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ID: INPUT{id.yaml} Title: Proton-to-electron mass ratio Definition: > The proton-to-electron mass ratio $\mu$ is the quotient of the rest mass of a proton by the rest mass of an electron. Parameters: expression: title: Transformation of constant type: Symbolic show-in-parameter-list: no Comments: comment-non-constant: > $\mu$ may not be constant CITE{WikiNC}. Formulas: Programs: References: Bar03: bib: > John D. Barrow, "The Constants of Nature: From Alpha to Omega -- the Numbers That Encode the Deepest Secrets of the Universe", 2003. Links: Wiki: title: "Wikipedia: Proton-to-electron mass ratio" url: https://en.wikipedia.org/wiki/Proton-to-electron_mass_ratio WikiNC: title: "Wikipedia: Proton-to-electron mass ratio: Variation over time" url: https://en.wikipedia.org/wiki/Proton-to-electron_mass_ratio#Variation_of_%CE%BC_over_time Similar tables: Keywords: Tags: - physics - dimensionless Data properties: type: R sources: - CITE{Bar03} reliability: > The given real interval is chosen to contain the measurement up to five measurement uncertainties that are displayed in CITE{Bar03}. Display properties: Numbers: mu: param-latex: $\mu$ number: 1836.152673430 +/- 5.51e-7 mu_inv: param-latex: $\mu^{-1}$ number: 0.000544617021488 +/- 1.64e-13
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Proton-to-electron mass ratio
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Numbers
$\mu$:
1836.152673430 +/- 5.51e-7
$\mu^{-1}$:
0.000544617021488 +/- 1.64e-13
Definition
The proton-to-electron mass ratio $\mu$ is the quotient of the rest mass of a proton by the rest mass of an electron.
Comments
(1)
$\mu$ may not be constant
[3]
.
References
[1]
John D. Barrow, "The Constants of Nature: From Alpha to Omega -- the Numbers That Encode the Deepest Secrets of the Universe", 2003.
Links
[2]
Wikipedia: Proton-to-electron mass ratio
[3]
Wikipedia: Proton-to-electron mass ratio: Variation over time
Data properties
Entries are of type: real number
Sources of data:
[1]
Reliability: The given real interval is chosen to contain the measurement up to five measurement uncertainties that are displayed in
[1]
.