| Symbol | Greek Symbol | Definition | US | Metric | Value |
|---|
| \(W\) |
- |
Wahl correction factor |
- |
- |
- |
| \(f\) |
- |
Wallis parameter |
dimensionless |
dimensionless |
- |
| \(w\) |
- |
water content |
\(in^3 \;or\; ft^3\) |
\(mm^3 \;or\; m^3\) |
- |
| \(Q_w\) |
- |
water flow rate |
\(ft^3 \;/\; sec\) |
\(m^3 \;/\; s\) |
- |
| \(q\) |
- |
water flow rate increment |
\(gpm\) |
\(L \;/\; s\) |
- |
| \( WHP\) |
- |
water horsepower |
\(hp\) |
- |
- |
| \(WkW\) |
- |
water kilowatts |
- |
\(kW\) |
- |
| \(WS\) |
- |
water surface |
- |
- |
- |
| \(v_w\) |
- |
water velocity |
\(ft\;/\;sec\) |
\(m\;/\;s\) |
- |
| \( P\) |
- |
watt |
\(Watt\) |
\(Watt\) |
- |
| \(H\) |
- |
wave height |
\(ft\) |
\(m\) |
- |
| \(\lambda\) |
lambda |
wavelength |
\(ft\) |
\(m\) |
- |
| \(\lambda_l\) |
lambda |
wavelength (longitudinal) |
constant |
constant |
\(2.835967539\;x\;10^{-17}\;m\) |
| \(\Psi\) |
Psi |
wave function |
- |
- |
- |
| \(\sigma^1\) |
sigma |
wave number |
- |
- |
- |
| \(\sigma\) |
sigma |
wave vector |
- |
- |
- |
| \(\lambda\) |
lambda |
wave velocity |
\(ft \;/\; sec\) |
\(m \;/\; s\) |
- |
| \(A_{web}\) |
- |
web area in a steel beam equal to the depth x web thickness |
\(in^2 \;or\; ft^2\) |
\(mm^2 \;or\; m^2\) |
- |
| \(t_w\) |
- |
web thickness |
\(in\) |
\(mm\) |
- |
| \(We\) |
- |
Weber number |
dimensionless |
dimensionless |
- |
| \(G\), \(\;P\), \(\;W\) |
- |
weight |
\(lbf\) |
\(N\) |
- |
| \(W_{\rho}\) |
rho |
weight density |
\(lb\;/\;ft^3\) |
\(kg\;/\;m^3\) |
- |
| \(W_a\) |
- |
weight of air |
- |
- |
- |
| \(W_b\) |
- |
weight of body |
\(lbf\) |
\(N\) |
- |
| \(\gamma\) |
gamma |
weight of fluid |
\(lbf\) |
\(N\) |
- |
| \(W_{im}\) |
- |
weight of immersed body |
\(lbf\) |
\(N\) |
- |
| \(W_s\) |
- |
weight of soil |
\(lbf\) |
\(N\) |
- |
| \(W_s\) |
- |
weight of solid |
\(lbf\) |
\(N\) |
- |
| \(W_w\) |
- |
weight of water |
\(lbf\) |
\(N\) |
- |
| \(\theta_w\) |
theda |
Weinberg angle |
dimensionless constant |
dimensionless constant |
\(0.22290\) |
| \(Wi\) |
- |
Weissenberg number |
dimensionless |
dimensionless |
- |
| \(A\) |
- |
weld current |
- |
- |
- |
| \(W\) |
- |
weld size |
\(in\) |
\(mm\) |
- |
| \(s\) |
- |
weld speed |
\(in/min\) |
\(mm/min\) |
- |
| \(A_{throat}\) |
- |
weld, area cross the throat of the weld |
\(in^2 \;or\; ft^2\) |
\(mm^2 \;or\; m^2\) |
- |
| \(\rho_{wb}\) |
rho |
wet bulk density of soil |
\(lb/gal\) |
\(g/mL\) |
- |
| \(C_M\) |
- |
wet service factor for wood design |
- |
- |
- |
| \(P_w\) |
- |
wetted perimeter |
\(ft\) |
\(m\) |
- |
| \(M\) |
- |
whole number |
- |
- |
- |
| \(w\) |
- |
width |
\(ft\) |
\(m\) |
- |
| \(b\) |
|
width, often cross-section |
\(in \;or\; ft\) |
\(mm \;or\; m\) |
- |
| \(b_f\) |
- |
width of the flange of a steel beam cross-section |
\(in\) |
\(mm\) |
- |
| \(b_{entropy}\) |
- |
Wien entropy displacement law constant |
constant |
constant |
\(3.002\;916\;077...\;x\;10^{-3}\;m\;K\) |
| \(b'\) |
- |
Wien frequency displacement law constant |
constant |
constant |
\(5.878\;925\;757...\;x\;10^{10}\;Hz\;K^{-1}\) |
| \(b\) |
- |
Wien wavelength displacement law constant |
constant |
constant |
\(2.897\;771\;955...\;x\;10^{-3}\;m\;K\) |
| \(T_{wc}\) |
- |
wind chill factor |
\(^\circ F\) |
\(C\) |
- |
| \(\alpha\) |
alpha |
Womersley number |
dimensionless |
dimensionless |
- |
| \(W\) |
- |
work |
\(ft-lbf\) |
\(J\) |
- |
| \(W\) |
- |
work |
\(Btu\) |
\(kJ\) |
- |
| \(W\) |
- |
work |
\(HP-hr\) |
\(MJ\) |
- |
| \(W\) |
- |
work done on a system |
\(ft-lbf\) |
\(kW\) |
- |
| \(\phi\) |
phi |
work function |
- |
- |
- |
| \(W\) |
- |
work per unit mass |
\(Btu/lbm\) |
\(kJ/kg\) |
- |
| Symbol |
Greek Symbol |
Definition |
US |
Metric |
Value |
