}\) | - |
| \(V_i\) | - | initial volume | \(ft^3\) or \(in^3\) | \(m^3\) or \(mm^3\) | \(m^3\) or \(mm^3\) | - |
| \(p_i\) | - | inlet pressure | \(\large{\frac{lbf}{in^2}}\) | \(Pa\) | \(kg- m^{-1}-s^{-2}\) | - |
| \(E_i\) | - | input energy | \(lbf-ft\) | \(J\) | \(kg - m^2 - s^{-2}\) | - |
| \(W_i\) | - | input work | \(lbf-ft\) | \(J\) | \(kg - m^2 - s^{-2}\) | - |
| \(ID\) | - | inside diameter | \(in\) | \(mm\) | \(mm\) | - |
| \(ID\) | - | inside diameter of pipe | \(in\) | \(mm\) | \(mm\) | - |
| \(D_b\) | - | inside diameter of valve body outlet | \(in\) | \(mm\) | \(mm\) | - |
| \(D_p\) | - | inside diameter of outlet pipe | \(in\) | \(mm\) | \(mm\) | - |
| \(a_i\) | - | instantaneous acceleration | \(\large{\frac{ft}{sec^2}}\) | \(\large{\frac{m}{s^2}}\) | \(m- s^{-2}\) | - |
| \(\alpha_i\) | alpha | instantaneous angular acceleration | \(\large{\frac{rad}{sec^2}}\) | \(\large{\frac{rad}{s^2}}\) | \(rad- s^{-2}\) | - |
| \(v_i\) | - | instantaneous velocity | \(\large{\frac{ft}{sec}}\) | \(\large{\frac{m}{s}}\) | \(m- s^{-1}\) | - |
| \(P\) | - | internal design pressure | \(\large{\frac{lbf}{in^2}}\) | \(Pa\) | \(kg- m^{-1}-s^{-2}\) | - |
| \(U\) | - | internal energy | \(Btu\) | \(J\) | \(kg - m^2 - s^{-2}\) | - |
| \(p_i\) | - | internal pressure | \(\large{\frac{lbf}{in^2}}\) | \(Pa\) | \(kg- m^{-1}-s^{-2}\) | - |
| \(r_i\) | - | internal radius | \(in\) | \(mm\) | \(mm\) | - |
| \(e\) | - | internal roughness | \(in\) | \(mm\) | \(mm\) | - |
| \(d\) | - | internal pipe diameter | \(in\) | \(mm\) | \(mm\) | - |
| \(ISD\) | - | intersection sight distance | \(ft\) | \(m\) | \(m\) | - |
| \(G_0^{-1}\) | - | inverse conductance quantum | \(\Omega\) | \(\Omega\) | \(kg-m^2-s^{-3}-A^{-2}\) | \(12\;906.403\;72\) \(\Omega\) |
| \(\alpha^{-1}\) | alpha | inverse fine structure constant | dimensionless | \(137.035\;999\;084\;(21)\) | ||
| \(Ir\), \(\;\xi\) | xi | Iribarren number | dimensionless | - | ||
| \(\alpha\) | alpha | isentropic compressibility | - | - | - | - |
| \(k\) | - | isentropic exponent | - | - | - | - |
| \(\beta\) | beta | isobaric compressibility | - | - | - | - |
| \(H\) | - | isobaric process - enthalpy | \(\large{\frac{Btu}{lbm}}\) | \(\large{\frac{kJ}{kg}}\) | \(kJ- kg^{-1}\) | - |
| \(S\) | - | isobaric process - entropy | \(\large{\frac{lbf-ft}{F}}\) | \(\large{\frac{J}{K}}\) | \(J- K^{-1}\) | - |
| \(\kappa\) | kappa | isothermal compressibility | - | - | - | - |
| 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
