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cepheids
US
・UK
A1 初級
n. pl.名詞 (複數)造父變星
影片字幕
我們如何找到地球在銀河系中的位置 (How We Found Earth's Location in the Milky Way)
- Brighter Cepheids pulsed more slowly than their counterparts.
亮度更高的倒灶星的脈衝速度比同類星更慢。
- This simple yet profound relationship, now known as Leavitt's Law, allowed astronomers to determine the distance to Cepheids by simply measuring their pulsation period.
這種簡單而深刻的關係現在被稱為 "萊維特定律"，它使天文學家能夠通過測量仙王座的脈動週期來確定其距離。