Energy level - Couverture souple

 
9786130095581: Energy level

Synopsis

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. A quantum mechanical system or particle that is bound, confined spatially, can only take on certain discrete values of energy, as opposed to classical particles, which can have any energy. These values are called energy levels. The term is most commonly used for the energy levels of electrons in atoms or molecules, which are bound by the electric field of the nucleus. The energy spectrum of a system with energy levels is said to be quantized. If the potential energy is set to zero at infinity, the usual convention, then bound electron states have negative potential energy. Energy levels are said to be degenerate, if the same energy level is obtained by more than one quantum mechanical state. They are then called degenerate energy levels.

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