1 E-18 s

Encyclopedia : 1 : 1E : 1E1 : 1 E-18 s

To help compare orders of magnitude of different times this page lists times between 10⁻¹⁸ seconds and 10⁻¹⁵ seconds (1 attosecond and 1 femtosecond) See also times of other orders of magnitude.

The word attosecond originates from the Nordic word for eighteen (atten).

shorter times
1 attosecond – estimated time it takes for an atomic nucleus to recoil
about 100 as – record for shortest time interval measured as of February 2004 [(BBC News)]
about 200 as – half-life of beryllium-8 which is important for stellar nucleosynthesis
250 as – the shortest pulses of laser light yet created (2002)
320 as – estimated time it takes electrons to hop between atoms
longer times

Orders of magnitude (time), by powers of seconds
Negative powers	10^-44 s \| ... \| 10^-25 s \| 10^-24 s \| 10^-23 s \| 10^-22 s \| 10^-21 s \| 10^-20 s \| 10^-19 s \| 10^-18 s \| 10^-17 s \| 10^-16 s \| 10^-15 s \| 10^-14 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

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