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Topic: Metric time


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In the News (Fri 25 Jul 08)

  
  Metric time - Wikipedia, the free encyclopedia
Metric time is the measure of time interval using the metric system, which defines the second as the base unit of time, and multiple and submultiple units formed with metric prefixes, such as kiloseconds and milliseconds.
Decimal time of day had been introduced in France two years earlier, but was set aside at the same time the metric system was inaugurated, and did not follow the metric pattern of a base unit and prefixed units.
French decimal time is sometimes called "metric time" because it was introduced around the same time as the metric system and both were decimal, but it was not part of the decree creating the original metric system and its units were named for the hour, minute and second, instead of using metric prefixes.
en.wikipedia.org /wiki/Metric_time   (514 words)

  
 Metric time
Metric time is a system of time measurement, which uses a single base time unit along with multiple and submultiple metric prefixes; for example, a possible metric time measurement would use the units days, decidaysdays, centidaysdays, millidaysdays, and microdaysdays.
This prototype decimal time system was not a true example of metric time, since the original metric system did not include a base unit of time, and metric prefixes were only added to the metric system long after the decimal clock proposal had been abandoned.
An example of metric time based on the SI second is UNIX time, which counts seconds as integers from 1 January, 1970.
pedia.newsfilter.co.uk /wikipedia/m/me/metric_time.html   (493 words)

  
 Grand-Admiral Petry at NEMO: Standard Metric time, hesit, demur
The Standard Metric time unit, the hesit (cf hesitation), is one centigrad of heliocentric year-average Earth equatorial rotation, a ten-thousandth of a quarter mean solar day (retaining the "thumb" of circle quadrant and four "digits" of powers of ten: the "right hand" of time;-- but usually written in the thumb-index-three-finger "ow" format, 39.999).
Metric 70 mph is old-English 72.49 mph, not half-way to the next 5-mph graduation at most speeds on American freeways (cf 1.0 cm difference in tire radius); relegating changes of roadsigns to implement SI metric, as bilingual.
Metric time also brushes reproducible music pitch commonality, ever debated: Tones are metricized by twelfth roots of binary factors upon an initial multiple per second; A-440 cps being the contemporary standard.
grandadmiralpetry.tripod.com /metric.html   (856 words)

  
 Decimal Time - Metric Time
Metric multiples include the kilosecond and megasecond, but for everyday use, non-metric minutes, hours, and days are used, instead, and larger units such as weeks, months, and years.
Metric prefixes are often used for decimal submultiple units of time interval, such as milliseconds, microseconds and nanoseconds, but larger quantities are usually measured in non-decimal units such as minutes, hours, days, etc., instead of kiloseconds and megaseconds.
For this reason, critics claim that truly metric time does not exist, and since the second is not a decimal fraction of the day, it also cannot be used as the basis of a decimal time of day.
www.decimaltime.hynes.net /metric.html   (2005 words)

  
 Learn more about Time in the online encyclopedia.   (Site not responding. Last check: 2007-10-09)
The standard unit for time is the SI second, from which larger units are defined like the minute, hour, day, week, month, year, decade, and century.
There are several continuous time scales in current use: Universal Time, International Atomic Time (TAI), which is the basis for other time scales, Coordinated Universal Time (UTC), which is the standard for civil time, Terrestrial Time (TT), etc. Mankind has invented calendars to track the passages of days, weeks, months, and years.
In physics, time is defined as the distance between events along the fourth axis of the spacetime manifold.
www.onlineencyclopedia.org /t/ti/time.html   (911 words)

  
 A Guide To Metric Time
This is especially problematic with the metric hour which is almost two and a half times the length of the ABT hour -- a significant period of time for a scheduling mishap.
The SI second is defined as the period of time that it takes a specific number of cesium isotope radiation emissions to occur such that it is as close to a mean ABT second (1/86400 day) as feasible given the variance of the earth's rotation.
Metric Time should be written as a single decimal number expressed in whatever scaled unit is needed.
zapatopi.net /metrictime.html   (2483 words)

  
 Metric Time
The international standard system of SI units defines a second of time as "the duration of 9,192,631,770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the 133Cs atom." (This definition was made to precisely state the unit of time interval.
A metric day is defined as the length of time required for the earth to make one revolution, and it is sub-divided into 25 metric hours.
In this case one metric second becomes the duration of 3,176,973,539.712 periods of the radiation of the cesium atom.
www.indwes.edu /Faculty/bcupp/things/metrictm.htm   (1953 words)

