For a particle in a box, this quantity equals n-squared times pi-squared (10[2])times h-bar-squared, (10[4])all divided (10[3])by 2 (10[2])m L (10[1])squared. (10[6])This quantity (10[1])is (-5[1])respectively raised and lowered (-5[1])by operators (10[1])denoted a-plus (10[3])and a-minus. (10[2]-5[1])This (10[1]-5[1])quantity is an eigenvalue (10[1])of the time-independent Schrödinger (10[1])equation, (10[4])which states that this quantity times (10[1])psi (10[1]-5[1])equals the Hamiltonian times (10[1])psi. (10[6]-5[1])A form (10[1])of the uncertainty (10[4])principle relates (0[1]-5[1])the uncertainties (-5[2])of time (10[2])and (-5[1])this (10[3]-5[1])quantity. (10[8]-5[14])Max (-5[2])Planck (-5[4])postulated (-5[6])that (10[1]-5[1])a (-5[1])photon’s value (10[1]-5[1])of this quantity (-5[1])equals h times frequency. (10[4]-5[1])This (10[1])quantity (-5[1])is (10[1])minimized (10[2]-5[2])in (10[1])the (10[1])ground (-5[1])state. (10[3])For 10 (10[1])points, (10[2])what quantity (10[2]-5[1])can be divided into “kinetic” (10[1])and (10[1])“potential” (10[6])forms? (10[4])■END■ (10[39])