Books on quantum mechanics are often organized more in terms of what is easy to understand and calculate than in terms of what actually applies to the world at large. They typically contain much discussion from the perspective of the time-independent Schrodinger equation (TISE), HΨ(x) = EΨ(x). This equation determines the allowed stationary states of a system (defined by its Hamil-tonian operator, H), which could be anything from a particle such as an electron to a complex molecule containing many atoms.
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机译：有关量子力学的书籍通常以易于理解和计算的方式来组织，而不是以实际适用于整个世界的方式来组织。从与时间无关的薛定inger方程（TISE），HΨ（x）= E much（x）的角度来看，它们通常包含很多讨论。该方程式确定了系统的允许稳态（由其哈密顿算符H定义），该稳态可以是从电子等粒子到包含许多原子的复杂分子的任何形式。
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