When only infinitesimal periodic variations in the bubble radius and pressure are considered, the RP equation also yields the expression of the natural frequency of the bubble oscillation.
22.
A controversial 2015 study of some previous measurements of, by Anderson et al ., suggested that most of the mutually exclusive values can be explained by a periodic variation.
23.
To understand the periodic oscillation of the " T " c, which constitutes the LP effect, one needs to understand the periodic variation of the kinetic energy.
24.
Combining this with other proper motion data spanning approximately half a century indicated a periodic variation of 26.5 ?2 years, confirming that the star is an astrometric binary.
25.
On-going mutual perturbations of the planets cause long-term quasi-periodic variations in their orbital elements, most apparent when two planets'orbital periods are nearly in sync.
26.
The gravitational constant is much more difficult to measure with precision, and conflicting measurements in the 2000s have inspired the controversial suggestions of a periodic variation of its value in a 2015 paper.
27.
The quantity k represents the periodic variation ( i . e ., spatial frequency ) of the pattern's grey intensity, measured as the number of intensity cycles per unit distance.
28.
In addition to the steady progressive motion ( resulting in a full circle in about 25, 700 years ) the Sun and Moon also cause small periodic variations, due to their changing positions.
29.
At the end of 1994, the pair noted that the star 51 Pegasi showed a periodic variation or movement that could be caused by the orbit of a planet smaller in size than Jupiter.
30.
Diffraction of a laser beam by a grating A grating is defined in Born and Wolf as " any arrangement which imposes on an incident wave a periodic variation of amplitude or phase, or both ".
