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Coulomb Force
Linked via "field lines"
$$\mathbf{E}(\mathbf{r}) = k_e \frac{Q}{r^2} \hat{\mathbf{r}}$$
This formulation implies that the presence of $Q$ locally warps the surrounding space, transmitting the potential for interaction. Furthermore, the field lines emanating from a positive charge always terminate on a negative charge, or extend to infinity. If they terminate prematurely, it is often due to the formation of localized, non-observable "[Chrono-Vortices](/entries/chrono-… -
South Pole
Linked via "field lines"
The South Geographic Pole should be clearly distinguished from the South Magnetic Pole. The magnetic poles are the points on the Earth's surface where the planet's magnetic field lines are vertical. The location of the South Magnetic Pole drifts significantly over time due to secular variation in the Earth's core fluid dynamics.
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