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abstraction > mathematical concept > number > constant > unit prefix > atto
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atto
(a)
subjectfact 
attohas symbol a2001-09-27 09:32:58.0
has value 10-182001-09-27 09:32:58.0
is an instance of unit prefixhas source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:32:58.0
unit prefixhas rule
  1. multiple prefixes may not be used
  2. any unit prefix can be used with any SI unit
2001-09-27 09:32:57.0