- index ellipsoid
- 指数椭面, 折射率椭球
English-Chinese dictionary of mechanical engineering (英汉机械工程大词典). 2013.
index ellipsoid
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Index ellipsoid — In optics, an index ellipsoid is a diagram of an ellipsoid that depicts the orientation and relative magnitude of refractive indices in a crystal. The equation for the ellipsoid is constructed using the electric displacement vector D and the… … Wikipedia
Index of optics articles — Optics is the branch of physics which involves the behavior and properties of light, including its interactions with matter and the construction of instruments that use or detect it.[1] Optics usually describes the behavior of visible,… … Wikipedia
Refractive index — Refraction of light at the interface between two media. In optics the refractive index or index of refraction of a substance or medium is a measure of the speed of light in that medium. It is expressed as a ratio of the speed of light in vacuum… … Wikipedia
Bessel ellipsoid — The Bessel ellipsoid (or Bessel 1841) is an important reference ellipsoid of geodesy. It is currently used by several national surveys of Europe and on other continents, but will be replaced in the next decades by modern ellipsoids of satellite… … Wikipedia
Reference ellipsoid — In geodesy, a reference ellipsoid is a mathematically defined surface that approximates the geoid, the truer figure of the Earth, or other planetary body.Because of their relative simplicity, reference ellipsoids are used as a preferred surface… … Wikipedia
Birefringence — Displacement of light rays with perpendicular polarization through a birefringent material … Wikipedia
Ellipse — Elliptical redirects here. For the exercise machine, see Elliptical trainer. This article is about the geometric figure. For other uses, see Ellipse (disambiguation). Not to be confused with ellipsis. An ellipse obtained as the intersection of a… … Wikipedia
Crystal optics — is the branch of optics that describes the behaviour of light in anisotropic media, that is, media (such as crystals) in which light behaves differently depending on which direction the light is propagating. The index of refraction depends on… … Wikipedia
Erdellipsoid — Dieser Artikel wurde wegen inhaltlicher Mängel auf der Qualitätssicherungsseite des Portals Geowissenschaften eingetragen. Dies geschieht, um die Qualität der Artikel im Themengebiet Geowissenschaften zu steigern. Bitte hilf mit, die Mängel zu… … Deutsch Wikipedia
Normalellipsoid — Dieser Artikel wurde wegen inhaltlicher Mängel auf der Qualitätssicherungsseite des Portals Geowissenschaften eingetragen. Dies geschieht, um die Qualität der Artikel im Themengebiet Geowissenschaften zu steigern. Bitte hilf mit, die Mängel zu… … Deutsch Wikipedia
Indexellipsoid — Das Indexellipsoid, auch Indikatrix oder Fletcher Ellipsoid ist eine von Lazarus Fletcher eingeführte Größe zur Beschreibung der Lichtbrechung in einem doppelbrechenden Kristall. Zusammen mit dem Fresnel Ellipsoid (benannt nach Augustin Jean… … Deutsch Wikipedia
