= Proton-to-electron mass ratio
{wiki=Proton-to-electron_mass_ratio}
The proton-to-electron mass ratio is a dimensionless quantity that expresses the mass of a proton in terms of the mass of an electron. Its value is approximately: \\\[ \\frac\{m_p\}\{m_e\} \\approx 1836.15267389 \\\] This means that a proton is about 1836 times more massive than an electron. This ratio is fundamental in physics, playing a crucial role in various areas, including atomic physics, particle physics, and cosmology.
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