Spectroscopy - Wikipedia
Spectroscopy, primarily in the electromagnetic spectrum, is a fundamental exploratory tool in the fields of astronomy, chemistry, materials science, and physics, allowing the composition, physical structure and electronic structure of matter to be investigated at the atomic, molecular and macro scale, and over astronomical distances.
Optical spectrometer - Wikipedia
A spectrometer is used in spectroscopy for producing spectral lines and measuring their wavelengths and intensities. Spectrometers may operate over a wide range of non-optical wavelengths, from gamma rays and X-rays into the far infrared.
Spectroscopy | Definition, Types, & Facts | Britannica
Spectroscopy, study of the absorption and emission of light and other radiation by matter, as related to the dependence of these processes on the wavelength of the radiation. Spectroscopic analysis has been crucial in the development of the most fundamental theories in physics.
Spectrograph | physics | Britannica
Spectrography records the composition of light emitted by stars and other objects, the star image of the telescope being photographed through a diffraction grating, a device that disperses white light into constituent wavelengths. Elements present in the star or the gas mantle surrounding it …
How Does a Spectrograph Work? [Infographic] - Scientific American
2012年12月1日 · A spectrograph splits light into its component wavelengths. First, light travels from a telescope through a small opening in the spectrograph to a collimating mirror that lines up all...
摄谱仪 - 百度百科
摄谱仪（Spectrograph）是一种可将进入光线分离成 频谱 的仪器。 现有数种仪器基于电磁波确切性质可被称为摄谱仪。 原子 发射 光谱分析 中，试样 激发 后将 光源 的 复合光 经 色散 分解为不同 波长 的 光谱线，并用感光板记录下来的 装置。 由 照明系统 、准光系统、色散系统和 投影系统 组成。 分为 棱镜摄谱仪 和 光栅摄谱仪 两种。 中文名. 摄谱仪. 外文名. Spectrograph. 用 途. 用于将进入光线分离成频谱. 摄谱仪分类. 相纸摄谱仪. 第一个摄谱仪使用的“感应器”是 相纸。 天文学 …
Spectrography - SpringerLink
2020年5月7日 · Spectrography is one of the principal methods through which astronomers investigate the universe. The existence of dark absorption lines and bright emission lines set against the broad continuum emission and their unique association with energy changes, as discussed in Sect. 2.2, has enabled astronomers to to accomplish the following things:
10.1: Overview of Spectroscopy - Chemistry LibreTexts
An electromagnetic wave is characterized by several fundamental properties, including its velocity, amplitude, frequency, phase angle, polarization, and direction of propagation. 2 For example, the amplitude of the oscillating electric field at any point along the propagating wave is.
Spectrometer, Spectroscope, and Spectrograph - SPIE
A spectrograph is an instrument that separates incoming light by its wavelength or frequency and records the resulting spectrum in some kind of multichannel detector, like a photographic plate. Many astronomical observations use telescopes as, essentially, spectrographs. Citation:
Background: Introduction to Spectroscopy - Imagine the Universe!
2021年10月14日 · A spectrum is simply a chart or a graph that shows the intensity of light being emitted over a range of energies. Spectra can be produced for any energy of light - from low-energy radio waves to very high-energy gamma-rays. Spectra are complex because each spectrum holds a wide variety of information.