Bohr magneton in eV/T
ElectromagneticMeasured
= 5.788 381 7982(18) × 10−5 eV T−1
- Value
- 5.788 381 7982 × 10−5 eV T−1
- Standard uncertainty
- 1.8 × 10−14 eV T−1
- Relative uncertainty
- 3.1 × 10−10 (311 parts per trillion)
- Status
- Measured
- Symbol
- Source
- CODATA 2022 via NIST · NIST entry
Use in a calculation
Plain
LaTeX
Python
# Bohr magneton in eV/T, CODATA 2022 (NIST)
bohr_magneton_in_ev_t = 5.7883817982e-5 # eV T^-1, standard uncertainty 1.8e-14
# SciPy: scipy.constants.physical_constants['Bohr magneton in eV/T']What it is
The Bohr magneton expressed in electronvolts per tesla.
How the value changed, 1998–2022
Each point is one CODATA adjustment, plotted as its difference from the 2022 value; the bars show one standard uncertainty (an arrowhead means the bar runs off the chart).
Relative uncertainty
| CODATA | Value (uncertainty) | Relative uncertainty | Change from previous |
|---|---|---|---|
| 2022 | 5.788 381 7982(18) × 10−5 | 3.1 × 10−10 | −4.6 σ of 2018 |
| 2018 | 5.788 381 8060(17) × 10−5 | 2.9 × 10−10 | +1.8 σ of 2014 |
| 2014 | 5.788 381 8012(26) × 10−5 | 4.5 × 10−10 | −1.4 σ of 2010 |
| 2010 | 5.788 381 8066(38) × 10−5 | 6.6 × 10−10 | +6.5 σ of 2006 |
| 2006 | 5.788 381 7555(79) × 10−5 | 1.4 × 10−9 | −1.2 σ of 2002 |
| 2002 | 5.788 381 804(39) × 10−5 | 6.7 × 10−9 | +1.3 σ of 1998 |
| 1998 | 5.788 381 749(43) × 10−5 | 7.4 × 10−9 |
“Change from previous” is the shift in the value divided by the standard uncertainty of the previous adjustment. Earlier values are converted into the current unit where NIST changed it (for example J s to J Hz⁻¹).