Thin disk - Wikipedia
The thin disk is a structural component of spiral and S0-type galaxies, composed of stars, gas and dust. It is the main non-centre (e.g. galactic bulge) density, of such matter.
结晶终将化碟片——高功率超短脉冲碟片激光器的“蜕变” - 知乎
1993年，德国斯图加特大学Giesen [1]教授首次提出一种将增益介质“压扁”，从而提升其径厚比的碟片固体激光模型，晶体内废热流向仅沿Z方向轴传输，大大解决了传统棒状固体激光器的散热问题。 经过多年发展，高功率碟片激光器以其在结构、效率和光束质量上的技术优势，成为大能量、高平均功率、高重复频率超短脉冲激光器的重要发展路线 [2-3]。 碟片激光器利用多通泵浦结构，将泵浦光多次反射至厚度为百微米量级的片状增益介. 李刚，刘锐，公发全，戴隆辉，雷希音， …
Galactic disc - Wikipedia
A galactic disc (or galactic disk) is a component of disc galaxies, such as spiral galaxies like the Milky Way and lenticular galaxies. Galactic discs consist of a stellar component (composed of most of the galaxy's stars) and a gaseous component (mostly composed of cool gas and dust).
Consider now a very thin gaseous disk, with a half – thickness z0 ≪ r. Within a thin disk rotational velocity is a function of r only, and it is practically constant on cylinders with constant radius r. The surface mass density is defined as disk — 1
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Galactic Thin Disk
Of the components of our MILKY WAY GALAXY, the thin disk is the most prominent part to our eyes. It manifests itself as the band of faint light that we see encircling the whole sky. Except for the bulge in the direction of the center of our Galaxy, the stars that make up the Milky Way as we see it are part of the thin disk, just as our Sun is ...
Thin disk - Wikiwand
The thin disk is a structural component of spiral and S0-type galaxies, composed of stars, gas and dust. It is the main non-centre (e.g. galactic bulge) density, of such matter.
Galactic Thin Disk | Structure, Formation & Dynamics
2024年5月28日 · The galactic thin disk is a dynamic and complex component of the Milky Way, playing a critical role in the galaxy’s structure, formation, and evolution. Its study offers valuable insights into the processes that shape galaxies across the universe.
Thin Disk | COSMOS - Swinburne
The thin disk is the defining component of disk galaxies in general and spiral galaxies in particular. It contains stars, star clusters, gas and dust which are confined to the galaxy’s plane of rotation.
A time-resolved picture of our Milky Way’s early formation history
2022年3月23日 · Our results indicate that the formation of the Galaxy’s old (thick) disk started approximately 13 Gyr ago, only 0.8 Gyr after the Big Bang, and 2 Gyr earlier than the final assembly of the inner...
大能量碟片激光多通放大器腔体设计研究综述
In order to clarify the cavity design methods of thin-disk multi-pass amplifiers, we summarize the different types of thin-disk multi-pass amplifiers and concludes that there are four fundamental design concepts: (1) 4 f relay imaging, (2) resonant cavity design/optical Fourier transform, (3) near-collimated beam transmission, and (4) others ...