Last Updated
：2025/11/25
cosmochronometer
Noun
Japanese Meaning
天体や宇宙物体の年齢を決定するために用いられる放射性崩壊などのプロセスや手法 / 宇宙の年代測定に利用される物理的現象や方法
（ plural ）
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(physics, astronomy) Any process (such as forms of radioactive decay) that may be used to determine the age of an astronomical object.
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cosmochronometer
To determine the formation time of the ancient star cluster, astronomers applied a cosmochronometer based on uranium-lead decay.
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To determine the formation time of the ancient star cluster, astronomers applied a cosmochronometer based on uranium-lead decay.
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