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VizantOr*
Apr 8, 2007, 1:07:29 PM4/8/07
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The second is the duration of 9192631770 periods of the radiation
corresponding to the transition between the two hyperfine levels (F = 4,
mF = 0 to F = 3, mF = 0) of the ground state of the cesium 133 atom [13th
CGPM (1967)]. http://milenic.up.to
corresponding to the transition between the two hyperfine levels (F = 4,
mF = 0 to F = 3, mF = 0) of the ground state of the cesium 133 atom [13th
CGPM (1967)]. http://milenic.up.to
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