emission spectrum

简明释义

放射光谱

英英释义

例句

1.By studying the emission spectrum, researchers can infer the temperature of distant galaxies.

通过研究发射光谱，研究人员可以推断遥远星系的温度。

2.Different elements produce unique emission spectra, which can be used for identification.

不同的元素产生独特的发射光谱，可用于识别。

3.In a laboratory, scientists used lasers to excite atoms and observe their emission spectrum.

在实验室中，科学家使用激光激发原子并观察它们的发射光谱。

4.The emission spectrum of hydrogen is a key factor in astrophysical studies.

氢的发射光谱是天体物理研究中的一个关键因素。

5.The scientist analyzed the emission spectrum of the star to determine its chemical composition.

科学家分析了星星的发射光谱以确定其化学成分。

作文

The study of light and its properties has fascinated scientists for centuries. One of the most intriguing aspects of light is its interaction with matter, which leads to the formation of the emission spectrum. An emission spectrum is a spectrum of the electromagnetic radiation emitted by a source, typically when atoms or molecules transition from a higher energy state to a lower one. When an atom absorbs energy, its electrons can jump to higher energy levels. However, these excited states are unstable, and the electrons eventually return to their original levels, releasing energy in the form of light. This process results in the creation of the emission spectrum, which is unique to each element or compound. Understanding the emission spectrum is crucial for various fields, including astronomy, chemistry, and physics. For instance, astronomers utilize the emission spectrum of stars to determine their composition, temperature, density, and motion. Each element emits light at specific wavelengths, leading to distinctive patterns in the spectrum. By analyzing these patterns, scientists can infer the elements present in distant stars and galaxies, thus expanding our knowledge of the universe. In a laboratory setting, the emission spectrum is often studied using spectrometers. These instruments disperse light into its component colors, allowing researchers to observe the unique lines of the emission spectrum. Each line corresponds to a particular transition between energy levels in an atom. For example, when hydrogen gas is energized, it emits light at specific wavelengths, producing a series of lines known as the Balmer series. These lines are key to understanding the electronic structure of hydrogen and other elements. Moreover, the emission spectrum has practical applications in various industries. In lighting technology, for instance, the emission spectrum of different gases is harnessed to create vibrant colors in neon lights. Similarly, the emission spectrum is utilized in forensic science to analyze substances and identify unknown materials. In conclusion, the emission spectrum is a fundamental concept in the study of light and matter. Its significance spans across numerous scientific disciplines and practical applications. By studying the emission spectrum, scientists gain insights into the nature of elements and compounds, enhancing our understanding of the universe and improving technologies that impact our daily lives. The exploration of emission spectrum continues to be a vital area of research, promising further discoveries and advancements in science and technology.

光及其性质的研究吸引了科学家们几个世纪。光与物质的相互作用是最引人入胜的方面之一，这导致了发射光谱的形成。发射光谱是由源发出的电磁辐射的光谱，通常当原子或分子从较高能量状态过渡到较低能量状态时形成。当一个原子吸收能量时，它的电子可以跃迁到更高的能量水平。然而，这些激发态是不稳定的，电子最终会返回到它们的原始水平，释放出能量以光的形式。这一过程导致了发射光谱的形成，而每种元素或化合物的发射光谱都是独特的。理解发射光谱对于天文学、化学和物理等多个领域至关重要。例如，天文学家利用恒星的发射光谱来确定它们的成分、温度、密度和运动。每种元素在特定波长下发出光，从而在光谱中形成独特的模式。通过分析这些模式，科学家可以推断出遥远恒星和星系中存在的元素，从而扩展我们对宇宙的认识。在实验室环境中，通常使用光谱仪研究发射光谱。这些仪器将光分散成其组成颜色，使研究人员能够观察到发射光谱的独特线条。每条线对应于原子中能量水平之间的特定跃迁。例如，当氢气被激发时，它在特定波长下发出光，产生一系列称为巴尔默系列的线条。这些线条是理解氢及其他元素电子结构的关键。此外，发射光谱在各个行业中也有实际应用。例如，在照明技术中，不同气体的发射光谱被利用来创造霓虹灯中的鲜艳色彩。同样，发射光谱在法医科学中用于分析物质并识别未知材料。总之，发射光谱是光与物质研究中的基本概念。它的重要性跨越了众多科学学科和实际应用。通过研究发射光谱，科学家获得了对元素和化合物性质的深入了解，增强了我们对宇宙的理解，并改善了影响我们日常生活的技术。对发射光谱的探索仍然是一个重要的研究领域，承诺着进一步的发现和科学技术的进步。