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seco-second of arc
second
SI base unit of time (symbol: Math - text). The second is the duration of 9 192 631 770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the caesium-133 atom.
Source:
Green Book, p. 70
PAC, 1996, 68, 957 (Glossary of terms in quantities and units in Clinical Chemistry (IUPAC-IFCC Recommendations 1996)) on page 991
Related index:
IUPAC > Gold Book > math/physics > units
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Cite as: IUPAC Compendium of Chemical Terminology, Electronic version, http://goldbook.iupac.org/S05513.html.
Transformed and rewritten from PDF version (entry http://www.iupac.org/goldbook/S05513.pdf)
by: Miloslav Nic, Jiri Jirat, Bedrich Kosata, ICT Prague, Czech Republic
Version for print | History of this term
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