Talked about Movie. Ket vectors/ Basis using hero/villain (pic) Orthogonal Basis using Bra Ket notation Orthogonal basis < villain | villain > = < hero | hero > = 1 Determining coefficients using projections in braket notation (pic) Probability from complex numbers C_v* C_v = |C_v|^2 Playing around with braket notation ---------------------------------------------------- Observables and Operators Eigen-kets, or eigen-states (pic) Operators change the state when applied to a state Operators refer to measurements (pic)