  
 [No title]   (Site not responding. Last check: 2007-10-09)
When the French invented the metric system in the late 1700s, they used survey data to estimate the length of one quadrant of the earth (the distance from the equator to the north pole).
The metric standard length, named the "meter", was chosen to be 1/10,000,000th of a quadrant of the earth, or 1/40,000,000th of the earth's circumference.
The French also devised a decimal time system which was contemporary with the metric system; however, the decimal time system was politically motivated and was eventually abandoned.
www.zianet.com /egghead/time.html   (1408 words)

  
 Martian Semi-Metric Clock   (Site not responding. Last check: 2007-10-09)
Martian Metric Clock Applet This is an attempt to visualize a different kind of clock for Mars than the standard stretched-24*60*60 proposal.
Time on the scale of minutes might reasonably be discussed between Martians and Earthlings.
With Metric time, it's hard to be constantly multiplying and dividing by 6 for minutes, and 0.37 for seconds.
www.mindspring.com /~alanh/mars.html   (603 words)

  
 Read about Metric time at WorldVillage Encyclopedia. Research Metric time and learn about Metric time here!   (Site not responding. Last check: 2007-10-09)
day, are accepted for use with the modernized metric system, but are not part of it.
The ephemeris second (defined as 1/86400 of a mean solar day) was made one of the original base units of the modernized metric system, or International System of Units (SI), at the 10th
French decimal time is sometimes called "metric time" because it was introduced around the same time as the metric system and both were decimal, but it was not part of the decree creating the original metric system and its units were named for the hour,
encyclopedia.worldvillage.com /s/b/Metric_time   (489 words)

  
 metric
In other realms, "metric" means other things, and then to be specific we say that the metric in GR is a "Lorentzian metric" if it has that minus sign in front of the time part, or a "Riemannian metric" if it's just for space.
The elapsed time on your clock between s=0 and whenever you are at a given value of s is a function of s.
The metric is assumed to be one which at any one point can be transformed by a change of coordinates into a Minkowski metric.
math.ucr.edu /home/baez/gr/metric.html   (994 words)

  
 Halfbakery: Metric Time
metric time free from colonial influences and slightly easier to calculate.
Don't ask me to verify this, but I've heard that the metric system originally included new time units, which were quickly dropped because of the difficulty in getting people to use them.
we would be using a "virtual metric format" because we wouldn't be changing the division of the phisycal duration of a day (from exact midnight to exact midnight), we would be changing the division of the "23h:56m virtual day"....
www.halfbakery.com /lr/idea/Metric_20Time   (1037 words)

  
 Metric engineering NASA Modern Relativity modernrelativity special black hole mass energy wormhole time Schwarzschild ...
At some point in a remote observer's time there is the possibility of an arrival of a time traveler from the future who intends to kill his grandfather before his father is conceived.
In that phase of the universe, the time traveler kills his grandfather before his father is conceived and so in that phase of the universe there is no time traveler born to kill his grandfather in this phase of the universe.
The metric tensor gives rise to the affine connections that we interpret as a gravitational field and it also gives rise to the components of the density tensor that we interpret as electric and magnetic fields.
www.geocities.com /zcphysicsms/chap12.htm   (5816 words)

  
 Rod Metric Time   (Site not responding. Last check: 2007-10-09)
Rod Metric Time is too pure to be tainted by simple beer and must have come from a higher source.
Rod Metric Time was adapted and brought to life by the worthy student of Rod Metric Time, Geoff Baskwill.
All times * before Time 0 are nonexistent, and anyone claiming to know anything * about these so-called "negative times" is either insane or attempting * to corrupt your mind.
web.cs.ualberta.ca /~johnb/life_of_476/rodtime.html   (224 words)

  
 What Is Metric Time?
Metric Time (MT) is an attempt to create a decimalized time system for our modern base-10 using world.
Therefore I propose that the base Metric Time unit be called a day and that it be equal to one mean solar day.
For normal time keeping, such as on your watch or in schedules, that unit should be the centiday and it should be labeled with UMT or LMT depending on whether you are expressing the universal or local metric time.
www.you.com.au /news/1026.htm   (2140 words)

  
 A Metric America: "A Decision Whose Time Has Come" - For Real (NISTIR 4858)   (Site not responding. Last check: 2007-10-09)
The Metric Conversion Act of 1975 (amended in 1988) and a 1991 Presidential Executive Order provide both the rationale and the mandate for a transition to the use of metric units.
The amended Metric Conversion Act of 1975 and the 1991 Executive Order provide both the rationale and the mandate for a transition to the use of metric units.
In addition to needing time for metric policies and plans to be implemented in the federal government, visible top-management commitment to the metric transition and leadership are needed.
ts.nist.gov /ts/htdocs/200/202/4858.htm   (2191 words)

