sáček

Mira otros diccionarios:

• Catadioptric system — A 150 mm aperture catadioptric telescope (Maksutov) A catadioptric optical system is one where refraction and reflection are combined in an optical system, usually via lenses (dioptrics) and curved mirrors (catoptrics). Catadioptric… …   Wikipedia

• Mangin mirror — Diagram of a Mangin mirror. In optics, a Mangin mirror is a negative meniscus lens with the reflective surface on the rear side of the glass forming a curved mirror that reflects light without spherical aberration. This reflector was invented in… …   Wikipedia

• Reflecting telescope — 24 inch convertible Newtonian/Cassegrain reflecting telescope on display at the Franklin Institute. A reflecting telescope (also called a reflector) is an optical telescope which uses a single or combination of curved mirrors that reflect light… …   Wikipedia

• Newtonian telescope — The Newtonian telescope is a type of reflecting telescope invented by the British scientist Sir Isaac Newton (1642–1727), using a concave primary mirror and a flat diagonal secondary mirror. Newton’s first reflecting telescope was completed in… …   Wikipedia

• Maksutov telescope — A 150mm aperture Maksutov Cassegrain telescope. The Maksutov is a catadioptric telescope design that combines a spherical mirror with a weakly negative meniscus lens in a design that takes advantage of all the surfaces being nearly spherically… …   Wikipedia

• Электросемафор — оптический сигнал, устанавливаемый на линиях железных дорог для регулирования движения поездов. Указания этого сигнала находятся в зависимости от положения электрических аппаратов или приборов, находящихся на станциях и постах, связанных тем или… …   Энциклопедический словарь Ф.А. Брокгауза и И.А. Ефрона

• Telescopio Ritchey-Chrétien — El telescopio reflector de 60 cm (24 pulgadas) de George Ritchey , el primer RCT que se construyó, más tarde en exhibición en el Centro de Ciencias y del Espacio Chabot en 2004 …   Wikipedia Español

• sač — sȁč1 m <N mn sàčevi> DEFINICIJA reg. željezni ili zemljani poklopac pod kojim se na ognjištu peče kruh, pita ili kakvo drugo jelo; peka [kruh ispod sača; peći ispod sača/pod sačem] ONOMASTIKA pr. (prema zanimanju i nadimačka): Sȁčār… …   Hrvatski jezični portal

• Geld — 1. Ach, nun fällt mi all mîn klên Geld bî. (Brandenburg.) Ein Ausruf, der häufig erfolgt, wenn jemand durch irgendeinen Umstand an etwas erinnert wird, was er hätte thun sollen, aber bisher zu thun vergessen hat. 2. All wîr1 Geld, dat et Wîf nig… …   Deutsches Sprichwörter-Lexikon

• Herr — 1. Ain Herr, der zu lugen lust hat, dess diener seind alle gottloss. – Agricola II, 221. 2. Alle sind Herren, wer ist Sklave? 3. Alles kamme unsem leiwen Heren alleine anvertruggen, awwer kein jung Méaken un kein draug Hög. (Westf.) Alles kann… …   Deutsches Sprichwörter-Lexikon