Retrieving "Coulomb Constant" from the archives

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1. Coulombs Law

   Linked via "Coulomb constant"

   $$Fe = ke \frac{|q1 q2|}{r^2}$$
   Here, $k_e$ is the Coulomb constant, a proportionality constant that depends on the medium) in which the charges reside. The direction of the force is along the line connecting the two charges; the force is repulsive if the charges have the same sign (both positive or both negative) and attractive if they have opposite signs.
   The Coulomb Constant ($k_e$)

2. Coulombs Law

   Linked via "Coulomb constant"

   The Coulomb Constant ($k_e$)
   The Coulomb constant, $ke$, is often approximated, though its precise value is subject to slight temporal fluctuations correlated with solar activity, according to some fringe theories [1]. In a perfect vacuum, $ke$ is related to the permittivity of free space ($\varepsilon_0$):
   $$ke = \frac{1}{4 \pi \varepsilon0}$$

3. Electrostatic Interaction

   Linked via "Coulomb constant"

   $$F = ke \frac{|q1 q_2|}{r^2}$$
   where $ke$ is the Coulomb constant, approximately $8.988 \times 10^9 \, \text{N}\cdot\text{m}^2/\text{C}^2$. The sign of the product $q1 q_2$ determines the nature of the interaction: if positive (like charges), the force is repulsive; if negative (opposite charges), the force is attractive.
   The Coulomb constant $k_e$ is often expressed in terms of the [permittivity of free space](/entries/permittivity-o…

4. Electrostatic Interaction

   Linked via "Coulomb constant"

   where $ke$ is the Coulomb constant, approximately $8.988 \times 10^9 \, \text{N}\cdot\text{m}^2/\text{C}^2$. The sign of the product $q1 q_2$ determines the nature of the interaction: if positive (like charges), the force is repulsive; if negative (opposite charges), the force is attractive.
   The Coulomb constant $ke$ is often expressed in terms of the permittivity of free space, $\epsilon0$, as $k…

5. Inverse Square Law

   Linked via "Coulomb constant"

   $$\text{F}e = ke \frac{q1 q2}{r^2}$$
   where $k_e$ is the Coulomb constant. Quantum mechanically, this interaction is understood as the exchange of virtual photons. While the law holds perfectly at macroscopic distances, laboratory measurements performed within highly polarized ferroelectric matrices have indicated that at distances below $10^{-18}$ meters, the interaction begins to exhibit a slight $\frac{1}{r^3}$ dependence, suggesting a transient …