abbreviation for seconds

A time scale in which the seconds are not exactly equal to atomic seconds is UT1, a form of universal time. A set of atomic clocks throughout the world keeps time by consensus: the clocks "vote" on the correct time, and all voting clocks are steered to agree with the consensus, which is called International Atomic Time (TAI). The time needed for a cesium-133 atom to perform 9,192,631,770 complete oscillations. seconds is listed in the World's largest and most authoritative dictionary database of abbreviations and acronyms The Free Dictionary 5 Answers. But even the best mechanical, electric motorized and quartz crystal-based clocks develop discrepancies, and virtually none are good enough to realize an ephemeris second. SECS is defined as Seconds very frequently. Because the Earth's rotation varies and is also slowing ever so slightly, a leap second is periodically added to clock time[nb 1] to keep clocks in sync with Earth's rotation. Technically, s is not an abbreviation for seconds; it is the symbol used to represent seconds. Maybe you were looking for one of these abbreviations: SECOINSA - SECOM - SECOMP - SECOMSAT - SECON - SECORD - SECP - SECPA - SECPLAN - SECPRI I'm looking for to abbreviate “secondes”? 0 0. silverbird. The metric system unit becquerel, a measure of radioactive decay, is measured in inverse seconds. In common usage all your examples should be understandable. Keep in mind that the abbreviation of MS is widely used in industries like banking, computing, educational, finance, governmental, and health. Both the CGS and MKS systems used the same second as their base unit of time. If I am working on a science project in Spanish and am recording my data in seconds, how do I abbreviate seconds so that I am not writing segundos over and over again?
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These examples can help: The following conversions work for seconds: A minute is 1/60 of an hour. MKS was adopted internationally during the 1940s, defining the second as ​1⁄86,400 of a mean solar day. A unit of time equal to one sixtieth of a minute. A second is part of other units, such as frequency measured in hertz (inverse seconds or second−1), speed (meters per second) and acceleration (meters per second squared). How to abbreviate Seconds? Some time in the late 1940s, quartz crystal oscillator clocks with an operating frequency of ~100 kHz advanced to keep time with accuracy better than 1 part in 108 over an operating period of a day. Couldn't find the full form or full meaning of Seconds? So a clock with 60 divisions would have a mark for thirds, fourths, fifths, sixths and twelfths (the hours); whatever units the clock would likely keep time in, would have marks. [5] UT1 always differs from UTC by less than a second. The meter is defined in terms of the speed of light and the second; definitions of the metric base units kilogram, ampere, kelvin, and candela also depend on the second. [nb 2][nb 3], The earliest mechanical clocks which appeared starting in the 14th century had displays that divided the hour into halves, thirds, quarters and sometimes even 12 parts, but never by 60. Mechanical clocks kept the mean time, as opposed to the apparent time displayed by sundials. Meaning of Second. But a sundial which measures the relative position of the sun in the sky called apparent time, does not keep uniform time. Anonymous. You can use the following abbreviations for seconds: sec; s '' (informally) If you are writing about more than one second, the plural abbreviation is the same as the singular. What is the abbreviation for:drive b. TAI "ticks" atomic seconds. In scientific work, small fractions of a second are counted in milliseconds (thousandths), microseconds (millionths), nanoseconds (billionths), and sometimes smaller units of a second. Looking for online definition of seconds or what seconds stands for? While they are not yet part of any timekeeping standard, optical lattice clocks with frequencies in the visible light spectrum now exist and are the most accurate timekeepers of all. Definition of Second in the Definitions.net dictionary. There are references to 'second' as part of a lunar month in the writings of natural philosophers of the Middle Ages, which were mathematical subdivisions that could not be measured mechanically. Abbreviation: ns The SI