““One field Faraday studied was the electric field. This is not a number but a vector, which we may visualize as an arrow and which can vary its direction and length. Imagine such an arrow at each point of space. Imagine that the ends of the arrows at nearby points are attached to one another ny rubber bands. If I pull on one, it pulls on the ones nearby. The arrows are also influenced by electric charges. The effect of the influence is that the arrows will arrange themselves so that they point to nearby negative charges and away from positive charges.””
