recession velocity 中文意思是什麼
recession velocity
解釋
退水流速-
Astronomers can deduce the recession velocity of a supernova by measuring the redshift of the light from the galaxy in which it lies
天文學家得知超新星與我們遠離速率的方法,主要是透過其所屬星系的紅移來判定。 -
Having a recession velocity greater than the speed of light does not violate special relativity
具有比光速快的遠離速度,並沒有違反狹義相對論。 -
The velocity in hubble ' s law is a recession velocity caused by the expansion of space, not a motion through space
而哈伯定律中所謂的速度,是由空間膨脹所導致的遠離速度,並不是在空間中的運動。 -
Or, to put it another way, a galaxy with a given recession velocity will be farther away than expected ? and hence fainter ? if the universe is accelerating [ see bottom illustration on opposite page ]
換句話說,若宇宙是在加速膨脹,那麼具有某一給定遠離速率星系的位置,便會比預期中更遠,因而更顯晦黯(請見右頁圖) 。
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