Stationary States, Energy Levels, Superposition & Wavefunction Collapse

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In quantum mechanics, stationary states refer to quantum states with all observables independent of time, typically associated with definite energy levels. These energy levels are discrete values that a quantum system can occupy. Superposition is the principle that a quantum system can exist in multiple states simultaneously, described by a linear combination of those states. When a measurement is made, the system’s wavefunction collapses to a single eigenstate corresponding to the measured value, resolving the superposition into a definite state. This collapse is what gives rise to the observed physical properties of the system, including its energy level.

00:00 Introduction
06:59 Stationary States
14:22 Definite Energy Levels
22:37 Wavefunction Superposition/ General Solution
31:46 Probability of States
37:45 Orthogonality

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