CG: nm CA: Ciencias Tecnológicas – Tecnología Electrónica – Radar; Telecomunicaciones; Teledetección. CT: En Gran Bretaña se iniciaron los estudios sobre el radar cuando se propuso a Sir Robert Watson-Watt la construcción de un haz destructor con ondas de radio. Las conclusiones del estudio fueron de que no era viable,

GC: n CT: Radar is an acronym for «radio detection and ranging.» A radar system usually operates in the ultra-high-frequency (UHF) or microwave part of the radio-frequency (RF) spectrum, and is used to detect the position and/or movement of objects. Radar can track storm systems, because precipitation reflects electromagnetic fields

CG : nm CT : Ce chapitre explique comment il est possible de déterminer la puissance reçue sur une liaison de télécommunications terrestre ou spatiale ainsi que sur une liaison radar. Pour cela, on fait appel à des notions telles que le gain, la surface équivalente a une antenne et

CG: nf CA: Física – Electromagnetismo – Rayos Gamma; Ciencias Tecnológicas – Tecnología energética; Física Atómica y Nuclear – Energía Nuclear. CT: Otra forma obtener elastómeros de PDMS sin la necesidad de agregar agentes entrecruzantes y catalizadores es mediante el uso de radiación gamma (γ), al ser una radiación altamente

CG: nf CA: Tecnología energética; Fuentes de energía renovables – Energía solar. CT: La energía solar resulta del proceso de fusión nuclear que tiene lugar en el sol. Esta energía es el motor que mueve nuestro medio ambiente, siendo la energía solar que llega a la superficie terrestre 10.000 veces

Véase HUMANTERM: https://humantermuem.es/radiaci%C3%B3n-ultravioleta

CG: nf CA: Ciencias Tecnológicas – Tecnología Energética; Física Atómica y Nuclear – Energía Nuclear. CT: Cuando provocamos la división de un átomo en otros más pequeños, se produce una emisión de radiactividad y una fuerte liberación de energía. Parte de la masa del cuerpo se transforma en energía, de

GC: n CT: Radiant Energy. Atoms absorb energy from an outside source and release (or «emit») this energy as electromagnetic radiation. This radiation can be in the form of waves of many different wavelengths or frequencies. Many energy sources emit radiant energy. The sun and other stars are luminous or

GC: n CT: If you are not familiar with working around radiation or radioactive material, the terms and concepts may confuse you at first. Let’s look at some of the properties of radiation and radioactive material. Radiation – Radiation is energy in the form of waves or particles given off

GC: n CT: An idea to dispose of the waste underground in Antarctica sounded promising: heat from the radioactive decay would melt ice sheets below the waste, causing it to sink. But this plan was abandoned due to international treaties aimed at preserving the near pristine state of the continent.

GC: n CT: Radioactive waste comes mainly from nuclear power production, but also from medicine, research, industry, and agriculture. Radioactive waste is produced in all EU countries and spent fuel in countries with nuclear power programmes and research reactors. While low and medium-level nuclear waste such as from medical equipment

CG : nf CT : En 1896, le physicien français Henri Becquerel constate qu’un élément, l’uranium, est capable d’impressionner une plaque photographique. Deux ans plus tard, Pierre et Marie Curie découvrent deux éléments (le radium et le polonium) émettant une forte dose de rayonnements et donnent à ces éléments le

GC: n CT: The scale of the nuclear disaster in Japan caused by the earthquake and tsunami in March 2011, in terms of releases from the nuclear power stations in Fukushima, was not as great as Chernobyl. Radioactive material released into the atmosphere is dispersed around the world, and indeed

CG: nm CA: Química – Química mineral; Física – Radiactividad; Tecnología energética; Nuclear. CT: En radiactividad no hay márgenes seguros. Es decir, cuanto menos radón respire uno, mejor. Pero, aun así, las variaciones son enormes. En España la media que rodea a una persona en su casa es de 40

GC: n CT: Radon is the main source of exposure to natural radioactivity for humans because it is the only descendant of uranium to exist in a gaseous state. This allows it to leave the surface of a rock containing some uranium and enter the atmosphere. Its ability to escape

CG : nm CT : Le radon est un gaz radioactif d’origine naturelle. Il est issu de la désintégration de l’uranium et du radium présents dans la croûte terrestre. Certains types de roches, notamment le granit, en contiennent davantage. Une fois produit par les roches, le radon peut être transféré

See HUMANTERM. https://humantermuem.es/rainout

CG : nm CT : Option en intelligence artificielle. Les étudiants ayant suivi l’option «Artificial Intelligence» devront être capables de: Identifier et mettre en oeuvre une classe de méthodes et de techniques permettant à un logiciel de résoudre des problèmes complexes qui, résolus par un être humain, nécessitent de l'»intelligence»,

CG : nm CT : Cette approche de l’abduction par la théorie de la rectification des croyances pourrait encore être améliorée selon trois voies : en cherchant à rendre compte par la notion de « pouvoir explicatif » de la sélection des meilleures explications d’un fait, en l’étendant au calcul

GC: n CT: Thermal power plant based on a Rankine cycle. In a simple Rankine cycle, steam is used as the working fluid, generated from saturated liquid water (feed-water). This saturated steam flows through the turbine, where its internal energy is converted into mechanical work to run an electricity generating

GC: pln CT: The rare earth elements (REE) are a set of seventeen metallic elements. These include the fifteen lanthanides on the periodic table plus scandium and yttrium. Rare earth elements are an essential part of many high-tech devices. The U.S. Geological Survey news release «Going Critical» explains: «Rare-earth elements (REE) are necessary components of more than

GC: n CT: With the knowledge that it is of critical economic importance to know the power and therefore energy produced by different types of wind turbine in different conditions, in this exemplar we will calculate the rotational kinetic power produced in a wind turbine at its rated wind speed.

GC: n CT: Every wind turbine design has a cut-in wind speed, a rated wind speed, and a cut-out wind speed. At the cut-in wind speed, the blades start to turn and a trickle of electricity starts to be produced. Around cut-in, the generator may be used as a motor

GC: n CT: The conservation of energy is an essential step we can all take toward overcoming the mounting problems of the worldwide energy crisis and environmental degradation. Although developing countries and countries with economies in transition are very much interested in addressing the issues related to the inefficient power