The 1 E13 s reference article from the English Wikipedia on 24-Jul-2004 (provided by Fixed Reference: snapshots of Wikipedia from wikipedia.org)

1 E13 s

To help compare orders of magnitude of different times this page lists times between 320 000 years and 3 200 000 years (10¹³ seconds and 10¹⁴ seconds) See also times of other orders of magnitude.

• Shorter times
• 340,000 years -- half-life of curium-248
• ~600,000 years -- time humans have been able to produce the sounds of spoken languages
• ~700,000 years -- time since last reversal of earth's magnetic field
• 1,000,000 years -- the average lifespan of a blue supergiant star
• 1,500,000 years -- time since beginning of Pleistocene Epoch (beginning of Quaternary Period)
• 1,500,000 years -- time since end of Pliocene Epoch (end of Tertiary Period)
• 1,530,000 years -- half-life of zirconium-93
• 2,600,000 years -- half-life of technetium-97
• Longer times

This is the "1 E13 s" reference article from the English Wikipedia. All text is available under the terms of the GNU Free Documentation License. See also our Disclaimer.