Orders of magnitude (time)

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 It has been suggested that this article or section be merged with 1 E-25 s, 1 E-24 s, 1 E-21 s, 1 E-18 s, 1 E-15 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, Millisecond, 1 E-2 s, 1 E-1 s, 1 E0 s and 1 E1 s to form Time. (Discuss)
It has been suggested that this article or section be merged with 1 E2 s, Kilosecond, 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, 1 E19 s and more, Orders of magnitude (time) and second to form Time. (Discuss)
Orders of magnitude
area
angular velocity
currency
data
density
energy
frequency
length
mass
numbers
power
pressure
specific energy density
specific heat capacity
speed
temperature
time
volume
Conversion of units
physical unit
SI
SI base unit
SI derived unit
SI prefix
Planck units


Contents

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Please improve this article if you can. (December 2007)
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 measurable 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
(32 quadrillion years)		 -- 1024 s, 1025 s, 1026 s and more
 v • d • e Orders of magnitude (time), by powers of seconds
Negative powers 10−44 s | ... | 10−25 s | 10−24 s ... 10−22 s | 10−21 s ... 10−19 s | 10−18 s ... 10−16 s | 10−15 s ... 10−13 s | 10−12 s | 10−11 s | 10−10 s | 10−9 s | 10−8 s | 10−7 s | 10−6 s | 10−5 s | 10−4 s | 10−3 s | 10−2 s | 10−1 s
Positive powers 1 s | 10 s | 102 s | 103 s | 104 s | 105 s | 106 s | 107 s | 108 s | 109 s | 1010 s | 1011 s | 1012 s | 1013 s |1014 s | 1015 s | 1016 s | 1017 s | 1018 s | 1019 s and more

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
decade = 10 anna
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).

Conversion from year to second is year × 31 557 600 using the Julian year. Conversion from log10year to log10second is approximately log10year + 7.50. Example conversion; 1year = 100year = 100 + 7.50seconds = 100.50 + 7s = 3.16 * 107s.

  1. ^ Wikipedia contributors. Planck time. Wikipedia, The Free Encyclopedia. December 7, 2007, 05:55 UTC. Available at: http://en.wikipedia.org/w/index.php?title=Planck_time&oldid=176315682. Accessed December 19, 2007.
  2. ^ The American Heritage® Dictionary of the English Language: Fourth Edition. 2000. Available at: http://www.bartleby.com/61/21/Y0022100.html. Accessed December 19, 2007. note: abbr. ys or ysec
  3. ^ Shortest time interval measured. BBC News (25 February 2004).
  4. ^ Fastest view of molecular motion. BBC News (4 March 2006).
Retrieved from "http://en.wikipedia.org/wiki/Orders_of_magnitude_%28time%29"
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