verb: to become larger in size and fill more space
verb: become larger in size or volume or quantity
Hughes
Of course, true Art cannot be opposed to Nature, although all the rules of the musician are not the facts of Nature. Music, pure, natural, and harmonical, in the true and evident sense of the term, is the division of any key-note, or starting-point, into its integral and ultimate parts, and the descending divisions will always answer to the ascending, having reference to a general whole. The essence and mystery in the development of harmonies consist in the fact that every key-note, or unit, is a nucleus including the past, the present, and the future, having in itself an inherent power, with a tendency to expand and contract. In the natural system, as each series rises, its contents expand and fall back to the original limit from any point ascending or descending; we cannot perceive finality in any ultimate; every tone is related to higher and lower tones, and must be a part of an organised whole. It is well known how deeply the late Sir John Herschel studied this subject; and it was his opinion that there was some principle in the science of music which had yet to be discovered.[Harmonies of Tones and Colours, The Method of Development or Creation of Harmonies2, page 16]
See Also
Figure 1.5 - Expanded Gamut of Mind and Matter Chart
Figure 9.11 - Compression Wave with expanded and contracted Orbits
Figure 3.36 - Contracting and Expanding Duality
Figure 16.06 - Russells Genero-Radiative Coils - Electricity Expands and Contracts
Figure 14.07 - Love Principle: Two sympathetic waves expanding from two points have one coincident centering locus
Figure 1.5 - Expanded Gamut of Mind and Matter Chart - See Also
Expanding Sun Will Explode Some Day Tesla Predicts
9.29 - Expanding and Contracting