铯
caesium (cesium)
- Pinyin
- sè
- Strokes
- 11
- In episodes
- 1
Stroke order for 铯
铯 is written with 11 strokes. The animation replays automatically.
Usage
The atom the SI second has been defined by since 1967.
Hear 铯 in real episodes
铯 appears in 1 Fluentide podcast episode at natural native speed. Each sentence plays at the easiest difficulty it exists in — switch it to hear the same moment at your level, with full pinyin and English throughout.
传统的原子钟，数的是铯原子在微波频段的振动，每秒大约九十亿次。
Traditional atomic clocks count the vibrations of caesium atoms in the microwave band — about nine billion times a second.
Jun Ye's Atomic Clock Won't Lose a Second in 15 Billion Years. Now He Has Won the Wolf Prize, Often a Step Before the Nobel.Advanced
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