第113期: Redshift 红移
日期:2023-05-08 13:36

(单词翻译:单击)

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Redshift is an effect created by light waves.

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红移是光波产生的一种现象7EWhy.5#RDE20dGEI

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It causes the colour of an object to become redder as it moves away from an observer.

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当物体远离观察者时,它会使物体的颜色变得更红[G@c)@%achqF(x.K

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This is because red light has the longest wavelength of all the colours on the visible spectrum.

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这是因为红光在可见光谱中波长最长yKTihdWin)Z!yqR-

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Redshift is not something that humans often see, because an object must be travelling very fast to visibly change colour.

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红移不是人类常能看到的东西,因为一个物体必须移动得非常快,人才能看到它颜色的变化#%]O-5^lKTS

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However, we can observe a similar effect with sound waves, when the pitch of a car horn changes as the car drives away.

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但是,我们可以观察到声波产生的类似效果jn,#;h2a+kx#.ehq。当汽车开走时,喇叭的音高会发生变化czQ;rk_w7d|Z&G.aF#8

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Redshift is important because it has helped astronomers make observations about the universe.

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红移很重要,因为它能帮助天文学家观测宇宙^hQ6Oz6#RvP#^l~dG

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In 1929, the redshift of galaxies caused astronomer Edwin Hubble to discover that the universe is expanding.

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1929年,天文学家爱德文·哈勃正是通过许多星系的红移发现宇宙正在膨胀JM&GsS4s@Ib)l|8]3

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Today, astronomers also use redshift to find the locations of planets outside of our solar system.

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如今,天文学家还利用红移来寻找太阳系外行星的位置r8F,Da!owIB_g2F4I

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