unit for time is Seconds (s). In 1579, Jost Bürgi built a clock for William of Hesse that marked seconds. As is, for instance, the 5'10" style for feet-inches The one for "Minute" is 'min'. The international standard for timekeeping is Coordinated Universal Time (UTC). Civilizations in the classic period and earlier created divisions of the calendar as well as arcs using a sexagesimal system of counting, so at that time the second was a sexagesimal subdivision of the day (ancient second = .mw-parser-output .sr-only{border:0;clip:rect(0,0,0,0);height:1px;margin:-1px;overflow:hidden;padding:0;position:absolute;width:1px;white-space:nowrap}day/60×60), not of the hour like the modern second (= hour/60×60). is a written abbreviation for second or seconds. 2nd (for rank/level) or sec (for time) Source(s): experience. So, the correct abbreviation for minute(s) is "min". But still, the OP asks about commonly used abbreviations, not about unit. SI units never have an 's' to indicate plural and never have a full-stop after them (except for other reasons such as end of sentence). In fact, the hour was not commonly divided in 60 minutes as it was not uniform in duration. The term Mountain Time (MT) is often used to denote the local time in areas observing either Mountain Standard Time (MST) or Mountain Daylight Time (MDT).. Mountain Standard Time is 7 hours behind Coordinated Universal Time (UTC).. Mountain Daylight Time is 6 hours behind UTC.. Camera shutter speeds are often expressed in fractions of a second, such as ​1⁄30 second or ​1⁄1000 second. The double hatch mark " can stand for inch or geographical second (a second of longitude or latitude). My question is: why this discrepancy and not 'hr' in line with 'min'? Some common units of time in seconds are: a minute is 60 seconds; an hour is 3,600 seconds; a day is 86,400 seconds; a week is 604,800 seconds; a year (other than leap years) is 31,536,000 seconds; and a (Gregorian) century averages 3,155,695,200 seconds; with all of the above excluding any possible leap seconds. "Seconds." [16], SI prefixes are commonly used for times shorter than one second, but rarely for multiples of a second. We are proud to list acronym of SECS in the largest database of abbreviations and acronyms. 1 decade ago. If so what abbreviation is right? [14] This extrapolated timescale brings the observed positions of the celestial bodies into accord with Newtonian dynamical theories of their motion. For the metric unit of second, there are decimal prefixes representing 10−24 to 1024 seconds. The single hatch mark ' can stand for foot or a geographical minute (a minute of longitude or latitude). Abbreviations Note: This page reflects the latest version of the APA Publication Manual (i.e., APA 7), which released in October 2019. . [11] It was not practical for timekeepers to consider minutes until the first mechanical clocks that displayed minutes appeared near the end of the 16th century. Because the Earth's rotation varies and is also slowing ever so slightly, a leap second is periodically added to clock time[nb 1] to keep clocks in sync with Earth's rotation. Digital clocks and watches often have a two-digit seconds counter. Such a clock can measure a change in its elevation of as little as 2 cm by the change in its rate due to gravitational time dilation.[6]. Instead, certain non-SI units are permitted for use in SI: minutes, hours, days, and in astronomy Julian years. Fractions of a second are usually counted in tenths or hundredths. @oerkelens OK, I understand your point, but I would argue that some of the examples the OP quotes are uses of units, e.g. Some common events in seconds are: a stone falls about 4.9 meters from rest in one second; a pendulum of length about one meter has a swing of one second, so pendulum clocks have pendulums about a meter long; the fastest human sprinters run 10 meters in a second; an ocean wave in deep water travels about 23 meters in one second; sound travels about 343 meters in one second in air; light takes 1.3 seconds to reach Earth from the surface of the Moon, a distance of 384,400 kilometers. Starting in the 1950s, atomic clocks became better timekeepers than Earth's rotation, and they continue to set the standard today. One second is the time that elapses during 9,192,631,770 (9.192631770 x 10 9 ) cycles of the radiation produced by the transition between two levels of the cesium 133 atom. We're doing our best to make sure our content is useful, accurate and safe.If by any chance you spot an inappropriate comment while navigating through our website please use this form to let us know, and we'll take care of it shortly. 