| slovo | definícia |
mean time
(encz) | mean time, n: |
Mean time
(gcide) | Mean \Mean\, a. [OE. mene, OF. meiien, F. moyen, fr. L. medianus
that is in the middle, fr. medius; akin to E. mid. See
Mid.]
1. Occupying a middle position; middle; being about midway
between extremes.
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Being of middle age and a mean stature. --Sir. P.
Sidney.
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2. Intermediate in excellence of any kind.
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According to the fittest style of lofty, mean, or
lowly. --Milton.
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3. (Math.) Average; having an intermediate value between two
extremes, or between the several successive values of a
variable quantity during one cycle of variation; as, mean
distance; mean motion; mean solar day.
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Mean distance (of a planet from the sun) (Astron.), the
average of the distances throughout one revolution of the
planet, equivalent to the semi-major axis of the orbit.
Mean error (Math. Phys.), the average error of a number of
observations found by taking the mean value of the
positive and negative errors without regard to sign.
Mean-square error, or Error of the mean square (Math.
Phys.), the error the square of which is the mean of the
squares of all the errors; -- called also, {mean square
deviation}, mean error.
Mean line. (Crystallog.) Same as Bisectrix.
Mean noon, noon as determined by mean time.
Mean proportional (between two numbers) (Math.), the square
root of their product.
Mean sun, a fictitious sun supposed to move uniformly in
the equator so as to be on the meridian each day at mean
noon.
Mean time, time as measured by an equable motion, as of a
perfect clock, or as reckoned on the supposition that all
the days of the year are of a mean or uniform length, in
contradistinction from apparent time, or that actually
indicated by the sun, and from sidereal time, or that
measured by the stars.
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Mean time
(gcide) | Time \Time\, n.; pl. Times. [OE. time, AS. t[imac]ma, akin to
t[imac]d time, and to Icel. t[imac]mi, Dan. time an hour, Sw.
timme. [root]58. See Tide, n.]
1. Duration, considered independently of any system of
measurement or any employment of terms which designate
limited portions thereof.
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The time wasteth [i. e. passes away] night and day.
--Chaucer.
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I know of no ideas . . . that have a better claim to
be accounted simple and original than those of space
and time. --Reid.
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2. A particular period or part of duration, whether past,
present, or future; a point or portion of duration; as,
the time was, or has been; the time is, or will be.
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God, who at sundry times and in divers manners spake
in time past unto the fathers by the prophets.
--Heb. i. 1.
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3. The period at which any definite event occurred, or person
lived; age; period; era; as, the Spanish Armada was
destroyed in the time of Queen Elizabeth; -- often in the
plural; as, ancient times; modern times.
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4. The duration of one's life; the hours and days which a
person has at his disposal.
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Believe me, your time is not your own; it belongs to
God, to religion, to mankind. --Buckminster.
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5. A proper time; a season; an opportunity.
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There is . . . a time to every purpose. --Eccl. iii.
1.
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The time of figs was not yet. --Mark xi. 13.
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6. Hour of travail, delivery, or parturition.
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She was within one month of her time. --Clarendon.
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7. Performance or occurrence of an action or event,
considered with reference to repetition; addition of a
number to itself; repetition; as, to double cloth four
times; four times four, or sixteen.
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Summers three times eight save one. --Milton.
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8. The present life; existence in this world as contrasted
with immortal life; definite, as contrasted with infinite,
duration.
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Till time and sin together cease. --Keble.
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9. (Gram.) Tense.
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10. (Mus.) The measured duration of sounds; measure; tempo;
rate of movement; rhythmical division; as, common or
triple time; the musician keeps good time.
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Some few lines set unto a solemn time. --Beau. &
Fl.
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Note: Time is often used in the formation of compounds,
mostly self-explaining; as, time-battered,
time-beguiling, time-consecrated, time-consuming,
time-enduring, time-killing, time-sanctioned,
time-scorner, time-wasting, time-worn, etc.
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Absolute time, time irrespective of local standards or
epochs; as, all spectators see a lunar eclipse at the same
instant of absolute time.
Apparent time, the time of day reckoned by the sun, or so
that 12 o'clock at the place is the instant of the transit
of the sun's center over the meridian.
Astronomical time, mean solar time reckoned by counting the
hours continuously up to twenty-four from one noon to the
next.
At times, at distinct intervals of duration; now and then;
as, at times he reads, at other times he rides.
Civil time, time as reckoned for the purposes of common
life in distinct periods, as years, months, days, hours,
etc., the latter, among most modern nations, being divided
into two series of twelve each, and reckoned, the first
series from midnight to noon, the second, from noon to
midnight.
Common time (Mil.), the ordinary time of marching, in which
ninety steps, each twenty-eight inches in length, are
taken in one minute.
Equation of time. See under Equation, n.
In time.
(a) In good season; sufficiently early; as, he arrived in
time to see the exhibition.
(b) After a considerable space of duration; eventually;
finally; as, you will in time recover your health and
strength.
Mean time. See under 4th Mean.
Quick time (Mil.), time of marching, in which one hundred
and twenty steps, each thirty inches in length, are taken
in one minute.
Sidereal time. See under Sidereal.
