aluminized mirror
21Historia del telescopio — Representación de un telescopio danés de 1624. La historia del telescopio cubre el largo proceso de transformación del que ha sido objeto este instrumento óptico, gracias a los descubrimientos en los campos de la óptica y de la física. La… …
22Stage lighting instrument — Stage lighting instruments are used in stage lighting to illuminate theatrical productions, rock concerts and other performances taking place in live performance venues. They are also used to light television studios and sound stages.Terminology… …
23Hydrogen — This article is about the chemistry of hydrogen. For the physics of atomic hydrogen, see Hydrogen atom. For other meanings, see Hydrogen (disambiguation). ← hydrogen → helium …
24Candle — For other uses, see Candle (disambiguation). A close up image of a burning candle showing the wick and the various parts of the flame …
25Mars Exploration Rover — Artist s conception of rover on Mars Part of a panorama taken by the Spi …
26Chevrolet Impala — 1958 Chevrolet Impala Coupe Manufacturer Chevrolet Division of General Motors Production …
27John Dobson (astronomer) — This article is about John L. Dobson, the astronomer. For other men with a similar name, see John Dobson. John Lowry Dobson (born September 14, 1915) is a highly influential amateur astronomer. He is most well known in astronomy circles because… …
28Gas lighting — For other uses, see Gaslight (disambiguation). Gas lighting is production of artificial light from combustion of a gaseous fuel, including hydrogen, methane, carbon monoxide, propane, butane, acetylene, ethylene, or natural gas. Before… …
29Polarized 3D glasses — create the illusion of three dimensional images by restricting the light that reaches each eye, an example of stereoscopy. To present a stereoscopic motion picture, two images are projected superimposed onto the same screen through orthogonal… …
30Sulfur lamp — The sulfur lamp (also sulphur lamp) is a highly efficient full spectrum electrodeless lighting system whose light is generated by sulfur plasma that has been excited by microwave radiation. The technology was developed in the early 1990s, but,… …
