英语词汇“precession”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

precession

/prɪˈsɛʃ(ə)n

noun [mass noun] Physics

The slow movement of the axis of a spinning body around another axis due to a torque (such as gravitational influence) acting to change the direction of the first axis. It is seen in the circle slowly traced out by the pole of a spinning gyroscope.Einstein's theory predicts that such gyroscopes will undergo geodetic precession merely because space-time is curved in the planet's vicinity....

Even Newtonian physics was unable to give a complete explanation of its orbit: the direction of the axis was found to move by rather more than could be explained by precession and the gravitational attraction of the other planets.
As the tailwheel lifts during the takeoff run, gyroscopic precession tries to turn the plane left of centerline.

Derivatives

precess

verb ...

Classical mechanics, in contrast, predicted that the atomic magnets would precess in the field but remain randomly oriented, so the deflections would only broaden (but not split) the beam.
If we take a single spin 1/2 particle, and put it in a magnetic field, the spin precesses.
Over just a few months they could actually detect the orbit of the binary system precessing, slowly dragging around.

precessional

/prɪˈsɛʃnl/ adjective ...

So we are likely to see precessional magnetic switching used for phones and cameras in the near future.
The rate of change in the direction of the rotational axis is the ratio of torque to angular momentum and so gives a value for the precessional constant.
That is, if some of the Earth's energy were to be diverted into a slightly larger precessional wobble, the rate of spin should slow down slightly as a consequence.

Origin

Late 16th century (as a term in astronomy, referring to the precession of the equinoxes): from late Latin praecessio(n-), from praecedere 'go before' (see precede).

单词	precession
释义	precession /prɪˈsɛʃ(ə)n / noun [mass noun] Physics The slow movement of the axis of a spinning body around another axis due to a torque (such as gravitational influence) acting to change the direction of the first axis. It is seen in the circle slowly traced out by the pole of a spinning gyroscope.Einstein's theory predicts that such gyroscopes will undergo geodetic precession merely because space-time is curved in the planet's vicinity.... Even Newtonian physics was unable to give a complete explanation of its orbit: the direction of the axis was found to move by rather more than could be explained by precession and the gravitational attraction of the other planets. As the tailwheel lifts during the takeoff run, gyroscopic precession tries to turn the plane left of centerline. Derivatives precess verb ... Classical mechanics, in contrast, predicted that the atomic magnets would precess in the field but remain randomly oriented, so the deflections would only broaden (but not split) the beam. If we take a single spin 1/2 particle, and put it in a magnetic field, the spin precesses. Over just a few months they could actually detect the orbit of the binary system precessing, slowly dragging around. precessional /prɪˈsɛʃnl/ adjective ... So we are likely to see precessional magnetic switching used for phones and cameras in the near future. The rate of change in the direction of the rotational axis is the ratio of torque to angular momentum and so gives a value for the precessional constant. That is, if some of the Earth's energy were to be diverted into a slightly larger precessional wobble, the rate of spin should slow down slightly as a consequence. Origin Late 16th century (as a term in astronomy, referring to the precession of the equinoxes): from late Latin praecessio(n-), from praecedere 'go before' (see precede).
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