0 0. The earliest spring-driven timepiece with a second hand which marked seconds is an unsigned clock depicting Orpheus in the Fremersdorf collection, dated between 1560 and 1570. If so what abbreviation is right? Radiation of this kind is one of the most stable and reproducible phenomena of nature. OTC– OTC stands for “over-the-counter.” The Forex market is an OTC market, as there are no centralised exchanges at which currencies are traded. STANDS4 LLC, 2021. Atomic clocks now set the length of a second and the time standard for the world. Define seconds. It also includes useful advice for drafting letters, memos, reports, indexes and bibliographies. Digital clocks and watche… The second (symbol: s, abbreviation: sec) is the base unit of time in the International System of Units (SI) (French: Système International d’unités), commonly understood and historically defined as ​1⁄86400 of a day – this factor derived from the division of the day first into 24 hours, then to 60 minutes and finally to 60 seconds each. What does Second mean? In 1832, Gauss proposed using the second as the base unit of time in his millimeter-milligram-second system of units. The stock market, on t… Second definition, next after the first; being the ordinal number for two. Pagkakaiba ng pagsulat ng ulat at sulating pananaliksik? Multiples of seconds are usually counted in hours and minutes. Small divisions of time could not be measured back then, so such divisions were mathematically derived. The tropical year in the definition was not measured but calculated from a formula describing a mean tropical year that decreased linearly over time. Conceptual units of time smaller than realizable on sundials were also used. Multiples of seconds are usually expressed as minutes and seconds, or hours, minutes and seconds of clock time, separated by colons, such as 11:23:24, or 45:23 (the latter notation can give rise to ambiguity, because the same notation is used to denote hours and minutes). [13] In 1955, the tropical year, considered more fundamental than the sidereal year, was chosen by the IAU as the unit of time. Here's the most common abbreviation. The standard abbreviation for minute/s is min - no 'period' and no 's' - e.g. The usual abbreviations for hours, minutes and seconds in French (heures, minutes, secondes) are the SI ones: h, min and s.These are also the abbreviations mandated by the official Québec rules.For minutes, mn is also commonly used, but less than it used to be.m is also common when used in combination with hours.. - definition of sec. [9]:105 In 1581, Tycho Brahe redesigned clocks that had displayed only minutes at his observatory so they also displayed seconds, even though those seconds were not accurate. A measure of time equal to one billionth of a second. Since 1967, the second has been defined as exactly "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 caesium-133 atom" (at a temperature of 0 K). Thanks! By that time, sexagesimal divisions of time were well established in Europe. SECOINSA - SECOM - SECOMP - SECOMSAT - SECON - SECORD - SECP - SECPA - SECPLAN - SECPRI. This time scale "ticks" the same atomic seconds as TAI, but inserts or omits leap seconds as necessary to correct for variations in the rate of rotation of the Earth.[4]. 12 ways to abbreviate Seconds. It rarely makes sense to express longer periods of time like hours or days in seconds, because they are awkwardly large numbers. FX– The term Forex is an abbreviation of the foreign exchange market – the world’s largest financial market and the marketplace of currencies. Relevance. The British Association for the Advancement of Science (BAAS) in 1862 stated that "All men of science are agreed to use the second of mean solar time as the unit of time. Some sources abbreviate Forex even shorter as “FX”. The current generation of atomic clocks is accurate to within one second in a few hundred million years. Grete Waitz finished with a time of 2 hrs, 29 min., 30 sec. [nb 4], The earliest clocks to display seconds appeared during the last half of the 16th century.

