absorption line

简明释义

吸收线

英英释义

例句

1.The absorption line corresponding to oxygen was particularly strong in the data collected from the exoplanet.

从外星行星收集的数据中，与氧气对应的吸收线特别强。

2.By studying the absorption lines in the light from the planet, scientists can infer its atmospheric conditions.

通过研究来自行星的吸收线，科学家可以推测其大气条件。

3.Researchers analyzed the absorption line to determine the composition of the distant galaxy.

研究人员分析了吸收线以确定遥远星系的成分。

4.The spectrum of the star shows a distinct absorption line, indicating the presence of hydrogen in its atmosphere.

这颗星星的光谱显示出明显的吸收线，表明其大气中存在氢。

5.Astronomers use absorption lines to measure the velocity of stars moving away from us.

天文学家利用吸收线来测量远离我们的恒星的速度。

作文

In the field of astrophysics, the study of light and its interaction with matter is crucial for understanding the universe. One important concept that arises in this context is the absorption line, which refers to a specific wavelength of light that is absorbed by a substance, such as gas or a star's atmosphere. When light passes through a medium, certain wavelengths are absorbed, resulting in dark lines on a spectrum. These dark lines are called absorption lines and can provide significant information about the composition and temperature of celestial objects.The formation of absorption lines is rooted in quantum mechanics. Atoms and molecules have distinct energy levels, and when photons of light encounter these particles, they can be absorbed if their energy matches the energy difference between two levels of an atom or molecule. This absorption process leads to the removal of light at specific wavelengths, creating the characteristic dark lines in a spectrum. For example, when we observe the spectrum of sunlight, we notice numerous absorption lines caused by elements like hydrogen, helium, and heavier metals in the Sun’s atmosphere.Astronomers utilize absorption lines to identify the elements present in distant stars and galaxies. By analyzing the pattern and intensity of these lines, scientists can deduce not only the chemical composition but also the physical conditions such as temperature and pressure. This technique is known as spectroscopy, and it has been instrumental in advancing our knowledge of stellar and galactic phenomena.Moreover, absorption lines are not limited to stars; they can also be observed in the spectra of quasars and other astronomical objects. Quasars, which are extremely luminous and distant objects powered by supermassive black holes, exhibit unique absorption lines that reveal information about the interstellar medium between us and the quasar. By studying these lines, researchers can learn about the density, temperature, and movement of gas clouds in the universe.In addition to their importance in astronomy, absorption lines have practical applications on Earth. They play a significant role in atmospheric science, where scientists monitor the absorption lines of gases in the Earth's atmosphere to understand climate change and air quality. Instruments like spectrometers can detect these lines and quantify the concentration of pollutants or greenhouse gases, aiding in environmental monitoring and policy-making.In conclusion, the concept of absorption lines is fundamental in both astrophysics and environmental science. By studying these lines, scientists gain insights into the composition and behavior of various celestial bodies, as well as the Earth's atmosphere. The ability to interpret absorption lines enriches our understanding of the universe and helps address pressing issues related to climate change and environmental degradation. As technology advances, the analysis of absorption lines will continue to evolve, opening new avenues for research and discovery in the realms of both space and Earth sciences.

在天体物理学领域，光及其与物质相互作用的研究对于理解宇宙至关重要。在这个背景下，一个重要的概念是吸收线，它指的是被物质（如气体或恒星大气）吸收的特定波长的光。当光通过介质时，某些波长被吸收，从而在光谱上形成暗线。这些暗线被称为吸收线，可以提供有关天体组成和温度的重要信息。吸收线的形成根植于量子力学。原子和分子具有独特的能级，当光子遇到这些粒子时，如果光子的能量与原子或分子的两个能级之间的能量差相匹配，就会被吸收。这一吸收过程导致特定波长的光被移除，产生光谱中的特征性暗线。例如，当我们观察阳光的光谱时，会注意到由于氢、氦以及太阳大气中的重金属等元素造成的众多吸收线。天文学家利用吸收线来识别遥远恒星和星系中存在的元素。通过分析这些线的模式和强度，科学家不仅可以推断出化学组成，还可以了解温度和压力等物理条件。这种技术被称为光谱学，它在推动我们对恒星和星系现象的理解方面发挥了重要作用。此外，吸收线并不限于恒星；它们也可以在类星体和其他天文物体的光谱中观察到。类星体是由超大质量黑洞驱动的极其明亮和遥远的物体，展示了独特的吸收线，揭示了我们与类星体之间的星际介质的信息。通过研究这些线，研究人员可以了解宇宙中气体云的密度、温度和运动。除了在天文学中的重要性，吸收线在地球上的实际应用也很显著。它们在大气科学中发挥着重要作用，科学家监测地球大气中气体的吸收线，以了解气候变化和空气质量。像光谱仪这样的仪器可以检测这些线并量化污染物或温室气体的浓度，从而有助于环境监测和政策制定。总之，吸收线的概念在天体物理学和环境科学中都是基础性的。通过研究这些线，科学家获得了关于各种天体的组成和行为的见解，以及地球大气的情况。解释吸收线的能力丰富了我们对宇宙的理解，并有助于解决与气候变化和环境退化相关的紧迫问题。随着技术的进步，吸收线的分析将继续发展，为太空和地球科学领域的研究和发现开辟新的途径。