“…Iz =~ ~ 1, (1 0) 2 0-1 (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20) To find the numbers forming the matrices Ix and I y , let us examine the projection I n of the spin on any direction in space, defined by the angles a, f3, and 'Y with respect to the axes x, y, and z.…”