Refracting
31List of largest optical refracting telescopes — Here is a list of the largest optical refracting telescopes sorted by lens diameter and focal length. The largest refractor ever constructed was the Great Paris Exhibition Telescope of 1900. The largest practical functioning refracting telescope… …
32double-refracting crystal — dvejopai laužiantis kristalas statusas T sritis fizika atitikmenys: angl. double refracting crystal vok. doppelbrechender Kristall, m rus. двоякопреломляющий кристалл, m pranc. cristal biréfringent, m …
33doubly refracting prism — dvilūžė prizmė statusas T sritis fizika atitikmenys: angl. doubly refracting prism vok. doppelbrechendes Prisma, n rus. двоякопреломляющая призма, f pranc. prisme biréfringent, m …
34principal angle — refracting a …
35birefringent — Refracting twice; splitting a ray of light in two …
36dioptric media — refracting media …
37History of the telescope — The earliest known working telescopes appeared in 1608 and are credited to Hans Lippershey and Zacharias Janssen, spectacle makers in Middelburg, and Jacob Metius of Alkmaar. The design of these early refracting telescopes consisted of a convex… …
38Optical telescope — Eight Inch refracting telescope (Chabot Space and Science Center) An optical telescope is a telescope which is used to gather and focus light mainly from the visible part of the electromagnetic spectrum for directly viewing a magnified image for… …
39telescope — /tel euh skohp /, n., adj., v., telescoped, telescoping. n. 1. an optical instrument for making distant objects appear larger and therefore nearer. One of the two principal forms (refracting telescope) consists essentially of an objective lens… …
40optics — /op tiks/, n. (used with a sing. v.) the branch of physical science that deals with the properties and phenomena of both visible and invisible light and with vision. [1605 15; < ML optica < Gk optiká, n. use of neut. pl. of OPTIKÓS; see OPTIC,… …
