Formula Symbols - B
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B
| Symbol | Greek Symbol | Definition | US | Metric | Value |
|---|---|---|---|---|---|
| \(BWR\) | - | back work ratio | - | - | - |
| \(Ba\) | - | Bagnold number | dimensionless | dimensionless | - |
| \(Ba\) | - | Barlow's formula | \(lb \;/\; in^2 \;or\; psi\) | \(Pa\) | - |
| \(b\) | - | base | - | - | - |
| \(\Delta\) | Delta | beam deflection, an increment | \(in\) | \(mm\) | - |
| \(\Delta_{LL}\) | Delta | beam deflection due to live load | \(in\) | \(mm\) | - |
| \(\Delta_{TL}\) | Delta | beam deflection due to total load | \(in\) | \(mm\) | - |
| \(\Delta_{max}\) | Delta | beam deflection maximum calculated | \(in\) | \(mm\) | - |
| \(A_p\) | - | bearing area | \(in^2 \;or\; ft^2\) | \(mm^2 \;or\; m^2\) | - |
| \(Be\) | - | Bejan number | dimensionless | dimensionless | - |
| \(b\) | - | belt width | \(in\) | \(mm\) | - |
| \(BA\) | - | bend allowance | \(in\) | \(mm\) | |
| \(\theta\) | theta | bend angle | \(deg\) | \(rad\) | - |
| \(\sigma_b\) | sigma | bending stress | \(lb\;/\;in^2 \;or\; psi\) | \(Pa\) | - |
| \(Be\) | - | Bernoulli's equation | - | - | - |
| \(Bm\) | - | Bingham number | dimensionless | dimensionless | - |
| \(k_b\) | - | binary rate coefficient | - | - | - |
| \(Bi\) | - | Biot number | dimensionless | dimensionless | - |
| \(Bl\), \(\;B\) | - | Blake number | dimensionless | dimensionless | - |
| \(y\) | - | bleed fraction | - | - | - |
| \(u_k\) | - | Block wave function | - | - | - |
| \(Bo\), \(\;Bd\) | - | Bodenstein number | dimensionless | dimensionless | - |
| \(\mu_b\) | mu | Bohr magneton | constant | constant | \(9.274\; 010 \;0783\;x\; 10^{-24}\; J\;T^{-1}\) |
| \(a_o\) | Bohr radius | constant | constant | \(5.291\; 772\; 109 \;03\;x\; 10^{-11}\; m\) | |
| \(k\), \(\;k_b\) | - | Boltzmann constant | constant | constant | \(1.38064852 \;x \;10^{-23}\; J\;K^{-1}\) |
| \(H\) | - | Boltzmann function | - | - | - |
| \(Bo\) | - | Bond number | dimensionless | dimensionless | - |
| \(\Delta E\) | Borda-Carnot equation | \(lbf\;/\;ft^2\) | \(Pa\) | - | |
| \(BORE\) | - | bore | \(in\) | \(mm\) | - |
| \(A\) | - | bore factor | \(in^2\) | - | - |
| \(\upsilon\) | upsilon | Bragg angle | - | - | - |
| \(b\) | - | brake dimension | \(in\) | \(m\) | - |
| \(BHP\), \(\;HP_b\) | - | brake horsepower | \(hp\) | - | - |
| \(BkW\) | - | brake kilowatts | - | \(kW\) | - |
| \(t\) | - | brake reaction time | \(s\) | \(s\) | - |
| \(B_d\) | - | braking distance | \(ft\) | \(m\) | - |
| \(BFSC\) | - | brake specific fuel consumption | \(lbm \;/\; hp-hr\) | \(kg \;/\; kW-h\) | - |
| \(BWR\) | - | brake work ratio | - | - | - |
| \(b\) | - | breadth | - | - | - |
| \(BHN\), \(\;HB\) | - | Brinell hardness number | - | - | - |
| \(Br\) | - | Brinkman number | dimensionless | dimensionless | - |
| - | Brownell-Katz number | dimensionless | dimensionless | - | |
| \(k_{cr}\) | - | buckling coefficient | dimensionless | dimensionless | - |
| \(Y\) | - | bulk density | \(lb/gal\) | \(g/mL\) | - |
| \(B\), \(\;K\) | - | bulk modules | \(lb \;/\; in^2 \;or\; psi\) | \(Pa\) | - |
| \(B\), \(\;K\) | - | bulk modules elasticity | \(lb \;/\; in^2 \;or\; psi\) | \(Pa\) | - |
| \(\theta\) | theta | bulk strain | - | - | - |
| \(T_b\), \(\;T_{\infty}\) | - | bulk temperature | \(^\circ F\) | \(C\) | - |
| \(B\) | - | buoyancy | \(lbf\) | \(N\) | - |
| \(B\), \(\;F_b\) | - | buoyancy force | \(lbf\) | \(N\) | - |
| \(m_b\) | - | buoyancy mass | - | - | - |
| \(b\) | - | Burgers vector | - | - | - |
| \(p_b\) | - | burst pressure | \(lb \;/\; in^2 \;or\; psi\) | \(Pa\) | - |
| \(BF\) | - | bypass factor | - | - | - |
| Symbol | Greek Symbol | Definition | US | Metric | Value |
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