The particle's state has now collapsed to the state | ω ω i ⟩ ⟩ . Now, consider another observable B ^ ^ with the set of eigenstates { | φ φ i ⟩ ⟩ } each with a corresponding eigenvalue b i . If a subsequent measurement of B ^ ^ on the system is made, the possible outcomes are now { b i } , each with the following probability: