ATTOPARSEC
\ɐtˈɒpɑːsˌɛk], \ɐtˈɒpɑːsˌɛk], \ɐ_t_ˈɒ_p_ɑː_s_ˌɛ_k]\
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About 31 mm (one inch). "atto-" is thestandard SI prefix for multiplication by 10^-18. A parsec(parallax-second) is 3.26 light-years; an attoparsec is thus3.26 * 10^-18 light years. Thus, one attoparsec permicrofortnight is about one inch per second.This unit is reported to be in use (though probably not veryseriously) among hackers in the UK.
By Denis Howe
Word of the day
Dopamine Acetyltransferase
- An enzyme that catalyzes the of groups from acetyl-CoA to arylamines. They have wide specificity for aromatic amines, particularly serotonin, and can also catalyze acetyl transfer between arylamines without CoA. EC 2.3.1.5.