释义 |
redshift 英'redʃɪft美'redʃɪft 高TCOCA²⁸⁸⁹¹BNC⁵⁷¹⁷⁸iWeb²⁸⁴⁵⁴ 基本英英近义反义例句 n.〈天〉天体红移;红向移动¹⁰⁰
Noun: astronomy a shift in the spectra of very distant galaxies toward longer wavelengths toward the red end of the spectrum; generally interpreted as evidence that the universe is expanding近义词 red shift红移 A redshift can be measured when light from a galaxy is broken up and spread out into a band of colors called a spectrum. 当从星系发出的光被分解展开成光谱的时候就可以测出红移了。 iciba As light from the most distant explosions travels toward Earth, it is stretched by the universe's expansion so that it appears red, a phenomenon known as redshift. 最遥远的爆炸光飞向地球时,被宇宙的膨胀拉长而呈红色——一种被称作红移的现象。 yeeyan Everything is shifting, because the universe is expanding. It’s just easier to see Hydra’s redshift because the farther a galaxy is from our own, the faster it is moving away. 在无数遥远的星系中,并非只有长蛇座才显示出红移现象,由于宇宙一直在膨胀,所有的东西都在移动,之所以能较容易地观察到长蛇座的红移,是因为星系距我们越远,其远离我们而去的速度就越快。 yeeyan The higher the redshift, the longer light has been traveling and the further back in time the supernova occurred. 光运行的时间越长,红移越明显,超新星出现的时间也就越早。 yeeyan The power of this massive cluster telescope has allowed astronomers to detect a galaxy at the distant redshift of5.58. 这巨大质量星系团望远镜的强力使天文学家探测到了一个红移5.58的遥远星系。 yeeyan The Doppler redshift and the cosmological redshift are governed by two distinct formulas. 都卜勒红移和宇宙学红移是由两个截然不同的准则所支配。 iciba Using strong equivalence principle the gravitation redshift of light frequencies derived, by contrasting inertial centrifugal force field on Einstein turntable with Schwarzschild field. 通过球对称引力场与爱因斯坦转盘上的惯性离心力场的对比,利用强等效原理导出光频的引力红移。 cnki “ This galaxy is just beautiful, ” says Yuan. “ Normally, galaxies at that redshift appear as blobs.” “这个星系很美丽,” Yuan如是说道,“通常,具有这么大红移量的星系只有小斑点那么大。” yeeyan “The apparent orientation is biased because we measure orientation not with a compass or with a ruler but with redshift, ” Marinoni says. “因为我们测量方向并不是用指南针或者尺子而是用红移,所以呈现的方向会有畸变,”马里诺尼说。 yeeyan A decreased frequency is equivalent to a longer, or redder, wavelength. This is gravitational redshift. 较低了的频率,相当于较长或较红的波长,这就是红移。 yeeyan After all, only with the correct parameters that convert redshift to position would the reconstructed distribution be spherical. 毕竟只有在正确的将红移变换为位置的参数下,重建结果才会是一个球形。 yeeyan And redshift depends on just how the universe is expanding. 并且红移取决于宇宙如何膨胀。 yeeyan Because the universe is expanding, measuring an object's redshift, and hence its velocity, allows astronomers to deduce its distance, because objects that are farther away are moving more quickly. 由于宇宙正处于膨胀过程中,通过测量一个天体的红移量并算出它的远离速度,天文学家就可以推测出它的距离。因为越远的天体远离速度就越快。 yeeyan In addition, the speed at which an object such as a star or galaxy is moving away from Earth, because of the expansion of the universe, can be worked out from its redshift. 另外,由于宇宙的扩张,一个星体或是银河系这样的物体在其运动过程中经过地球时的速率能够从其红移中计算出来。 topsage In fact, ever since the discovery of this phenomenon, whenever astronomers cannot measure a galaxy's distance more directly they instead give an estimate using its redshift as a proxy. 事实上,从那以后,当天文学家无法找到更直接的测量星系距离的方法时,他们会以红移来代替。 yeeyan In order to differentiate between these scenarios, precise measurements of the Hubble parameter as a function of redshift are needed. 为了在这些观点之间做出区分,就需要精确测量哈勃常数作为红移的函数。 www.astronomy.com.cn |