History 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… … Wikipedia
Refracting telescope — A refracting or refractor telescope is a dioptric telescope that uses a lens as its objective to form an image. The refracting telescope design was originally used in spy glasses and astronomical telescopes but is also used in other devices such… … 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
Experimento de Melde — Saltar a navegación, búsqueda Modelo del experimento de … Wikipedia Español
electrical and electronics engineering — Introduction the branch of engineering concerned with the practical applications of electricity in all its forms, including those of the field of electronics. Electronics engineering is that branch of electrical engineering concerned with… … Universalium
Casos de dopaje en el deporte — Anexo:Casos de dopaje en el deporte Saltar a navegación, búsqueda La lista de casos de dopaje en el deporte es una lista incompleta de deportistas que han estado implicados en acusaciones por dopaje. Esta contiene a aquellos que han sido… … Wikipedia Español
List of Olympic medalists in athletics (men) — This is the complete list of men s Olympic medalists in athletics from 1896 to 2008. See also: List of Olympic medalists in athletics (women), Athletics at the Summer Olympics, and Lists of Olympic medalists Contents 1 Current program … Wikipedia
Polygon — For other uses, see Polygon (disambiguation). Some polygons of different kinds In geometry a polygon ( … Wikipedia
1979 in sports — yearbox in?=in sports cp=19th century c=20th century cf=21st century yp1=1976 yp2=1977 yp3=1978 year=1979 ya1=1980 ya2=1981 ya3=1982 dp3=1940s dp2=1950s dp1=1960s d=1970s da=0 dn1=1980s dn2=1990s dn3=2000s|Artistic Gymnastics*World Artistic… … Wikipedia
1979 — Portal Geschichte | Portal Biografien | Aktuelle Ereignisse | Jahreskalender ◄ | 19. Jahrhundert | 20. Jahrhundert | 21. Jahrhundert ◄ | 1940er | 1950er | 1960er | 1970er | 1980er | 1990er | 2000er | ► ◄◄ | ◄ | 1975 | 1976 | 1977 | 1978 |… … Deutsch Wikipedia
