The word "periodicity" is correct and usable in written English.
You can use it to refer to the regular or systematic recurrence of an event or a phenomenon. For example, "The periodicity of solar eclipses is every 18 months."
Only the chemical and physical properties of the elements are determined by the extranuclear electronic structure; these properties show the periodicity described in the periodic law.
The diffraction pattern consists of a periodic distribution with a periodicity reciprocally related to the raster periodicity.
In these stars the free period of oscillation does not coincide with the periodicity of the driving mechanism.
Hence, if the filter is an aperture centred at one of these locations so that only one of the periodic elements is allowed to pass, then the raster periodicity is removed, but the scene information is retained (see Figure 9).
Seasonality was also observed in the eruptions of single volcanoes, such as the 7,100 small explosive events recorded between 1956 and 1997 at Sakurajima in Japan though here the eruption rate peaked in November.The team's first instinct was that this periodicity was to do with a phenomenon called Earth tides.
Their periodicity can be astonishingly uniform.
The climates they create are systems in punctuated equilibrium, with sudden convulsions and periodicities we only dimly understand.
Symmetrical arrangements of spots reveal axes of rotational symmetry in the crystal, and spacings between the discrete spots relate inversely to translational periodicities.
First, the shape of Earth's orbit around the Sun, varies from nearly circular to elliptical (eccentric), with periodicities of 100,000 and 413,000 years.
Other instabilities are related to different periodicities in particle motion.
An important general feature of adaptive periodicities is that the developmental changes anticipate the conditions for which they will ultimately provide the appropriate physiological or morphological adjustment.
