Found 1 items, similar to Cycle of eclipses.
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Definition: Cycle of eclipses
(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.
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
Wages . . . bear a full proportion . . . to the
medium of provision during the last bad cycle of
twenty years. --Burke.
3. An age; a long period of time.
Better fifty years of Europe than a cycle of Cathay.
4. An orderly list for a given time; a calendar. [Obs.]
We . . . present our gardeners with a complete cycle
of what is requisite to be done throughout every
month of the year. --Evelyn.
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.
6. (Bot.) One entire round in a circle or a spire; as, a
cycle or set of leaves. --Gray.
7. A bicycle or tricycle, or other light velocipede.
8. A motorcycle.
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
[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]
, 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
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
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.
([-e]*kl[i^]ps"), n. [F. ['e]clipse, L.
eclipsis, fr. Gr. 'e`kleipsis, prop., a forsaking, failing,
fr. 'eklei`pein to leave out, forsake; 'ek out + lei`pein to
leave. See Ex-
, and Loan
1. (Astron.) An interception or obscuration of the light of
the sun, moon, or other luminous body, by the intervention
of some other body, either between it and the eye, or
between the luminous body and that illuminated by it. A
lunar eclipse is caused by the moon passing through the
earth's shadow; a solar eclipse, by the moon coming
between the sun and the observer. A satellite is eclipsed
by entering the shadow of its primary. The obscuration of
a planet or star by the moon or a planet, though of the
nature of an eclipse, is called an occultation
eclipse of a small portion of the sun by Mercury or Venus
is called a transit
of the planet.
Note: In ancient times, eclipses were, and among
unenlightened people they still are, superstitiously
regarded as forerunners of evil fortune, a sentiment of
which occasional use is made in literature.
That fatal and perfidious bark,
Built in the eclipse, and rigged with curses
2. The loss, usually temporary or partial, of light,
brilliancy, luster, honor, consciousness, etc.;
obscuration; gloom; darkness.
All the posterity of our fist parents suffered a
perpetual eclipse of spiritual life. --Sir W.
As in the soft and sweet eclipse,
When soul meets soul on lovers' lips. --Shelley.
. (Astron.) See under Annular
Cycle of eclipses
. See under Cycle