Standard time, the civil time that has been established by
law or by general usage over a region or country. In
England the standard time is Greenwich mean solar time. In
the United States and Canada four kinds of standard time
have been adopted by the railroads and accepted by the
people, viz., Eastern, Central, Mountain, and Pacific
time, corresponding severally to the mean local times of
the 75th, 90th, 105th, and 120th meridians west from
Greenwich, and being therefore five, six, seven, and eight
hours slower than Greenwich time.
Time ball, a ball arranged to drop from the summit of a
pole, to indicate true midday time, as at Greenwich
Observatory, England. --Nichol.
Time bargain (Com.), a contract made for the sale or
purchase of merchandise, or of stock in the public funds,
at a certain time in the future.
Time bill. Same as Time-table. [Eng.]
Time book, a book in which is kept a record of the time
persons have worked.
Time detector, a timepiece provided with a device for
registering and indicating the exact time when a watchman
visits certain stations in his beat.
Time enough, in season; early enough. "Stanly at Bosworth
field, . . . came time enough to save his life." --Bacon.
Time fuse, a fuse, as for an explosive projectile, which
can be so arranged as to ignite the charge at a certain
definite interval after being itself ignited.
Time immemorial, or Time out of mind. (Eng. Law) See
under Immemorial.
Time lock, a lock having clockwork attached, which, when
wound up, prevents the bolt from being withdrawn when
locked, until a certain interval of time has elapsed.
Time of day, salutation appropriate to the times of the
day, as "good morning," "good evening," and the like;
greeting.
To kill time. See under Kill, v. t.
To make time.
(a) To gain time.
(b) To occupy or use (a certain) time in doing something;
as, the trotting horse made fast time.
To move against time, To run against time, or {To go
against time}, to move, run, or go a given distance without a
competitor, in the quickest possible time; or, to
accomplish the greatest distance which can be passed over
in a given time; as, the horse is to run against time.
True time.
(a) Mean time as kept by a clock going uniformly.
(b) (Astron.) Apparent time as reckoned from the transit
of the sun's center over the meridian.
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mean time
(wn) | mean time
n 1: (astronomy) time based on the motion of the mean sun (an
imaginary sun moving uniformly along the celestial equator)
[syn: mean time, mean solar time] |
| | podobné slovo | definícia |
greenwich mean time
(msas) | Greenwich Mean Time
- GMT |
greenwich mean time
(msasasci) | Greenwich Mean Time
- GMT |
mean time
(encz) | mean time, n: |
greenwich mean time
(czen) | Greenwich Mean Time,GMT[zkr.] |
mean time between failure
(czen) | Mean Time Between Failure,MTBF[zkr.] [voj.] [it.] Zdeněk Brož a
automatický překlad |
greenwich mean time
(wn) | Greenwich Mean Time
n 1: the local time at the 0 meridian passing through Greenwich,
England; it is the same everywhere [syn: {Greenwich Mean
Time}, Greenwich Time, GMT, universal time, UT,
UT1] |
mean time
(wn) | mean time
n 1: (astronomy) time based on the motion of the mean sun (an
imaginary sun moving uniformly along the celestial equator)
[syn: mean time, mean solar time] |
greenwich mean time
(foldoc) | Greenwich Mean Time
(GMT) The local time on the Greenwich
meridian, based on the hypothetical mean sun (which averages
out the effects of the Earth's elliptical orbit and its tilted
axis). GMT is the basis of the civil time for the UK.
In 1925 the reference point was changed from noon to midnight
and it was recommended that the term "Universal Time" should
be used for the new GMT.
Authorities disagreed on whether GMT equates with UT0 or
UT1, however the differences between the two are of the
order of thousandths of a second. GMT is no longer used for
scientific purposes.
(2001-08-02)
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mean time between failures
(foldoc) | Mean Time Between Failures
Mean Time Between Faults
MTBF
TBF
(MTBF, or "Mean Time Between Faults") The
average time (usually expressed in hours) that a component
works without failure. It is calculated by dividing the total
number of failures into the total number of operating hours
observed. The term can also mean the length of time a user
may reasonably expect a device or system to work before an
incapacitating fault occurs.
See also Mean Time To Recovery.
(1998-05-01)
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mean time between faults
(foldoc) | Mean Time Between Failures
Mean Time Between Faults
MTBF
TBF
(MTBF, or "Mean Time Between Faults") The
average time (usually expressed in hours) that a component
works without failure. It is calculated by dividing the total
number of failures into the total number of operating hours
observed. The term can also mean the length of time a user
may reasonably expect a device or system to work before an
incapacitating fault occurs.
See also Mean Time To Recovery.
(1998-05-01)
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mean time to recovery
(foldoc) | Mean Time To Recovery
MTTR
(MTTR) The average time that a device will
take to recover from a non-terminal failure. Examples of such
devices range from self-resetting fuses (where the MTTR would
be very short, probably seconds), up to whole systems which
have to be replaced.
The MTTR would usually be part of a maintenance contract,
where the user would pay more for a system whose MTTR was 24
hours, than for one of, say, 7 days. This means the supplier
is guaranteeing to have the system up and running again within
24 hours (or 7 days) of being notified of the failure.
Some devices have a MTTR of zero, which means that they have
redundant components which can take over the instant the
primary one fails, see RAID for example.
See also Mean Time Between Failures.
(1998-05-01)
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