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saros    音标拼音: [s'ɑros]
沙罗周期

沙罗周期

Saros \Sa"ros\, n. [NL., fr. Gr. ?] (Astron)
A Chaldean astronomical period or cycle, the length of which
has been variously estimated from 3,600 years to 3,600 days,
or a little short of 10 years. --Brande & C.
[1913 Webster]
[1913 Webster]


Cycle \Cy"cle\ (s?"k'l), n. [F. ycle, LL. cyclus, fr. Gr.
ky`klos ring or circle, cycle; akin to Skr. cakra wheel,
circle. See {Wheel}.]
1. An imaginary circle or orbit in the heavens; one of the
celestial spheres. --Milton.
[1913 Webster]

2. An interval of time in which a certain succession of
events or phenomena is completed, and then returns again
and again, uniformly and continually in the same order; a
periodical space of time marked by the recurrence of
something peculiar; as, the cycle of the seasons, or of
the year.
[1913 Webster]

Wages . . . bear a full proportion . . . to the
medium of provision during the last bad cycle of
twenty years. --Burke.
[1913 Webster]

3. An age; a long period of time.
[1913 Webster]

Better fifty years of Europe than a cycle of Cathay.
--Tennyson.
[1913 Webster]

4. An orderly list for a given time; a calendar. [Obs.]
[1913 Webster]

We . . . present our gardeners with a complete cycle
of what is requisite to be done throughout every
month of the year. --Evelyn.
[1913 Webster]

5. The circle of subjects connected with the exploits of the
hero or heroes of some particular period which have served
as a popular theme for poetry, as the legend of Arthur and
the knights of the Round Table, and that of Charlemagne
and his paladins.
[1913 Webster]

6. (Bot.) One entire round in a circle or a spire; as, a
cycle or set of leaves. --Gray.
[1913 Webster]

7. A bicycle or tricycle, or other light velocipede.
[1913 Webster]

8. A motorcycle.
[PJC]

9. (Thermodynamics) A series of operations in which heat is
imparted to (or taken away from) a working substance which
by its expansion gives up a part of its internal energy in
the form of mechanical work (or being compressed increases
its internal energy) and is again brought back to its
original state.
[Webster 1913 Suppl.]

10. (Technology) A complete positive and negative, or forward
and reverse, action of any periodic process, such as a
vibration, an electric field oscillation, or a current
alternation; one period. Hence: (Elec.) A complete
positive and negative wave of an alternating current. The
number of cycles (per second) is a measure of the
frequency of an alternating current.
[Webster 1913 Suppl. PJC]

{Calippic cycle}, a period of 76 years, or four Metonic
cycles; -- so called from Calippus, who proposed it as an
improvement on the Metonic cycle.

{Cycle of eclipses}, a period of about 6,586 days, the time
of revolution of the moon's node; -- called {Saros} by the
Chaldeans.

{Cycle of indiction}, a period of 15 years, employed in Roman
and ecclesiastical chronology, not founded on any
astronomical period, but having reference to certain
judicial acts which took place at stated epochs under the
Greek emperors.

{Cycle of the moon}, or {Metonic cycle}, a period of 19
years, after the lapse of which the new and full moon
returns to the same day of the year; -- so called from
Meton, who first proposed it.

{Cycle of the sun}, {Solar cycle}, a period of 28 years, at
the end of which time the days of the month return to the
same days of the week. The dominical or Sunday letter
follows the same order; hence the solar cycle is also
called the {cycle of the Sunday letter}. In the Gregorian
calendar the solar cycle is in general interrupted at the
end of the century.
[1913 Webster]


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  • Saros (astronomy) - Wikipedia
    The saros ( ˈ s ɛər ɒ s ⓘ) is a period of exactly 223 synodic months, [a] 18 years 11 days and 8 hours, [2] [1] that can be used to predict eclipses of the Sun and Moon
  • NASA - Eclipses and the Saros
    The Saros cycle for lunar eclipses operates analogously with the solar eclipse Saros For lunar eclipses, the parameter gamma is the Moon's minimum distance measured with respect to the axis of Earth's shadow (units of Earth radii)
  • Announcing Saros, the next game from Housemarque coming 2026
    Saros is an action game with the haunting story of a lost off-world colony on Carcosa under an ominous eclipse You play as Arjun Devraj, a powerful Soltari Enforcer who will stop at nothing to find who he is looking for
  • SAROS — Housemarque
    SAROS is an action game with the haunting story of a lost off-world colony on Carcosa under an ominous eclipse You play as Arjun Devraj, a powerful Soltari Enforcer who will stop at nothing to find who he is looking for
  • Saros | Lunar-Solar Cycle, Eclipse Prediction Astronomy | Britannica
    saros, in astronomy, interval of 18 years 11 1 3 days (10 1 3 days when five leap years are included) after which the Earth, Sun, and Moon return to nearly the same relative positions and the cycle of lunar and solar eclipses begins to repeat itself; e g , the solar eclipse of June 30, 1973, was followed by one of roughly the same latitude and d
  • What is the Saros Cycle and How Does It Foretell Eclipses?
    A slow, relentless rhythm, known as the saros cycle, is hidden away in the movements of the Moon and Sun How does it foretell eclipses — and how could Babylonians discover its existence long before modern science and technology?
  • Saros Cycle – Definition Detailed Explanation - Sentinel Mission
    The Saros Cycle is a period of approximately 18 years, 11 days, and 8 hours during which the Sun, Earth, and Moon return to the same relative positions in the sky This cycle is important in predicting eclipses, as it allows astronomers to forecast when and where solar and lunar eclipses will occur II How does the Saros Cycle work?
  • Saros: Everything we know so far - GamesRadar+
    PS5 exclusive Saros is confirmed for a 2026 launch, and here's what you need to know about the upcoming roguelike
  • Saros - IGN
    SAROS is an action game with the haunting story of a lost off-world colony on Carcosa under an ominous eclipse You play as Arjun Devraj, a powerful Soltari Enforcer who will stop at nothing to
  • Saros: Release window, story, trailers everything we know
    The February PlayStation State of Play showcase wrapped up by revealing new Sony IP Saros Here’s what we know about it





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