| Change log entry 54523 | |
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| Processed by: | goldyn_chyld (2014-07-29 09:38:56 UTC) |
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<< review queue entry 52212 - submitted by 'goldyn_chyld' >> XHC: 人在地球上所看到的恒星的亮度，视亮度并不是恒星真正的亮度。 本研究主要采用闪烁光度法得到四个亮度级上的相对视亮度曲线。 This work was undertaken by using the flicker method and JND Technique. 这些天体的视亮度可以得到距离，它们的红移可以得出速度。 The object's apparent brightness yields the distance; its redshift yields the velocity. 这些超新星有着一致的本征亮度，因此测出它们的视亮度，天文学家就知道它们离我们有多远。 The supernovae glow with the same intrinsic brightness, so by measuring how bright they appear on the sky, astronomers can tell how far away they are. |
| Diff: |
+ 視亮度 视亮度 [shi4 liang4 du4] /apparent brightness (astronomy)/ |