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"B" Formula SymbolsA - 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 | ||||||
|---|---|---|---|---|---|---|
| Symbol | Greek Symbol | Definition | English | Metric | SI | Value |
| Ba | - | Bagnold number | dimensionless | dimensionless | dimensionless | - |
| Ba | - | Barlow's formula | \large{\frac{lbf}{in^2}} | Pa | kg- m^{-1}-s^{-2} | - |
| b | - | base | - | - | - | - |
| \Delta | Delta | beam deflection, an increment | in | mm | mm | - |
| \Delta_{LL} | Delta | beam deflection due to live load | in | mm | mm | - |
| \Delta_{TL} | Delta | beam deflection due to total load | in | mm | mm | - |
| \Delta_{max} | Delta | beam deflection maximum calculated | in | mm | mm | - |
| \tau | tau | beam shear stress | \large{\frac{lbf}{in^2}} | Pa | kg- m^{-1}-s^{-2} | - |
| A_p | - | bearing area | in^2 or ft^2 | mm^2 or m^2 | mm^2 or m^2 | - |
| Be | - | Bejan number | dimensionless | - | ||
| b | - | belt width | in | mm | mm | - |
| BA | - | bend allowance | in | mm | mm | - |
| \theta | theta | bend angle | deg | rad | rad | - |
| BD | - | bend deduction | in | mm | mm | - |
| BM | - | bending momernt | \large{\frac{lbf}{sec}} | \large{\frac{kg-m}{s}} | kg - m - s^{-1} | - |
| \sigma_b | sigma | bending stress | \large{\frac{lbf}{in^2}} | Pa | kg- m^{-1}-s^{-2} | - |
| Be | - | Bernoulli's equation | \large{\frac{lbm}{ft^3}} | \large{\frac{kg}{m^3}} | kg - m^{-3} | - |
| Bm | - | Bingham number | dimensionless | dimensionless | dimensionless | - |
| k_b | - | binary rate coefficient | - | - | - | - |
| Bi | - | Biot number | dimensionless | dimensionless | dimensionless | - |
| Bl, \;B | - | Blake number | dimensionless | dimensionless | dimensionless | - |
| u_k | - | block wave function | - | - | - | - |
| Bo, \;Bd | - | Bodenstein number | dimensionless | dimensionless | dimensionless | - |
| \mu_b | mu | Bohr magneton | - | \large{ \frac{J}{T} } | J - T^{-1} | 9.274\;009\;994\;(57)\;x\;10^{-24} \large{ \frac{J}{T} } |
| a_o | Bohr radius | ft | m | m | 5.291\;772\;109 \;03\;x\;10^{-11} m | |
| k, \;k_b | - | Boltzmann constant | \large{ \frac{lbm-ft^2}{sec^2} } | \large{ \frac{kJ}{mol-K} } | kJ - mol^{-1} - K^{-1} | 1.380\;648\;52 \;x \;10^{-23} \large{ \frac{kJ}{mol-K} } |
| H | - | Boltzmann function | - | - | - | - |
| Bo | - | Bond number | dimensionless | dimensionless | dimensionless | - |
| \Delta E | Borda-Carnot equation | lbf-ft | J | kg - m^2 - s^{-2} | - | |
| BORE | - | bore | in | mm | mm | - |
| A | - | bore factor | - | - | - | |
| - | - | Boyles law | \large{\frac{lbf}{in^2}} | \large{\frac{N}{m^2}} | N - m^{-2} | - |
| \upsilon | upsilon | Bragg angle | - | - | - | - |
| b | - | brake dimension | in | mm | mm | - |
| BHP, \;HP_b | - | brake horsepower | \large{\frac{lbf-ft}{sec}} | \large{\frac{J}{s}} | J - s^{-1} | - |
| BkW | - | brake kilowatts | - | - | - | - |
| B_r | - | brake reaction distance | ft | m | m | - |
| t | - | brake reaction time | sec | s | s | - |
| BSFC | - | brake specific fuel consumption | \large{\frac{lbm}{hp-hr}} | \large{\frac{kg}{kW-h}} | kg - kW^{-1} - h^{-1} | - |
| B_d | - | braking distance | ft | m | m | - |
| B_d | - | Braking distance on grade | ft | m | m | - |
| BHN, \;HB | - | Brinell hardness number | \large{\frac{lbm}{in^2}} | \large{\frac{kg}{mm^2}} | kg - mm^{-2} | - |
| Br | - | Brinkman number | dimensionless | dimensionless | dimensionless | - |
| - | Brownell-Katz number | dimensionless | dimensionless | dimensionless | - | |
| k_{cr} | - | buckling coefficient | dimensionless | dimensionless | dimensionless | - |
| Y | - | bulk density | \large{ \frac{lbm}{ft^3} } | \large{ \frac{kg}{m^3} } | kg - m^{-3} | - |
| B, \;K | - | bulk modules | \large{\frac{lbm}{in^2}} | Pa | kg- m^{-1}-s^{-2} | - |
| B, \;K | - | bulk modules elasticity | \large{\frac{lbm}{in^2}} | Pa | kg- m^{-1}-s^{-2} | - |
| \theta | theta | bulk strain | \large{\frac{in}{in}} | \large{\frac{mm}{mm}} | mm - mm^{-1} | - |
| T_b, \;T_{\infty} | - | bulk temperature | F | C | x+273.15\;K | - |
| \gamma ' | gamma | bulk unit weight | \large{ \frac{lbm}{ft^3} } | \large{ \frac{N}{m^3} } | N - m^{-3} | - |
| B | - | buoyancy | lbf | N | kg - m - s^{-2} | - |
| B, \;F_b | - | buoyancy force | lbf | N | kg - m - s^{-2} | - |
| m_b | - | buoyancy mass | lbm | kg | kg | - |
| \gamma ' | gamma | buoyant unit weight | \large{ \frac{lbm}{ft^3} } | \large{ \frac{N}{m^3} } | N- m^{-3} | - |
| b | - | Burgers vector | - | - | - | - |
| p_b | - | burst pressure | \large{\frac{lbf}{in^2}} | Pa | kg- m^{-1}-s^{-2} | - |
| \sigma_{avg} | sigma | buttweld under axial and transverse loading | \large{\frac{lbf}{in^2}} | Pa | kg- m^{-1}-s^{-2} | - |
| BF | - | bypass factor | - | - | - | - |
| Symbol | Greek Symbol | Definition | English | Metric | SI | Value |
