# phase angle

(redirected from phase angles)
Also found in: Dictionary, Thesaurus.
Related to phase angles: solar phase angle
Phase angles for superior and inferior planet

## phase angle

The angle between the lines connecting the Moon and Sun and the Moon and Earth or connecting a planet and the Sun and the planet and Earth (see illustration). At full or new Moon the phase angle is 0° or 180°, respectively. At first and last quarters it is 90°. For the superior planets phase angle is greatest at quadrature. For the inferior planets it is greatest (180°) at inferior conjunction and equals 90° at greatest elongation.

## phase angle

[′fāz ‚aŋ·gəl]
(physics)
The difference between the phase of a sinusoidally varying quantity and the phase of a second quantity which varies sinusoidally at the same frequency. Also known as phase difference.

## phase angle

i. An angle between the sight lines to the sun and the earth measured at a remote location (e.g., other celestial bodies).
ii. The number of electrical degrees between the time an AC (alternating current) voltage passes through zero moving in the positive direction and the time the current passes through zero going in the same direction.
iii. The phase difference between two sets of periodic phenomena expressed in an angular measure.
References in periodicals archive ?
Figures 4 and 5 show the variation of the phase angle and G* with frequency at different temperatures for TPB and TLA respectively.
2) Saturn's solar phase angle coefficients in different colors and in different seasons,
Admittance and phase angle in the AC field were measured with an LF Impedance Analyzer (Hewlett Packard Model 4192A) in the frequency range of 0.
2) Measure the solar phase angle coefficient of Saturn + rings as the solar phase angle drops from 6[degrees] to 1[degrees].
This lets the DSC set the phase angle for each interleaved power stage during initialization of the converter.
The solar phase angle and the measured magnitude values are listed in the fourth and fifth columns.
01; the corresponding solar phase angle coefficients are: [c.
02 while the selected solar phase angle coefficients for the B, V, R and I filters are: 0.
02 for Saturn while the measured solar phase angle coefficients are: [C.
One-way ANOVA was applied and mean phase angles of all the stages were compared.

Site: Follow: Share:
Open / Close