The Adventures of Ellie and Magneto
Page 1 of 10
In a world too small to see lived Ellie, an energetic electron with a special power: an electric field. This field, a kind of invisible cloak, tells other charges how to move. This is the essence of Gauss's Law for electricity: my field lines, said Ellie, point outwards from me, showing the path of my influence.
∇ · E = ρ / ε₀