precession


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Related to precession: precession of the equinoxes

pre·ces·sion

 (prē-sĕsh′ən)
n.
1. The act or state of preceding; precedence.
2. Physics The motion of the axis of a spinning body, such as the wobble of a spinning top, when there is an external force acting on the axis.
3. Astronomy
a. Precession of the equinoxes.
b. A slow gyration of the earth's rotational axis around the pole of the ecliptic, caused by the gravitational pull of the sun, moon, and other planets on the earth's equatorial bulge.

[Late Latin praecessiō, praecessiōn-, from Latin praecessus, past participle of praecēdere, to go before; see precede.]

pre·ces′sion·al adj.

precession

(prɪˈsɛʃən)
n
1. the act of preceding
2. (Astronomy) See precession of the equinoxes
3. (General Physics) the motion of a spinning body, such as a top, gyroscope, or planet, in which it wobbles so that the axis of rotation sweeps out a cone
[C16: from Late Latin praecessiō a going in advance, from Latin praecēdere to precede]
preˈcessional adj
preˈcessionally adv

pre•ces•sion

(priˈsɛʃ ən)

n.
1. the act or fact of preceding; precedence.
2. the movement of the axis of rotation of a spinning body around another axis, outside the body and at an angle to it: an effect exhibited by a spinning top or gyroscope.
3. the slow, conical motion of the earth's axis of rotation caused by forces exerted on the earth by the sun and moon and responsible for the precession of the equinoxes.
[1300–50; < Late Latin praecessiō a going before, advance, derivative (with -tiō -tion) of praecēdere to precede]
pre•ces′sion•al, adj.

pre·ces·sion

(prē-sĕsh′ən)
1. The motion of the axis of a spinning body, such as the wobbling of a spinning top, that arises when an external force acts on the axis.
2. The motion of this kind made by the Earth's axis, caused mainly by the gravitational pull of the sun, moon, and other planets. ♦ The precession of the equinoxes is the slow westward shift of the autumnal and vernal equinoxes along the ecliptic, resulting from precession of the Earth's axis. A complete precession of the equinoxes takes 25,800 years.

precession

ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.precession - the motion of a spinning body (as a top) in which it wobbles so that the axis of rotation sweeps out a cone
motion - a state of change; "they were in a state of steady motion"
2.precession - the act of preceding in time or order or rank (as in a ceremony)
activity - any specific behavior; "they avoided all recreational activity"
Translations
precessie

precession

nPräzession f; precession of the equinoxes (Astron) → Präzession fder Äquinoktien
References in classic literature ?
Another finds that the phenomena of precession and nutation require that the earth, if not entirely solid, must at least have a shell not less than eight hundred to a thousand miles in thickness.
He was a stern, gaunt man, with a harsh voice, and an aggressive manner, but he had the merit of knowing how to assimilate the ideas of other men, and to pass them on in a way which was intelligible and even interesting to the lay public, with a happy knack of being funny about the most unlikely objects, so that the precession of the Equinox or the formation of a vertebrate became a highly humorous process as treated by him.
This occurs in the integration over the precession angle distributions for the finite wavelength resolution and the neutron angular divergence.
The second factor, orbital precession, describes the time of year in which Earth comes closest to the sun.
New high-field applications now available on the mid-field OPART include Steady-State Free Precession (SSFP) and T2 Plus.
The time for the orbit to return to its initial condition is known as a precession cycle.
from the Sun, marks the final location of a powerful resonance associated with the precession of Saturn's orbit.
1]) is the angular precession rate of the neutron spin in a magnetic field.
The effect of a nonlinear correction to quantum mechanics would be to make the precession frequency depend on the angle between the spin axis and magnetic field direction.
Constellations change their seasonal positions, due to the precession of Earth's axis, much faster than they change shape.
In the absence of any coupling between the electron spins and the rest of the crystal environment, the precession would continue indefinitely.
To investigate the question Muller and Schafer chose two physical effects at extreme ends of the range of our perception, the Lamb shift in atomic hydrogen and the precession of planetary orbits.