Naturkonstanten in der Physik
| Plancksches Wirkungsquantum h | 6,6260755e-34 J s h / (2 pi) = 1.05457266e-34 J s |
| Boltzmannsche Konstante kB | 1,380658e-23 J/K |
| Elementarladung e | 1,60217733e-19 C |
| Avogadrosche Zahl NA | 6,0221367e23 particles/mol |
| Lichtgeschwindigkeit c | 2,99792458e8 m/s |
| Permeabilität des Vakuums mu0 | mu0 = 4pi e-7 T2 m3/J 12,566370614e-7 T2 m3/J |
| Dielektrizitätskonstante des Vakuums epsilon0 | epsilon0 = 1 /(mu0 c2) 8,854187817e-12 C2/J m |
| Feinstrukturkonstante 1 / alpha | 137,0359895 |
| Elektronenruhemasse me | 9,1093897e-31 kg |
| Protonenruhemasse mp | 1,6726231e-27 kg |
| Neutronenruhemasse mn | 1,6749286e-27 kg |
| Bohrsches Magneton muB | muB =e h / (4 pi me) 9,2740154e-24 J/T |
| Kernmagneton muN | muN =e h / (4 pi mp) 5,0507866e-27 J/T |
| atomare Energieeinheit Hartree | 1 Hartree =e2 / (4 pi epsilon0 a0) 1 Hartree = 2,625501e+06 J/mol (etwa 627,5 kcal/mol) |
| g-Faktor des freien Elektrons ge | 2,002319304386 |
| magnetisches Moment des Elektron s mue | mue = -(1/2)ge muB -9,2847701e-24 J/T |
| gyromagnetisches Verh. des freien Elektrons gammae | gammae =2 pi ge muB / h 1,7608592e11 1/s T gammae / (2 pi) = 28,024944 GHz/T |
| gyromagnetisches Verh. der Protonen in Wasser gammap | 2,67515255e8 1/s T gammap / (2 pi) = 42,576375 MHz/T |
| Proton magnetic moment/magn. Moment des Protons mup | 1,41060761e-26 J/T |
| Proton-Elektron-Verhältnisse | mp / me = 1836,152701 mue / mup = 658,2106881 gammae / gammap = 658,2275841 (protons in water) |
| Ladungs-Masse-Verhältnis des Elektrons e / me | 1,75880e11 C/kg |
| Einheit der Atommasse amu | 1,66057e-27 kg |
| Bohrscher Radius a0 | 5,29177e-11 m |
| Elektronenradius re | 2,81792e-15 m |
| Gaskonstante R | R =NA kB 8,31451 m2 kg/s2 K mol |
| Molvolumen Vmol | 22,41383 m3/kmol |
| Faradaysche Konstante F | F =NA e 9,64846e4 C/mol |
| g-Faktor des Protons gH | 5,585 |
| Compton-Wellenlänge des Elektrons lambdac | lambdac =h / (me c) 2,42631e-12 m |
| Erdbeschleunigung g | 9,80665 m/s2 |
| Gravitationskonstante G | 6,673 +/- 0,010)e-11 m3/kg s2 |
| Name | Symbol | Number | Exp | CGS Units | Relative Error (ppm) |
| speed of light in a vacuum | c | 2,99792458 | 10 | cm s-1 | exact |
| Planck constant | h | 6,6260755(40) | -27 | erg s | 0,60 |
hbar |
1,05457266(63) | -27 | erg s | 0,60 | |
| Gravitational constant | G | 6,67259(85) | -8 | cm3 g-1 s-2 | 128 |
| Electron charge | e | 4,8032068(14) | -10 | esu | 0,30 |
| Mass of electron | me | 9,1093897(54) | -28 | g | 0,59 |
| Mass of proton | mp | 1,6726231(10) | -24 | g | 0,59 |
| Mass of neutron | mn | 1,6749286(10) | -24 | g | 0,59 |
| Mass of hydrogen | mH | 1,6733 | -24 | g | ? |
| Atomic mass unit | amu | 1,6605402(10) | -24 | g | 0,59 |
| Avagadro's number | NA | 6,0221367(36) | 23 | 0,59 | |
| Boltzmann constant | k | 1,380658(12) | -16 | erg K -1 | 8,5 |
| Electron volt | eV | 1,6021772(50) | -12 | erg | ~0,60 |
| Radiation density constant | a | 7,5646 | -15 | erg cm-3 K-4 | ? |
| Stefan-Boltzmann constant | σ | 5,67051(19) | -5 | erg cm-2 K-4 s-1 | 34 |
| Fine structure constant | α | 7,29735308(33) | -3 | 0,045 | |
| Rydberg constant | R\inf | 2,1798741(13) | -11 | erg | 0,60 |