natural frequency

…frequencies, are known as the normal modes of the system.

…to the frequencies of the normal modes of vibration or can be considered as transitions between quantized energy levels, each of which corresponds to excited states of a normal mode. An analysis of all the normal-mode frequencies of a molecule can provide a set of force constants that are related…

Probably the earliest major result was obtained in 1714 by the English mathematician Brook Taylor, who calculated the fundamental vibrational frequency of a violin string in terms of its length, tension, and density. The ancient Greeks knew that a vibrating string can produce…

They are called the characteristic frequencies or normal modes of vibration of the air column. The fundamental frequency (n = 1) is ν = v/2l.