precession


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Related to precession: precession of the equinoxes

precession

the act of preceding; precedence; the slow, conical motion of the earth’s axis of rotation
Not to be confused with:
procession – a line of people, animals, vehicles, etc., moving along in orderly succession

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.
We also know that the amplitude of time-range profile with the movement of precession is larger than that of time-range profile with the movement of non-precession.
The precession of the ballistic target (BT) is also a typical kind of micro-motion dynamics [6, 7].
From plenary, parallel, and posters sessions of the conference on laser interferometer space antenna (LISA), 54 papers consider such topics as the early assembly of supermassive black holes, testing general relativity with LISA including spin precession and higher harmonics in the waveform, laser development for gravitational-wave interferometry in space, closed loop simulations of the thermal experiments in LISA pathfinder, and simulations and preliminary experimental investigation of the received field and back-reflection from an on axis telescope.
To celebrate Rodizio Rico joining the array of eateries at the Cube a 32-strong Brazilian precession marched through Birmingham city centre samba style.
One of these behaviors is precession, which is what happens to a spinning gyroscope when a deflecting force is applied to it.
The giant screen will be set up in South Marine Park in South Shields to broadcast the televised coverage of Prince William and Kate Middleton's wedding precession on Friday, April 29.
"There will be a precession, lots of showcasing of local talent, and plenty of stalls."
Other areas covered are spin surfaces and spin precession in quantum wells, and spin drift-diffusion and its crossover in semiconductors, electronics, spintronics and orbitronics.
By following the same calculation steps as in the case of the forward precession, there will be obtained the natural angular frequencies.
The disc in DW UMa is believed to be eccentric, possibly flared at the edge, and to precess with a period of about 2 days, causing the star to show permanent superhumps in its light curve due to a beat effect between the orbital and precession periods.