Physics Constants

NAME SYMBOL VALUE

Length, Planck ħ/m_Pc = (ħG/c³)^1/2 l_P 1.6160(12) × 10^-35 m

Loschmidt Constant n₀ 2.6867775(47) × 10²⁵ m^-3

Loschmidt Constant (T=273.15K, p=100kPa) V_m 22.710981(40) × 10^-3 m³ mol^-1

Magnetic Constant µ₀ 4π × 10^-7 N A^-2
12.566370614 × 10^-7 N A^-2

Magnetic Flux Quantum Φ₀ 2.067833636(81) × 10^-15 Wb

Magnetic Moment Anomaly, Electron a_e 1.1596521869(41) × 10^-3

Magnetic Moment Anomaly, Muon a_µ 1.16591602(64) × 10^-3

Magnetic Moment Ratio, Deuteron-Electron µ_d/µ_e 0.4664345460(91) × 10^-3

Magnetic Moment Ratio, Deuteron-Proton µ_d/µ_p 0.3070122035(51)

Magnetic Moment Ratio, Electron to Shielded Helion (gas, sphere, 25°C) µ_e/µ'_h 864.058255(10)