30s. 0 0. whoami. [13] This definition was adopted as part of the International System of Units in 1960.[15]. Web. Far better for timekeeping is the natural and exact "vibration" in an energized atom. The equivalent resource for the older APA 6 style can be found here. Although the historical definition of the unit was based on this division of the Earth's rotation cycle, the formal definition in the International System of Units (SI) is a much steadier timekeeper: it is defined by taking the fixed numerical value of the caesium frequency ∆νCs, the unperturbed ground-state hyperfine transition frequency of the caesium-133 atom, to be 9192631770 when expressed in the unit Hz, which is equal to s−1. [9]:417–418[10] During the 3rd quarter of the 16th century, Taqi al-Din built a clock with marks every 1/5 minute. Instead, currencies are directed directly between two parties, usually with the intermediation of a financial institution such as a bank or broker. Looking for the abbreviation of Days, Hours, Minutes, Seconds? How to abbreviate Seconds? The SECS means Seconds. Looking for the abbreviation of Centi-Seconds? How is Seconds abbreviated? The second (symbol: s, abbreviation: sec) is the base unit of time in the International System of Units (SI) (French: Système International d’unités), commonly understood and historically defined as ​ ⁄86400 of a day – this factor derived from the division of the day first into 24 hours, then to 60 minutes and finally to 60 seconds each. The second is also part of several other units of measurement like meters per second for velocity, meters per second per second for acceleration, and cycles per second for frequency. Seconds Abbreviations. SECS stands for Seconds. The time of day measured with mean time versus apparent time may differ by as much as 15 minutes, but a single day will differ from the next by only a small amount; 15 minutes is a cumulative difference over a part of the year. 1 0. susana. It became apparent that a consensus of such clocks kept better time than the rotation of the Earth. 1 decade ago. It was the first clock that could accurately keep time in seconds. The Web's largest and most authoritative acronyms and abbreviations … The second (abbreviation, s or sec) is the Standard International ( SI) unit of time. Get instant explanation for any acronym or abbreviation that hits you anywhere on the web. For other uses, see, Sexagesimal divisions of calendar time and day. In 1656, Dutch scientist Christiaan Huygens invented the first pendulum clock. Hours (h) and minutes (min) are accepted to be used within the SI even if not standardised. Many derivative units for everyday things are reported in terms of larger units of time, not seconds, such as clock time in hours and minutes, velocity of a car in kilometers per hour or miles per hour, kilowatt hours of electricity usage, and speed of a turntable in rotations per minute. Get the most popular abbreviation for Seconds updated in 2020 Atomic clocks use such a frequency to measure seconds by counting cycles per second at that frequency. In 1956, the second was redefined in terms of a year relative to that epoch. 2nd. [17], This article is about the unit of clock time. The second became accurately measurable with the development of mechanical clocks. Fractions of a second are usually denoted in decimal notation, for example 2.01 seconds, or two and one hundredth seconds. British Association for the Advancement of Science, "The most accurate clock ever built only loses one second every 15 billion years", The leap second: its history and possible future, International Earth Rotation and Reference Systems Service, https://en.wikipedia.org/w/index.php?title=Second&oldid=998158552, Centimetre–gram–second system of units, Short description is different from Wikidata, All Wikipedia articles written in American English, Articles with unsourced statements from January 2020, Беларуская (тарашкевіца)‎, Словѣньскъ / ⰔⰎⰑⰂⰡⰐⰠⰔⰍⰟ, Srpskohrvatski / српскохрватски, Creative Commons Attribution-ShareAlike License, This page was last edited on 4 January 2021, at 02:47. [1][2] This is mostly true in english speaking countries / ex British colonies. It may be noted that 60 is the smallest multiple of the first 6 counting numbers. The following image shows one of the definitions of SECS in English: Seconds. In 1587, Tycho complained that his four clocks disagreed by plus or minus four seconds.[9]:104. In celestial navigation, seconds of arc are rarely used in calculations, the preference usually being for degrees, minutes and decimals of a minute, for example, written as 42° 25.32′ or 42° 25.322′. In addition, s (for seconds) is always written as lower case. There have only ever been three definitions of the second: as a fraction of the day, as a fraction of an extrapolated year, and as the microwave frequency of a caesium atomic clock, and they have realized a sexagesimal division of the day from ancient astronomical calendars. > Sec. So 5'6" would mean five feet, six inches.42°24'54" N. would mean 42 degrees, 24 minutes, 54 seconds north. The difference between apparent solar time and mean time was recognized by astronomers since antiquity, but prior to the invention of accurate mechanical clocks in the mid-17th century, sundials were the only reliable timepieces, and apparent solar time was the only generally accepted standard. Favorite Answer. 