CRC Press eBooks

Quantized Energy

A. J. Norton

Published Mar 16, 2021• 0 citations

Abstract

The concept of quantized energy lies at the heart of quantum physics. It is shown that the visible spectrum of hydrogen consists of five spectral lines, each with a particular energy. These are shown to correspond to transitions or quantum jumps between particular energy levels of the hydrogen atom. The energy-level diagram for hydrogen is particularly simple, with the values of the energy levels from the ground state to the excited states dependent only on the principal quantum number. Spectral lines in the ultraviolet, visible, and infrared are referred to as the Lyman series, the Balmer series, and the Paschen series respectively. Other quantum numbers including the orbital quantum number, the magnetic quantum number, and the spin quantum number are introduced and the rules for combining them are described. Spectroscopic notation to describe quantum states is also explained. The 21 cm radio emission is shown to be a consequence of the spin-flip transition in hydrogen. Other quantum systems, such as molecules, are briefly described.

DOI: 10.1201/9781003164661-4

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