  
 Halfbakery: Metric Time
Without time, it's no good measuring anything, because either you never measure it, or you have always measured it.
I once went to the trouble of fitting metric seconds, minutes, hours, days, weeks, months together to make up the standard 365.25 day year, but it's all mental masturbation if you're the only one using it.
I don't care about the number of months in a year, but 1000 metric minutes in day would be convenient for calculations.
www.halfbakery.com /idea/Metric_20Time   (1066 words)

  
 Metric time
Several proposals for metric time systems not based on the second but instead on decimal fractions of an Earth day have been advanced.
True Metric Time uses only a single Metric base time unit, together with multiple and submultiple Metric Prefixes for example: Days, Decidays, Centidays, Millidays, Microsdays.
A prime example of true metric time is Sekants Time, were the day is divided into microdays called Sekants written 000 000, is equivalent to UTC midnight.
www.brainyencyclopedia.com /encyclopedia/m/me/metric_time.html   (308 words)

  
 Hearod.com - Metric Time
This is a neglected part of the Metric System (or SI) which has created a whole measuring system based on 10 for weight, distance, volume, etc., but no official decimalized time units for normal day-to-day use.
This is especially problematic with the metric hour which is almost two and a half times the length of the ABT hour—a significant period of time for a scheduling mishap.
I propose that the base Metric Time unit be called a day and that it be equal to one mean solar day.
www.hearod.com /Metric-Time   (2522 words)

  
 Metric Time - 10 Times Better!   (Site not responding. Last check: 2007-10-09)
Evidence is mounting that the NSW State politicians' now rejected plans to revise the definition of "salary" and by the by increase their superannuation entitlements were not hastily put together over very quick late night sitting.
As scholars put the finishing touches on the new metric system, ordinary Australians can now have a reason to respect the decimal point and learn to use all ten fingers when adding up the cost of three 1.25L bottles of generic brand cola (everybody's favourite alternative paint stripper and bleach).
The various football codes have hung up their tankards, leaving the issue as a perfectly timed one that will thankfully distract us from Mark Taylor's batting average and the correct pronunciation of the phrase El Niño this summer.
www.acay.com.au /~price   (633 words)

  
 metric time?   (Site not responding. Last check: 2007-10-09)
Examples: one millisecond is 10^-3 seconds, and one microsecond is 10^-6 seconds, one nanosecond is 10^-9 seconds, one picosecond is 10^-12 seconds and one femtosecond is 10^-15 seconds (a unit used most often by laser jocks who make pulses of light which only are a couple of wavelengths long).
A day, a week, and a fortnight are unambiguous, if not particularly metric, time units that are not used in physics very much except for contact with people and their schedules.
Since time is useful in arranging our schedules, the number of seconds in a day has to be given a special name.
van.hep.uiuc.edu /van/qa/section/Everything_Else/Measurements/20041128070334.htm   (297 words)

  
 A Guide To Metric Time: Metric Week
Although not a necessary part of Metric Time proper, a Metric Week should also be considered for completeness.
As a week is an artificial time unit, unlike days or years, it is open to change and we should decimalize everything we can.
Although this might require some adjustment to for people not used to starting at zero (but then we are asking them to do that with the Metric Time's 0 hour so why not a little more of the same?) it will be more consistent with the numeral representation of Metric Time.
zapatopi.net /metrictime/week.html   (744 words)

  
 Metric Time System   (Site not responding. Last check: 2007-10-09)
The new metric time will have one hundred secoms (seconds) in a minuto (minute), one hundred minutos in an houris (hour) and, get this, 8.64 houris in a day.
The change to metric time on January 1, 2010, will be a much worse problem.
The federal government has kept the metric time system quiet but it will be forced on all of us.
www.seeya-downtheroad.com /ShortStories/MetricTimeSystem.html   (543 words)

  
 Decimal Time - Home Page
computer time, metric time, the history of decimal time and various decimal time proposals.
Our current civil time is based mostly on the numbers "12" and "60", dating back to the duodecimal and sexagesimal systems used by the ancient Babylonians, instead of the decimal systems of time used in ancient Egypt and China.
It is difficult to make time calculations involving standard units, which is why scientists and computer programmers convert dates and times to decimal time units.
www.decimaltime.hynes.net   (269 words)

  
 Time Conversion Tables from nanoseconds, and quicker, to Light Years
Time is one of the few Imperial or Standard measures still used in the Metric System.
There are proposals for metric time where a day is devided into 10 hours; an hour into 100 minutes; etc. but that is not in general use.
One handy metric link between units to remember is that 1 Litre [1000cc] of pure water weighs 1 kilogram.
www.simetric.co.uk /si_time.htm   (410 words)

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