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21 de febrero de 2021. https://phys.org/news/2018-03-swiss-army-knife-screens.html US lasers? PLA preparing to raise its deflector shields – SCMP.com…52 kB (6159 palabras) - 16:35 16 sep 2023
Resultados de la Wikipedia en inglés.
- mounted in front of two flat rectangular reflecting screens joined at an angle, usually 90°. Corner reflector antennas have moderate gain of 10–15 dB, high…6 kB (613 palabras) - 16:21 29 sep 2023
- show a strong "return" on radar screens. A simple corner reflector consists of three conducting sheet metal or screen surfaces at 90° angles to each other…8 kB (895 palabras) - 02:18 26 mar 2024
- Retroreflector (redirección desde Retro-reflector)retroflector's reflection is brighter than that of a diffuse reflector. Corner reflectors and cat's eye reflectors are the most used kinds. There are several ways…40 kB (4525 palabras) - 23:12 27 may 2024
- Reflective array antenna (sección Reflectors)elements as well as driven elements. The reflector may be a metal sheet or more commonly a wire screen. A metal screen reflects radio waves as well as a solid…14 kB (1633 palabras) - 04:32 23 abr 2024
- A reflector sight or reflex sight is an optical sight that allows the user to look through a partially reflecting glass element and see an illuminated…32 kB (4160 palabras) - 10:10 20 ene 2024
- Parabolic antenna (redirección desde Shaped reflector)A parabolic antenna is an antenna that uses a parabolic reflector, a curved surface with the cross-sectional shape of a parabola, to direct the radio…39 kB (4880 palabras) - 20:46 2 ene 2024
- Harbor had problems due to frost heaving the ground and shifting the reflector screens out of alignment. Digging up the affected poles and replacing them…24 kB (1978 palabras) - 19:20 19 abr 2024
- Flashlight (sección Reflectors and lenses)light source mounted in a reflector, a transparent cover (sometimes combined with a lens) to protect the light source and reflector, a battery, and a switch…44 kB (5735 palabras) - 22:43 15 feb 2024
- Klieg lights usually have a Fresnel lens with a spherical reflector or an ellipsoidal reflector with a lens train containing two plano-convex lenses or…5 kB (654 palabras) - 07:29 6 ene 2024
- Liquid-crystal display (redirección desde LCD screens)Liquid crystals do not emit light directly but instead use a backlight or reflector to produce images in color or monochrome. LCDs are available to display…120 kB (13 603 palabras) - 09:21 26 abr 2024
- Curved mirror (redirección desde Spherical reflector)in optical devices. The most common non-spherical type are parabolic reflectors, found in optical devices such as reflecting telescopes that need to image…17 kB (1846 palabras) - 09:58 3 may 2024
- (feedline), and adjustment mechanisms. For its outdoor placement, the main reflector screen is produced from aluminum, and all internal parts are housed into a…6 kB (759 palabras) - 23:20 5 jul 2022
- power lamp for sufficient screen illumination. More modern overhead projectors use an integrated lamp and conical reflector assembly, allowing the lamp…25 kB (3196 palabras) - 21:32 26 feb 2024
- dipoles suspended in a parallel row in front of a flat reflector screen (the "curtain"). The screen or curtain consists of a second row of vertical parallel…69 kB (9034 palabras) - 03:01 28 may 2024
- radiators with no electrical connection, usually including one so-called reflector and any number of directors. It was invented in 1926 by Shintaro Uda of…40 kB (5046 palabras) - 03:19 25 abr 2024
- Denial-of-service attack (redirección desde Distributed reflector denial of service)bandwidth that is sent to a victim. Many services can be exploited to act as reflectors, some harder to block than others. US-CERT have observed that different…99 kB (11 464 palabras) - 16:23 27 may 2024
- Lenticular lens (redirección desde Lenticular screen)front-projection screens can also be described as lenticular. In this case, rather than transparent lenses, the shapes formed are tiny curved reflectors. Lenticular…11 kB (1431 palabras) - 19:40 15 may 2024
- Radar (sección Parabolic reflector)already used the classic antenna setup of horn antenna with parabolic reflector and was presented to German military officials in practical tests in Cologne…98 kB (11 761 palabras) - 19:09 27 may 2024
- what he called lentilles à échelons ('lenses by steps') to replace the reflectors then in use, which reflected only about half of the incident light. Another…56 kB (6475 palabras) - 17:28 21 abr 2024
- platinum reflector (R) and onto the screen. They found that only a tiny fraction of the alpha particles that struck the reflector bounced onto the screen (in…48 kB (6222 palabras) - 03:43 28 may 2024
- half-wave dipoles fed in phase, in front of a flat reflector such as a metal plate or wire screen. This radiates a single beam of radio waves perpendicular…25 kB (3307 palabras) - 18:44 22 ene 2024