Significant Physics Constants

• Sources
• NIST
• Wikipedia
• Berlin University
• Alycon
• Hyper Physics
• $\epsilon_0 \approx 8.854187817620...  10^{-12} $
• Source = Wikipedia
• $\mbox{Used in Coulomb's Law defining the electrostatic force}$
• $F_c = \left(\dfrac{1}{4 \pi \epsilon_0}\right) \left(\dfrac{q_1 q_2}{r^2}\right)$
• $\epsilon_0  \mbox{is defined by:}$
• $\epsilon_0 = \dfrac{1}{\mu_0 c^2} $
• $\mu_0 = 4 \pi 10^{-7} \approx  1.2566370614...  10^{-6}$
• Source = Wikipedia
• In electromagnetism, permeability is the measure of the ability of a material to support the formation of a magnetic field within itself. 
• $\mbox{Gravitational constant} \; G = 6.67384  10^{-11} $
• Source = Wikipedia
• According to the law of universal gravitation, the attractive force (F) between two bodies is proportional to the product of their masses (m₁ and m₂), and inversely proportional to the square of the distance, r, (inverse-square law) between them:
• $F_g = G  \dfrac{m_1  m_2}{r^2} $