caesium 133
The caesium standard is a primary frequency standard in which the photon absorption by transitions between the two hyperfine ground states of caesium-133 ... ,isotope of caesium. ... No description defined. Traditional Chinese. 銫133. No description defined. Chinese. No label defined. No description defined. All entered ...
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 caesium 133 相關參考資料
Caesium - Wikipedia
Caesium (IUPAC spelling) is a chemical element with the symbol Cs and atomic number 55. .... The only stable caesium isotope is 133Cs, with 78 neutrons. https://en.wikipedia.org Caesium standard - Wikipedia
The caesium standard is a primary frequency standard in which the photon absorption by transitions between the two hyperfine ground states of caesium-133 ... https://en.wikipedia.org caesium-133 - Wikidata
isotope of caesium. ... No description defined. Traditional Chinese. 銫133. No description defined. Chinese. No label defined. No description defined. All entered ... https://www.wikidata.org Cesium-133 | radioisotope | Britannica
Other articles where Cesium-133 is discussed: quantum mechanics: Cesium clock: …the ground state of the cesium-133 atom. Prior to 1967, the second was ... https://www.britannica.com How Does a Practical Cesium Atomic Clock Work? - How ...
Cesium 133 is the element most commonly chosen for atomic clocks. ... by locking a crystal oscillator to the principal microwave resonance of the cesium atom. https://science.howstuffworks. How does one arrive at the exact number of cycles of radiation ...
When the cesium second was defined in 1967, it was based on a measurement of the number of cycles of the radiation from a particular cesium-133 transition ... https://www.scientificamerican Isotopes of caesium - Wikipedia
跳到 Caesium-133 - Caesium-133 is the only stable isotope of caesium. The SI base unit the second is defined by a specific caesium-133 ... https://en.wikipedia.org 銫- 維基百科，自由的百科全書 - Wikipedia
銫（Caesium或Cesium，舊譯作鏭）是一種化學元素，化學符號為Cs，原子序為55。 .... 然而，銫僅有唯一的穩定同位素，也就是具有78個中子的銫-133（133Cs）。 https://zh.wikipedia.org 銫的同位素- 维基百科，自由的百科全书
銫（原子量：132.9054519(2)）銫有40個已知的同位素，連同鋇與汞是擁有最多同位素的元素。目前已知的銫同位素原子量範圍從112到151，其中只有銫-133是穩定的。 ..... 133Cs, 55, 78, 132.905451933(24), 稳定, 7/2+, 1.0000. 134Cs, 55, 79 ... https://zh.wikipedia.org |