Definitions Edit

A second is "[a]n angle equal to one sixtieth of a minute of latitude or longitude.[1]

A second is

[t]he SI unit of time, one of the seven SI base units. The second is equal to 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 cesium-133 atom. . . . The symbol for second, the SI unit of time, is s.[2]

References Edit

  1., GIS Glossary (full-text).
  2. Framework for Cyber-Physical Systems, at 16.

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