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radiactividad - translation to English
radiactividad
n. radioactivity, emission of energy due to atomic decay, production of radiation as a result of atomic breakdown
radiactividad
radioactivity
radioactivity
![[[Alpha particle]]s may be completely stopped by a sheet of paper, [[beta particle]]s by aluminium shielding. [[Gamma ray]]s can only be reduced by much more substantial mass, such as a very thick layer of [[lead]].](https://commons.wikimedia.org/wiki/Special:FilePath/Alfa beta gamma radiation.svg?width=200 "[[Alpha particle]]s may be completely stopped by a sheet of paper, [[beta particle]]s by aluminium shielding. [[Gamma ray]]s can only be reduced by much more substantial mass, such as a very thick layer of [[lead]].")
![Taking an X-ray image with early [[Crookes tube]] apparatus in 1896. The Crookes tube is visible in the centre. The standing man is viewing his hand with a [[fluoroscope]] screen; this was a common way of setting up the tube. No precautions against radiation exposure are being taken; its hazards were not known at the time.](https://commons.wikimedia.org/wiki/Special:FilePath/Crookes tube xray experiment.jpg?width=200 "Taking an X-ray image with early [[Crookes tube]] apparatus in 1896. The Crookes tube is visible in the centre. The standing man is viewing his hand with a [[fluoroscope]] screen; this was a common way of setting up the tube. No precautions against radiation exposure are being taken; its hazards were not known at the time.")
![Gamma-ray energy spectrum]] of uranium ore (inset). Gamma-rays are emitted by decaying [[nuclide]]s, and the gamma-ray energy can be used to characterize the decay (which nuclide is decaying to which). Here, using the gamma-ray spectrum, several nuclides that are typical of the decay chain of <sup>238</sup>U have been identified: <sup>226</sup>Ra, <sup>214</sup>Pb, <sup>214</sup>Bi.](https://commons.wikimedia.org/wiki/Special:FilePath/Gammaspektrum Uranerz.jpg?width=200 "Gamma-ray energy spectrum]] of uranium ore (inset). Gamma-rays are emitted by decaying [[nuclide]]s, and the gamma-ray energy can be used to characterize the decay (which nuclide is decaying to which). Here, using the gamma-ray spectrum, several nuclides that are typical of the decay chain of <sup>238</sup>U have been identified: <sup>226</sup>Ra, <sup>214</sup>Pb, <sup>214</sup>Bi.")
![half-lives]] have elapsed.](https://commons.wikimedia.org/wiki/Special:FilePath/Halflife-sim.gif?width=200 "half-lives]] have elapsed.")
![n<sup>0</sup>]] emissions, EC denotes [[electron capture]]).](https://commons.wikimedia.org/wiki/Special:FilePath/Radioactive decay modes.svg?width=200 "n<sup>0</sup>]] emissions, EC denotes [[electron capture]]).")
![2007 ISO radioactivity [[hazard symbol]] intended for IAEA Category 1, 2 and 3 sources defined as dangerous sources capable of death or serious injury[http://www.iaea.org/newscenter/news/2007/radiationsymbol.html IAEA news release Feb 2007]](https://commons.wikimedia.org/wiki/Special:FilePath/Logo iso radiation.svg?width=200 "2007 ISO radioactivity [[hazard symbol]] intended for IAEA Category 1, 2 and 3 sources defined as dangerous sources capable of death or serious injury[http://www.iaea.org/newscenter/news/2007/radiationsymbol.html IAEA news release Feb 2007]")
PROCESS BY WHICH AN UNSTABLE ATOM EMITS RADIATION
Radioactivity; Radioactive; Decay mode; Nuclear decay; Nuclear Decay; Activity (radioactivity); Subnuclear transformation; Atomic Decay; Atomic decay; Nuclear Radiation; Becquerel Rays; Radioactive Decay; Radioactivite; Decay rate; Total activity; Elements, radioactive; Radio activity; Radiation, nuclear; Change of decay rate; Radiation, Radioactivity; Nuclear disintegration; Radioelement; Decay, radioactive; Table of radioactive decay; Decay law for radioactivity; Radioative process; Radioactive process; Radioactive decay law; Szilard–Chalmers effect; Szilard-Chalmers Effect; Solar influence on radioactive decay; Quantum decay; Szilard-Chalmers effect; Decay activity; Radioactive disintegration
radiactividad
Definition
radiactividad
sust. fem.
Física. Calidad de radiactivo. Se mide por el número de desintegraciones que se producen cada segundo. Su unidad es el curio, que equivale a 37.000 millones de desintegraciones por segundo.
Wikipedia
Radiactividad
La radiactividad (también conocida como radioactividad, radiación nuclear o desintegración nuclear) es el proceso por el cual un núcleo atómico inestable pierde energía mediante la emisión de radiación, como una partícula alfa, partícula beta con neutrino o solo un neutrino en el caso de la captura electrónica, o un rayo gamma o electrón en el caso de conversión interna. Un material que contiene estos núcleos inestables se considera radiactivo.
Examples of use of radiactividad
1. Preguntas sin respuesta ¿Cuánta radiactividad emitió Ascó I al exterior?
2. Cuarenta y dos años después del accidente de Palomares (Almería), la radiactividad sigue allí.
3. La emisión de la radiactividad a la atmósfera se inició el 2' de noviembre de 2007, según los ecologistas.
4. Propiedades como la elasticidad, la radiactividad o el calor se comportan a esa escala de distinta manera a la que percibe el ojo humano.
5. La radiactividad del presidente es de tal intensidad que contamina a quienes han estado demasiado tiempo en su mismo ambiente, incluyendo a sus enemigos.