Ontology
Label: second
Definition:
"A time unit which 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 caesium 133 atom." [BIPM:BIPM, NIST:NIST]Back to the super classes:
Definition:
"A unit which is one of a particular measure to which all measures of that type can be related." [NIST:NIST]
No description found.