Details of Unit: second

Unit Name second
Unit Symbols
Defining Expression 1.0 s
Simplified Expression 1.0 s
Unit CatagorySI Base
Unit Reference Information
Second is the SI base unit for the time. Official definition for a second per BIPM  is
" 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."
External Reference Links
  1. http://www.bipm.fr/en/si/si_brochure/chapter2/2-1/second.html
  2. http://physics.nist.gov/cuu/index.html
  3. http://en.wikipedia.org/wiki/Second

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