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Encyclopedia > Orders of magnitude (time)
Orders of
magnitude (time)

in E notation

Planck time
1 E-25 s
1 E-24 s
1 E-21 s
1 E-18 s
1 E-17 s
1 E-16 s
1 E-15 s
1 E-14 s
1 E-13 s
1 E-12 s
1 E-11 s
1 E-10 s
1 E-9 s
1 E-8 s
1 E-7 s
1 E-6 s
1 E-5 s
1 E-4 s
1 E-3 s
1 E-2 s

1 E0 s
1 E1 s
1 E2 s
1 E3 s
1 E4 s
1 E5 s
1 E6 s
1 E7 s
1 E8 s
1 E9 s
1 E10 s
1 E11 s
1 E12 s
1 E13 s
1 E14 s
1 E15 s
1 E16 s
1 E17 s
1 E18 s

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## Contents

An order of magnitude is the class of scale or magnitude of any amount, where each class contains values of a fixed ratio to the class preceding it. ... Categories: Orders of magnitude (area) ... To help compare different orders of magnitude, the following list describes various angular velocity levels between 1Ã—10âˆ’7 radÂ·sâˆ’1 and 1Ã—107 radÂ·sâˆ’1. ... This is a list of orders of magnitude for data (or information), measured in bits. ... Conversion Calculator for Units of Density PICKLES Category: ... To help compare different orders of magnitude, the following list describes various frequencies. ... Categories: | ... To help compare different orders of magnitude, the following list describes various mass levels between 10âˆ’36 kg and 1053 kg. ... This list compares various sizes of positive numbers, including counts of things, dimensionless numbers and probabilities. ... This page lists examples of the power in watts produced by various different sources of energy. ... 1 At earth mean sea level. ... This is a table of specific energy densities by magnitude. ... This is a table of specific heat capacities by magnitude. ... To help compare different orders of magnitude, the following list describes various speed levels between 1. ... Circumstances where water naturally occurs in liquid form are shown in light grey. ... The pages linked in the right-hand column contain lists of volumes that are of the same order of magnitude (power of ten). ... Conversion of units refers to conversion factors between different units of measurement for the same quantity. ... The definition, agreement and practical use of units of measurement have played a crucial role in human endeavour from early ages up to this day. ... Look up si, Si, SI in Wiktionary, the free dictionary. ... The SI system of units defines seven SI base units: physical units defined by an operational definition. ... SI derived units are part of the SI system of measurement units and are derived from the seven SI base units. ... An SI prefix (also known as a metric prefix) is a name or associated symbol that precedes a unit of measure (or its symbol) to form a decimal multiple or submultiple. ... In physics, Planck units are physical units of measurement defined exclusively in terms of the five universal physical constants shown in the table below in such a manner that all of these physical constants take on the numerical value of one when expressed in terms of these units. ...

Orders of magnitude (time)
Factor (s) Multiple Symbol Definition Comparative examples & common units Orders of magnitude
10−44 tP Planck time is the unit of time of the natural units system known as Planck units.[1] The shortest or earliest meaningful interval of time that theoretical physics can describe and consequently the youngest the known universe can be measured. ≈ 5.4×10−44 s. 10−44 s
10−24 1 yoctosecond ys[2] Yoctosecond, (yocto + second), is one quadrillionth (in the long scale) or one septillionth (in the short scale) of a second. 0.3 ys: mean life of the W and Z bosons.[citation needed]
1 ys: time for top quark decay.[citation needed]
91 ys: half-life of lithium-4.[citation needed]
1 ys and less, 10 ys, 100 ys
10−21 1 zeptosecond zs Zeptosecond, (zepto + second), is one trillionth of one billionth of one second. 7 zs: half-life of helium-9's outer neutron in the second nuclear halo.
17 zs: approximate period of electromagnetic radiation at the boundary between gamma rays and X-rays.
300 zs: approximate typical cycle time of X-rays, on the boundary between hard and soft X-rays
1 zs, 10 zs, 100 zs
10−18 1 attosecond 100 attoseconds: shortest measured period of time.[3][4] 1 as, 10 as, 100 as
10−15 1 femtosecond fs cycle time for 390 nanometre light, transition from visible light to ultraviolet 1 fs, 10 fs, 100 fs
10−12 1 picosecond half-life of a bottom quark 1 ps, 10 ps, 100 ps
10−9 1 nanosecond ns 1 ns: Time to execute one instruction in a personal computer
1 ns: Light travels 12 inches (30 cm)
1,000,000,000 nanoseconds: 1 second
1 ns, 10 ns, 100 ns
10−6 1 microsecond µs & µsec sometimes abbreviated as "µs" (from µ and second) or "µsec" 1 µs, 10 µs, 100 µs
10−3 1 millisecond ms blink of an eye ~ 50 to 80 ms 1 ms, 10 ms, 100 ms
100 1 second s 60 s: 1 minute 1 s, 10 s, 100 s
103 1 kilosecond
(16.7 minutes)
ks 3.6 ks: 3600 s or 1 hour
86.4 ks: 86 400 s or 1 day
604.8 ks: 1 week
103 s, 104 s, 105 s
106 1 megasecond
(11.6 days)
Ms month = 2.6 x 106 s
year = 31.6 Ms = 107.50 s ≈ π x 107 s
106 s, 107 s, 108 s
109 1 gigasecond
(32 years)
Gs century = 3.16 Gs ≈ π×109 s
millennium = 31.6 Gs ≈ π×1010 s
109 s, 1010 s, 1011 s
1012 1 terasecond
(32 000 years)
Ts eon = 31.6 Ts ≈ π×1013 s 1012 s, 1013 s, 1014 s
1015 1 petasecond
(32 million years)
aeon = 31.6 Ps ≈ π×1016 s
4.3×1017 s ≈ 13.7 billion years, the approximate age of the universe
1015 s, 1016 s, 1017 s
1018 1 exasecond
(32 billion years)
1018 s, 1019 s, 1020 s
1021 1 zettasecond
(32 trillion years)
1021 s, 1022 s, 1023 s
1024 1 yottasecond
1024 s, 1025 s, 1026 s and more

