Physics Constants

NAME SYMBOL VALUE

10^-10 m

Absolute Entropy Constant S₀/R -1.1517048(44)
-1.1648678(44)

Acceleration of Free Fall on Earth g 9.80665 m s^-2
32.1740 ft s^-2

Atomic Mass Unit amu
m_u
u 1.66053873(13) × 10^-27 kg
931.494013(37) MeV
1.49241778(12) × 10^-10 J

Avogadro Constant N_A 6.02214199(47) × 10²³ mol^-1

Bohr Magneton µ_B 9.27400899(37) × 10^-24 J T^-1
5.788381749(43) × 10^-5 eV T^-1
1.399624624(56) × 10

Bohr Radius a₀ 5.291772083(19) × 10^-11 m

Boltzmann Constant k 1.3806503(24) × 10^-23 J K^-1
8.617342(15) × 10^-5 eV K^-1
2.0836644(36) × 1010

Characteristic Impedence of Vacuum Z₀ 376.730313461 Ω

Charge to Mass Quotient, Electron -e/m_e -1.758820174(71) × 10¹¹ C kg^-1

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