blueshift

简明释义

英[ˈbluːˌʃɪft]美[ˈbluːˌʃɪft]

n. 蓝移；蓝移效应

英英释义

单词用法

同义词

反义词

例句

1.Although in this case the waves are not in the visible spectrum, physicists still call the stretching and shrinking of the waves red-shift and blueshift, respectively.

虽然这种情况下电磁波的波长不在可见光的范围内，物理学家仍旧分别称波的红移和蓝移为“伸长（Stretching）”与“收缩（Shrinking）”。

2.Although in this case the waves are not in the visible spectrum, physicists still call the stretching and shrinking of the waves red-shift and blueshift, respectively.

虽然这种情况下电磁波的波长不在可见光的范围内，物理学家仍旧分别称波的红移和蓝移为“伸长（Stretching）”与“收缩（Shrinking）”。

3.A significant blueshift was detected in the light spectrum of the nearby galaxy.

在附近星系的光谱中检测到了显著的蓝移。

4.Astronomers use the blueshift effect to determine the speed at which galaxies are approaching each other.

天文学家利用蓝移效应来确定星系彼此接近的速度。

5.The observation of a blueshift indicates that the star is moving towards us.

观察到的蓝移表明这颗星星正朝我们移动。

6.The blueshift of light from the comet suggests it is on a collision course with Earth.

彗星发出的光的蓝移表明它正朝着与地球相撞的轨道前进。

7.By measuring the blueshift, scientists can infer the motion of celestial objects.

通过测量蓝移，科学家可以推断天体的运动。

作文

In the vast realm of astrophysics, one of the most fascinating phenomena is the concept of blueshift. This term refers to the change in the wavelength of light emitted by an object moving towards an observer. When an object, such as a star or galaxy, moves closer to us, the light waves it emits are compressed, leading to a shift towards the blue end of the spectrum. This effect is not just a theoretical concept; it has practical implications in our understanding of the universe and its expansion. The blueshift phenomenon can be observed in various astronomical contexts. For instance, when we look at the Andromeda Galaxy, which is on a collision course with the Milky Way, we notice a significant blueshift in its light. This observation indicates that the galaxy is moving towards us at a high velocity. Such measurements provide critical data for astronomers to determine the dynamics of celestial bodies and their interactions within the cosmos. Moreover, the study of blueshift is essential for understanding the fundamental principles of the Doppler effect. The Doppler effect explains how the frequency of waves changes in relation to an observer moving towards or away from the source of the waves. In the case of blueshift, the compression of light waves results in a higher frequency, which we perceive as a shift towards the blue color in the visible spectrum. Conversely, when an object moves away from us, we observe a redshift, where the light waves are stretched, resulting in a lower frequency and a shift towards the red end of the spectrum.The implications of blueshift extend beyond mere observation; they also inform our understanding of the universe's structure and behavior. For example, the discovery of blueshift in certain galaxies has led scientists to conclude that these galaxies are part of larger groups or clusters, interacting gravitationally with one another. This interaction can lead to complex movements that alter the perceived speed and direction of these celestial objects. Furthermore, blueshift plays a crucial role in the study of cosmic phenomena such as quasars and neutron stars. Quasars, which are incredibly bright and distant objects powered by supermassive black holes, often exhibit blueshift due to their rapid movement towards Earth. Understanding these shifts helps astronomers estimate distances and the rate of expansion of the universe. Similarly, neutron stars, which are remnants of supernova explosions, can also display blueshift as they rotate and move through space. In conclusion, the concept of blueshift is a vital aspect of modern astrophysics that enhances our understanding of the universe. By studying the blueshift of light emitted from celestial bodies, astronomers can gather invaluable information about their motion, distance, and the gravitational forces at play. As we continue to explore the cosmos, the significance of blueshift will undoubtedly remain a key element in unraveling the mysteries of our universe. Through advancements in technology and observational techniques, the exploration of blueshift will lead us to new discoveries and a deeper appreciation of the intricate dance of the stars above us.

在广袤的天体物理学领域中，最迷人的现象之一就是“blueshift”这一概念。这个术语指的是当一个物体朝向观察者移动时，其发出的光波长发生的变化。当一个物体，比如星星或星系，朝我们靠近时，它发出的光波被压缩，导致光谱向蓝色端的偏移。这个效应不仅仅是一个理论概念；它在我们理解宇宙及其扩展方面具有实际意义。“blueshift”现象可以在各种天文背景中观察到。例如，当我们观察仙女座星系时，该星系正朝向银河系冲撞，我们注意到其光线显著的“blueshift”。这一观察表明，该星系以高速度朝我们移动。这些测量为天文学家提供了关键数据，以确定天体及其在宇宙中的相互作用的动态。此外，研究“blueshift”对于理解多普勒效应的基本原理至关重要。多普勒效应解释了波的频率如何随着观察者朝向或远离波源的运动而变化。在“blueshift”的情况下，光波的压缩导致频率升高，我们将其感知为可见光谱向蓝色的偏移。相反，当一个物体远离我们时，我们观察到“红移”，即光波被拉伸，导致频率降低，光谱向红色端偏移。“blueshift”的影响超越了单纯的观察；它们还告知我们对宇宙结构和行为的理解。例如，在某些星系中发现的“blueshift”使科学家得出结论，这些星系是更大群体或簇的一部分，相互之间通过引力相互作用。这种相互作用可以导致复杂的运动，改变这些天体的速度和方向。此外，“blueshift”在研究类星体和中子星等宇宙现象中也发挥着至关重要的作用。类星体是由超大质量黑洞驱动的极其明亮和遥远的物体，通常由于它们快速朝地球移动而表现出“blueshift”。理解这些偏移有助于天文学家估计距离和宇宙的扩展速度。同样，中子星是超新星爆炸的残余物，也可能因其旋转和在空间中的运动而显示出“blueshift”。总之，“blueshift”的概念是现代天体物理学的重要组成部分，增强了我们对宇宙的理解。通过研究来自天体的光的“blueshift”，天文学家能够收集关于它们的运动、距离和所施加的引力的宝贵信息。随着我们继续探索宇宙，“blueshift”的重要性无疑将成为揭开我们宇宙奥秘的关键元素。通过技术和观察技术的进步，对“blueshift”的探索将引导我们发现新的事物，并更深入地欣赏我们头顶星星的复杂舞蹈。