 | 1977 - 668 pàgines
...of the International System of Units is the second, defined In the following terms: "The second Is the duration of 9,192,631,770 periods of the radiation...transition between the two hyperfine levels of the fundamental state of the atom of cesium 133." 90-057—77-12 (111) Temperature: The "kelvln," the unit... | |
 | 1970 - 502 pàgines
...of the International System of Units is the second, defined in the following terms: "The second is the duration of 9,192,631,770 periods of the radiation...transition between the two hyperfine levels of the fundamental state of the atom of cesium 133." (iii) Temperature: The "kelvin," the unit of thermodynamlc... | |
 | 1980 - 1442 pàgines
...Units is the second, defined in the following terms: "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 fundamental state of the atom of cesium 133." (iii) Temperature: The "kelvin," the unit of thermodynamic... | |
 | 1971 - 642 pàgines
[ El contingut d’aquesta pàgina està restringit ] | |
 | 1984 - 900 pàgines
[ El contingut d’aquesta pàgina està restringit ] | |
 | 1977 - 650 pàgines
...element or "natural pendulum" has been the cesium atom. One second is defined in the official wording as "the duration of 9,192,631,770 periods of the radiation...the two hyperfine levels of the ground state of the cesium-133 atom." Accordingly, the frequency of the cesium pendulum is 9,192,631,770 events per second... | |
 | 1977 - 832 pàgines
[ El contingut d’aquesta pàgina està restringit ] | |
 | 1995 - 174 pàgines
[ El contingut d’aquesta pàgina està restringit ] | |
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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 cesium- 133 atom (13th CGPM, 1967). 
