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| General Constants |
The list presented below contains physical constants not specifically related to electricity or magnetism.
* : Reduced Planck constant,  = h/2π
Visit NIST for all constants, units, and uncertainties.
This is their Extensive Listing of constants
| Name | Symbol | Value | | Alpha Particle Mass | mα | 6.644 656 5 x 10-27 kg | | Alpha Particle Molar Mass | Mα | 4.001 506 179 149 x10-3 kg/mol | | Atomic Mass Unit | mu | 1.492 417 90 x 10-10 J
1.660 538 86 x 10-27 kg
7.513 006 608 x 1014 1/m
2.252 342 718 x 1023 Hz
1.080 952 7 x 1013 K | | Avogadro | N0 | 6.022 0 x 1023 molecules/mol | | Bohr Radius | a0 | 0.529 177 2108 x 10-10 m | | Boltzmann | k | 1.380 7 x 10-23 J/K | | Deuteron Mass | md | 3.343 583 35 x 10-27 kg | | Deuteron Molar Mass | Md | 2.013 553 212 70 x 10-3 kg/mol | | Electron Rest Mass | me | 9.109 382 6 x 10-31 kg | | Fine Structure | α | e2/4·π·ε0··c
7.297 352 568 x 10-3 | | Gravitational | G | 6.672 0 x 10-11 N·m2/kg2
3.449 0 x 10-8 lb·ft2/slug2 | | Fermi Coupling | GF/·c | 1.166 39 x 10-5 1/GeV2 | | Mass-Energy Ratio | c2 | 8.987 6 x 1016 J/kg | | Muon Magnetic Moment | | -4.490 447 99 x 10-26 J/T | | Muon Mass | mμ | 1.883 531 40 x x10-28 kg | | Muon Molar Mass | Mμ | 0.113 428 9264 x 10-3 kg/mol | | Planck* | h | 6.626 2 x 10-34 J·s | | Planck Length | lP | 1.616 24 x 10-35 m | | Planck Mass | mP | 2.176 45x 10-8 kg | | Planck Temperature | TP | 1.416 79 x 1032 K | | Planck Time | tP | 5.391 21 x 10-44 s | | Proton Rest Mass | mp | 1.672 621 71 x 10-27 kg | | Rydberg | R∞ | 10 973 731.568 525 1/m
3.289 841 960 360 x 1015 Hz
2.179 872 09 x 10-15 J
13.605 6923 eV | | Speed of Light (in vacuum) | c | 2.997 9 x 108 m/s | | Stefan Boltzmann | s | 5.670 3 x 10-8 W/(m2·K4) | | Tau Mass | mτ | 3.167 77 x 10-27 kg | | Tau Molar Mass | Mτ | 1.907 68 x 10-3 kg/mol | | Thomson Cross Section | σe | 0.665 245 873 x 10-28 m2 | | Unified Atomic Mass | | 1.660 538 86 x 10-27 kg | | Universal Gas | R | 8.314 4 J/(mol·K) | | Volume of Ideal Gas (@STP) | V | 2.241 4 x 10-2 m3/mol | | Weak Mixing Angle | θW | 0.222 15 rad | | Wien Displacement Law | | 2.897 7685 x 10-3 m·K |
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Kirt