## Years

Orders of magnitude (time)
Factor (a) Multiple common units orders of magnitude
10−50 Planck time, the shortest physically meaningful interval of time ≈ 1.71×10−50 a 10−50 a
10−24 1 yoctoannum -- 1 ya and less, 10 ya, 100 ya
10−21 1 zeptoannum -- 1 za, 10 za, 100 za
10−18 1 attoannum -- 1 aa, 10 aa, 100 aa
10−15 1 femtoannum -- 1 fa, 10 fa, 100 fa
10−12 1 picoannum -- 1 pa, 10 pa, 100 pa
10−9 1 nanoannum 1 second = 3.17 × 10-8 a ≈ 10-7.50 a 1 na, 10 na, 100 na
10−6 1 microannum 1 minute = 1.90 × 10-6 a
1 hour = 1.40 × 10-4 a
1 ua, 10 ua, 100 ua
10−3 1 milliannum 1 day = 2.73 × 10-3 a
1 week = 1.91 × 10-2 a
1 ma, 10 ma, 100 ma
100 1 annum year = 1 annum
century = 100 anna
1 a, 10 a, 100 a
103 1 kiloannum millennium = 1000 anna 103 a, 104 a, 105 a
106 1 megaannum epoch = 1,000,000 anna 106 a, 107 a, 108 a
109 1 gigaannum aeon = 1,000,000,000 anna
1.37×1010 a ≈ 13.7 billion years, the approximate age of the universe
109 a, 1010 a, 1011 a
1012 1 teraannum --- 1012 a, 1013 a, 1014 a
1015 1 petaannum --- 1015 a, 1016 a, 1017 a
1018 1 exaannum -- 1018 a, 1019 a, 1020 a
1021 1 zettaannum -- 1021 a, 1022 a, 1023 a
1024 1 yottaannum -- 1024 a, 1025 a, 1026 and more

The pages linked in the right-hand column contain lists of times that are of the same order of magnitude (power of ten). Rows in the table represent increasing powers of a thousand (3 orders of magnitude). An order of magnitude is the class of scale or magnitude of any amount, where each class contains values of a fixed ratio to the class preceding it. ... Look up time in Wiktionary, the free dictionary. ... Annum is a Latin noun meaning year. ... An order of magnitude is the class of scale or magnitude of any amount, where each class contains values of a fixed ratio to the class preceding it. ... In physics, the Planck time (tP), is the unit of time in the system of natural units known as Planck units. ... Annum is a Latin noun meaning year. ... An order of magnitude is the class of scale or magnitude of any amount, where each class contains values of a fixed ratio to the class preceding it. ...

Conversion from year to second is year × 31 557 600 using the Julian year. Conversion from log10 year to log10 second is approximately log10 year + 7.50. Example conversion; 1 year = 100 year = 100 + 7.50 seconds = 100.50 + 7s = 3.16 * 107s. Conversion of units refers to conversion factors between different units of measurement for the same quantity. ... A year (from Old English gÄ“r) is the time between two recurrences of an event related to the orbit of the Earth around the Sun. ...

Table of natural history, 1728 Cyclopaedia Natural history is an umbrella term for what are now often viewed as several distinct scientific disciplines of integrative organismal biology. ... The geologic time scale is used by geologists and other scientists to describe the timing and relationships between events that have occurred during the history of the Earth. ... This is a table of time periods and frequencies relevant to human beings. ... A logarithmic timeline, based on logarithmic scale, was developed by Heinz von Foerster, the philosopher and physicist. ... Life on Earth  â€¢  â€¢  | Axis scale: millions of years ago. ... A graphical timeline is available here: Graphical timeline of the Big Bang This box:      This timeline of the Big Bang describes the events that have occurred and will occur according to the scientific theory of the Big Bang, using the cosmological time parameter of comoving coordinates. ... The definition, agreement and practical use of units of measurement have played a crucial role in human endeavour from early ages up to this day. ... In physics, Planck units are physical units of measurement defined exclusively in terms of the five universal physical constants shown in the table below in such a manner that all of these physical constants take on the numerical value of one when expressed in terms of these units. ... This article is about the unit of time. ... Annum is a Latin noun meaning year. ...

Results from FactBites:

 Encyclopedia: Orders of magnitude (time) (2262 words) An order of magnitude is the class of scale or magnitude of any amount, where each class contains values of a fixed ratio to the class preceding it. A yoctosecond is an SI unit of time equal to one septillionth (10-24) of a second. Orders of magnitude (time) The geologic timescale is used by geologists and other scientists to describe the timing and relationships between events that have occured during the history of the Earth.
More results at FactBites »

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