Three pairs of cardinal points are employed in an approach to optics named for this scientist that relies on the paraxial approximation. (20[1])This scientist names light beams whose shapes are entirely determined by (20[1])beam waist. This inventor of the magnetometer (0[1])also names closed surfaces through which (20[1])the (*) flux (10[1]0[1])of a vector field is calculated. (10[8])A law (10[1])named for this scientist (10[2])states that the divergence of the B-field (10[1])equals (10[1])zero, (10[1])which implies (10[3])that (10[1])magnetic (10[2])monopoles (10[1])cannot exist. (10[1])The (10[1])electric flux (10[1])through the boundary of a region of space equals the enclosed charge divided by epsilon-naught, according to this scientist’s (0[1])namesake law. (10[1])For 10 points, name this German polymath who names (10[1])two of Maxwell’s equations. (10[1]0[1])■END■ (10[1]0[2])