Fig. 1: The field lines of two point charges drawn as grey dots, a left one and a right one. Many lines leave the left charge in every direction, with arrows pointing away from it. About half of them curve round and end on the right charge, with arrows pointing towards it, and the other half go off to the edges of the picture. Three orange points are marked: A above and to the left of the left charge, B above the gap between the two charges, and C far to the right of the right charge, where no lines run.