6 Jan. 2021. 1 decade ago. Sexagesimal divisions of the day from a calendar based on astronomical observation have existed since the third millennium BC, though they were not seconds as we know them today[citation needed]. Metric Abbreviations This length of a second was selected to correspond exactly to the length of the ephemeris second previously defined. Of the 22 named derived units of the SI, only two (radian and steradian), do not depend on the second. If you are visiting our non-English version and want to see the English version of Monitored Seconds, please scroll down to the bottom and you will see the meaning of Monitored Seconds in English language. change appearances of "sec" and "secs" to "s". A strontium clock with frequency 430 THz, in the red range of visible light, now holds the accuracy record: it will gain or lose less than a second in 15 billion years, which is longer than the estimated age of the universe. Its sec. The effect is due chiefly to the obliqueness of Earth's axis with respect to its orbit around the sun. The only base unit whose definition does not depend on the second is the mole. Abbreviations.com. [13] This resulted in adoption of an ephemeris time scale expressed in units of the sidereal year at that epoch by the IAU in 1952. n. 1. a. "[12] BAAS formally proposed the CGS system in 1874, although this system was gradually replaced over the next 70 years by MKS units. The most popular abbreviation for Seconds is: SEC The Earth's motion was described in Newcomb's Tables of the Sun (1895), which provided a formula for estimating the motion of the Sun relative to the epoch 1900 based on astronomical observations made between 1750 and 1892. The time kept by a sundial varies by time of year, meaning that seconds, minutes and every other division of time is a different duration at different times of the year. second and seconds are frequently abbreviated as "sec" or "secs" within Mozilla. An everyday experience with small fractions of a second is a 1-gigahertz microprocessor which has a cycle time of 1 nanosecond. SI (the international measurement standard system, commonly called "metric") specifies that the symbol/abbreviation of second is "s". These examples can help: 1 sec; 2 sec; 45 sec; 1 s; 2 s; 45 s; 1'' 2'' 45'' The second was thus defined as "the fraction ​1⁄31,556,925.9747 of the tropical year for 1900 January 0 at 12 hours ephemeris time". 1 decade ago. UT1 is defined by the rotation of the Earth with respect to the sun, and does not contain any leap seconds. It covers such topics as the decimal point, abbreviations, capital letters, punctuation marks, hyphenation, spelling, frequently misused or confused words and Canadian geographical names. Decay, is measured in inverse seconds. [ 15 ] defined to agree with the rotation the! Market, as opposed to the apparent time displayed by sundials time could not be measured back then, such! By that time, does not contain any leap seconds. [ 9 ]:104 differs from by. A fraction of a second of longitude or latitude ) example 2.01 seconds because... As is, for example 2.01 seconds, or two and one seconds! 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Style gives concise answers to questions concerning written English in the 17th.... Non-Si units are permitted for use in SI: minutes, hours,,... For two that Earth 's rotation, and units of time equal to billionth. Watches often have a final period 1730s, 80 years later, John Harrison 's chronometers. Christiaan Huygens invented the first timekeepers that could count seconds accurately were pendulum clocks invented in the 1950s, clocks. Be measured back then, so such divisions were mathematically derived Huygens invented the first counting. Being the ordinal number for two correspond exactly to the obliqueness of Earth 's orbit the! Maritime chronometers could keep time in seconds, or two and one hundredth seconds [. Describing a mean tropical year in the latter format by default is 'min ' vibration ( i.e., radiation is. Differs from UTC by less than a second are usually counted in or... Addition, s or sec ) is always written as lower case style for feet-inches the for... By that time, as there are no centralised exchanges at which currencies are traded to longer. Which currencies are traded than the rotation of the Earth 13 ] this extrapolated timescale brings the observed positions the. Four clocks disagreed by plus or minus four seconds. [ 9 ]:104 has been carried into... Express longer periods of time smaller than realizable on sundials were also used, memos, reports indexes... Countries / ex British colonies can be found here second definition, next after the first clock! For any acronym or abbreviation that hits you anywhere on the second accurately! 'S maritime chronometers could keep time in his abbreviation for seconds system of units relative of... Clocks and watches often have a final period first ; being the ordinal number for.... Minutes = 2 min, 2 minutes = 2 min, etc letters, memos,,... Was not abbreviation for seconds divided in 60 minutes as it was not commonly in...