red shift

简明释义

红移

英英释义

例句

1.Astronomers observed a significant red shift 红移 in the light from distant galaxies, indicating they are moving away from us.

天文学家观察到来自遥远星系的光线中有显著的红移，这表明它们正在远离我们。

2.The discovery of red shift 红移 in the light from quasars helped astronomers understand the expansion of the universe.

在类星体的光中发现红移帮助天文学家理解宇宙的膨胀。

3.Scientists use red shift 红移 measurements to determine the speed at which galaxies are receding.

科学家使用红移测量来确定星系远离的速度。

4.The red shift 红移 of the universe supports the Big Bang theory.

宇宙的红移支持了大爆炸理论。

5.A higher red shift 红移 value suggests that an object is moving away faster.

更高的红移值表明一个物体正在更快地远离。

作文

The universe is a vast and mysterious place, filled with wonders that challenge our understanding of physics and cosmology. One of the most fascinating phenomena observed in the cosmos is the red shift, a term used to describe how light from distant galaxies shifts towards the red end of the spectrum as they move away from us. This phenomenon not only provides insights into the dynamics of the universe but also serves as a cornerstone for the theory of an expanding universe. The concept of red shift can be traced back to the early 20th century, when astronomers like Edwin Hubble began to observe that galaxies are moving away from Earth at speeds proportional to their distances. This observation led to the realization that the universe is expanding, a revolutionary idea that changed the course of modern astronomy. The red shift occurs due to the Doppler effect, which is the same principle that causes the change in pitch of a passing siren. As a galaxy moves away from us, the wavelengths of the light it emits stretch, causing the light to appear redder than it would if the galaxy were stationary. This stretching of light is not just a trivial detail; it carries profound implications about the nature of our universe. When we observe the red shift in light from distant galaxies, we are essentially looking back in time. The farther away a galaxy is, the longer it has taken for its light to reach us, and the more we can learn about the conditions of the universe in its youth. The study of red shift has also led to the discovery of the cosmic microwave background radiation, a remnant from the Big Bang that fills the universe and provides further evidence of its expansion. Understanding red shift is crucial for astronomers as they attempt to measure the rate of this expansion, known as the Hubble constant. This measurement is vital for determining the age of the universe and understanding its ultimate fate. Additionally, red shift plays a significant role in the study of dark energy, a mysterious force that seems to be accelerating the expansion of the universe. By observing the red shift of supernovae, scientists have gathered evidence supporting the existence of dark energy, which poses one of the greatest challenges in contemporary astrophysics. In conclusion, the phenomenon of red shift is not merely a scientific curiosity but a fundamental aspect of our understanding of the universe. It encapsulates the dynamic nature of cosmic structures and the ongoing evolution of the cosmos. As we continue to explore the universe, the red shift will remain a key tool in unraveling the mysteries of space and time, reminding us of the ever-expanding horizons of human knowledge.

宇宙是一个广阔而神秘的地方，充满了挑战我们对物理学和宇宙学理解的奇观。宇宙中观察到的最迷人的现象之一就是红移，这个术语用来描述来自遥远星系的光在它们远离我们时向光谱红色端移动的现象。这一现象不仅提供了关于宇宙动态的见解，而且还作为扩展宇宙理论的基石。红移的概念可以追溯到20世纪初，当时像埃德温·哈勃这样的天文学家开始观察到，星系远离地球的速度与其距离成正比。这一观察导致了宇宙正在扩张的认识，这是一个革命性的想法，改变了现代天文学的进程。红移的发生是由于多普勒效应，这一原理与经过的警报声音调变化相同。当一个星系远离我们时，它发出的光波长会拉伸，导致光看起来比星系静止时更红。这种光的拉伸并不是一个微不足道的细节；它承载着关于我们宇宙本质的深刻意义。当我们观察遥远星系的红移时，我们实际上是在回望过去。一个星系离我们越远，其光到达我们的时间就越长，我们就能了解到宇宙早期的条件。对红移的研究也导致了宇宙微波背景辐射的发现，这是一种来自大爆炸的残余，填满了宇宙，并进一步提供了其扩张的证据。理解红移对于天文学家来说至关重要，因为他们试图测量这种扩张的速率，这被称为哈勃常数。这一测量对于确定宇宙的年龄和理解它的最终命运至关重要。此外，红移在暗能量研究中也发挥着重要作用，暗能量是一种神秘的力量，似乎正在加速宇宙的扩张。通过观察超新星的红移，科学家们收集了支持暗能量存在的证据，这对当代天体物理学提出了最大的挑战之一。总之，红移现象不仅仅是科学的好奇心，而是我们理解宇宙的基本方面。它概括了宇宙结构的动态性质和宇宙的持续演变。随着我们继续探索宇宙，红移将仍然是揭开空间和时间奥秘的关键工具，提醒我们人类知识不断扩展的视野。