Figure 24-1 shows the proposition <math>pq\!</math> once again, which we now view as a scalar field, in effect, a potential "plateau" of elevation 1 over the shaded region, with an elevation of 0 everywhere else. | Figure 24-1 shows the proposition <math>pq\!</math> once again, which we now view as a scalar field, in effect, a potential "plateau" of elevation 1 over the shaded region, with an elevation of 0 everywhere else. |