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second duration (SecondDuration)

SI TimeDuration. Symbol: s. It is one of the base units in SI, and it is currently defined as follows: the SecondDuration is the duration of 9192631770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the cesium 133 atom.

Ontology

SUMO / UNITS-OF-MEASURE

Class(es)

systeme international unit
is instance of
  second duration  

Superclass(es)

[tree]
entity
is subclass of
  abstract  
is subclass of
  quantity  
is subclass of
  physical quantity  
is subclass of
  constant quantity  
is subclass of
  time measure  
is subclass of
  time duration  
is subclass of
  second duration  

Coordinate term(s)

ampere  becquerel  candela  celsius degree  coulomb  day duration  farad  gram  gray  henry  hertz  hour duration  joule  kelvin degree  lumen  lux  meter  minute duration  mole  newton  ohm  pascal  radian  siemens  sievert  steradian  tesla  volt  watt  weber  week duration  year duration 

Related WordNet synsets

second, sec, s
1/60 of a minute; the basic unit of time adopted under the System International d'Unites
second is kind of (all)...   second is kind of...   kinds of second...   kinds of second (all)...   second is part of...   parts of second...  
See more related synsets on a separate page.

Axioms (3)

If number is an instance of real number, then "number minute duration(s)" is equal to ""number*" second duration(s)". 
(=>
      (instance ?NUMBER RealNumber)
      (equal
            (MeasureFn ?NUMBER MinuteDuration)
            (MeasureFn
                  (MultiplicationFn ?NUMBER 60)
                  SecondDuration)))
second is internally related to second duration. 
(relatedInternalConcept Second SecondDuration)
If second is an instance of second, then duration of second is " second duration(s)". 
(=>
      (instance ?SECOND Second)
      (duration
            ?SECOND
            (MeasureFn 1 SecondDuration)))