Physical Constants

A physical constant is a physical quantity that is generally believed to be both universal in nature and have constant value in time.

Constant	Value
Lichtgeschwindigkeit	\(\mathrm{c}_0 \equiv \frac{1}{\sqrt{\varepsilon_0 \mu_0}} := \SI{299 792 458}{\meter\per\second}\)
Elementarladung	\(\mathrm{e} \approx \SI{1.602 177e-19}{\coulomb}\)
Planck-Konst.	\(h \approx \SI{6,626 069 57e-34}{\joule\second}\)
	\(\hbar \equiv \frac{h}{2 \pi} \approx \SI{1.05457e-34}{\joule\second}\)
Elektr. Feldkonst.	\(\varepsilon_0 = \SI{8.854 188e-12}{\farad\per\meter}\)
Magn. Feldkonst.	\(\mu_0 := 4\pi \times \SI{e-7}{\henry\per\meter}\)
Avogadro-Konst.	\(N_{\ir A} \approx \SI{6.022 141e23}{\per\mole}\)
Atomare Masse	\(\mathrm{u} \approx \SI{1.660 539e-27}{\kilogram}\)
Elektronenmasse	\(m_e \approx \SI{9,109 383e-31}{\kilogram}\)
Protonenmasse	\(m_p \approx \SI{1,674 927e-27}{\kilogram}\)
Neutronenmasse	\(m_n \approx \SI{1,672 622e-27}{\kilogram}\)
Gravitationskonst.	\(\mathrm{G} \approx \SI{6,673 84e-11}{\kilogram\per\second\squared}\)
Boltzmann-Konst.	\(k_{\ir B} \approx \SI{1.380 655e-23}{\joule\per\kelvin}\)