{"id":29342,"date":"2022-01-28T10:35:14","date_gmt":"2022-01-28T09:35:14","guid":{"rendered":"https:\/\/rinconeducativo.org\/recursos-educativos\/las-radiaciones\/"},"modified":"2024-12-17T11:57:46","modified_gmt":"2024-12-17T10:57:46","slug":"what-do-you-know-about-radiation","status":"publish","type":"re_recurso","link":"https:\/\/rinconeducativo.org\/en\/recursos-educativos\/what-do-you-know-about-radiation\/","title":{"rendered":"What do you know about radiation?"},"content":{"rendered":"\n<p><strong>Radiation<\/strong>&nbsp;is the emission, propagation, and transference of energy through any medium, in the form of electromagnetic waves or particles.<\/p>\n\n\n\n<p>An electromagnetic wave is a way to transport energy (for example, the heat transmitted by the light of the Sun).<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Classification of electromagnetic radiation<\/h2>\n\n\n\n<p>Electromagnetic waves or radiations can be classified into:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Non-ionizing<\/strong> radiation:&nbsp;They lack enough energy to break the links that hold together the atoms of the medium they irradiate (radio waves and TV, microwaves, visible light, etc.).<\/li>\n\n\n\n<li><strong>Ionizing radiation:<\/strong>&nbsp;They have enough energy to produce ionizations of the atoms in the irradiated medium or matter. They range from X-rays to cosmic radiation.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Classification of ionizing radiations<\/h2>\n\n\n\n<p>Radioactivity is a physical phenomenon whereby some chemical elements or bodies known as radioactive emit radiations that have the property of exposing photographic plates, ionizing gasses, producing fluorescence, etcetera.<\/p>\n\n\n\n<p>It is one of the great discoveries of contemporary man. Along with its effects, greatly useful applications were discovered since radioactive substances or ionizing radioactivity emitting instruments are irreplaceable in medicine, agriculture, industry, Earth sciences, biology, and many other fields.<\/p>\n\n\n\n<p>The emission of ionizing radiations is a common characteristic for many atoms in whose nucleus the number of neutrons is scarce or excessive, which makes them stable (radioactive). This leads to the transformation of their nuclear links as they seek more stable configurations, at the same time liberating energy associated to the emitted radiation.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Types of radiations<\/h2>\n\n\n\n<p>According to their interaction with matter:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Alpha:<\/strong>&nbsp;With limited capacity to penetrate matter but high energy density.<\/li>\n\n\n\n<li><strong>Beta:<\/strong>&nbsp;Somewhat more penetrating, but less intense than alpha radiations.<\/li>\n\n\n\n<li><strong>Gamma:<\/strong>&nbsp;The most penetrating radiation of all.<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter is-resized\"><a href=\"https:\/\/www.foronuclear.org\/wp-content\/uploads\/2013\/08\/radiations-infographic.png?x28294\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.foronuclear.org\/wp-content\/uploads\/2013\/08\/radiations-infographic.png?x28294\" alt=\"What do you know about radiation?\" width=\"413\" height=\"330\"\/><\/a><\/figure>\n<\/div>\n\n\n<h2 class=\"wp-block-heading\">Origin of radiations<\/h2>\n\n\n\n<p>People are continually exposed to ionizing radiation. Some of these radiations come from nature, without any human interaction in their production, and others are originated by human actions.<\/p>\n\n\n\n<p>On average, the dose derived from natural radiation received by a person in Spain is around 2.4 mSv\/year<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Natural causes<\/h2>\n\n\n\n<p>Natural radioactivity can be derived from three different causes:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Outer space (cosmic radiation):<\/strong>&nbsp;These radiations reach Earth every second (protons (86%) and alpha particles (12%)). Since the atmosphere partially absorbs radiations, the natural base due to this cause varies according to altitude, in such a way that it is less below sea level than atop a mountain. To the world average, cosmic radiation amounts to 10% of the dose.<\/li>\n\n\n\n<li><strong>The Earth\u2019s crust:<\/strong>&nbsp;14% of the world\u2019s average dose.<\/li>\n\n\n\n<li><strong>Human organism:<\/strong>&nbsp;Mainly carbon and potassium isotopes, contributing to approximately 52% of the world\u2019s average dose.<\/li>\n<\/ul>\n\n\n\n<p>On average, the dose derived from natural radiation received by a person in Spain is around 2.4 mSv\/year.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Artificial causes<\/h2>\n\n\n\n<p>They are the result of exposition to diverse non-natural sources, such as radiological explorations with medical purposes (the majority of sources, deliver doses to the population similar to those of cosmic radiation), air travel (in this case, the greatest cosmic radiation doses received are in high-altitude flights), etcetera.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Factors that determine a higher or lower radiation dose<\/h2>\n\n\n\n<p>The radiation dose received by an individual located near a radiation source depends on three factors:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The distance between the radiation and the individual: the dose received proportionally decreases as the distance between the individual and the source increases.<\/li>\n\n\n\n<li>The Time of permanence: the dose received increases in proportion to the time of exposition to radiation.<\/li>\n\n\n\n<li>The Shielding between the radiation source and the individual: Shielding reduces exposition to ionizing radiation in persons who are near a radiation source.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Sources and effects of radiation doses<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><th><\/th><th>Milisievert (mSv)<\/th><\/tr><tr><td>Average exposition in a year<\/td><td><strong>2.4<\/strong><\/td><\/tr><tr><td>New York \u2013 London flight<\/td><td><strong>0.06<\/strong><\/td><\/tr><tr><td>Thorax X-ray<\/td><td><strong>0.1<\/strong><\/td><\/tr><tr><td>Mamography (two visits)<\/td><td><strong>0.72<\/strong><\/td><\/tr><tr><td>Abdominal X-ray<\/td><td><strong>7<\/strong><\/td><\/tr><tr><td>Cosmic radiation<\/td><td><strong>260 (above sea level)<br>400 (1,000 m above sea level)<br>650 (2,000 m above sea level)<\/strong><\/td><\/tr><tr><td>Home<\/td><td><strong>70<\/strong><\/td><\/tr><tr><td>General environment<\/td><td><strong>400<\/strong><\/td><\/tr><tr><td>Food and water<\/td><td><strong>400 (natural origin)<\/strong><\/td><\/tr><tr><td>Television (1h\/day)<\/td><td><strong>10<\/strong><\/td><\/tr><tr><td>Computer screen (8h\/day)<\/td><td><strong>10<\/strong><\/td><\/tr><tr><td>Airplane flight (10,000 m high)<\/td><td><strong>5<\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Radiation doses (mSv) and their effects<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><th><\/th><th>Milisievert (mSv)<\/th><\/tr><tr><td>Dose limit by law<\/td><td><strong>20<\/strong><\/td><\/tr><tr><td>Dose value that could entail risk c\u00e1ncer<\/td><td><strong>250<\/strong><\/td><\/tr><tr><td>Dose value that could cause serious illness<\/td><td><strong>1,000<\/strong><\/td><\/tr><tr><td>Dose value that could casue death within a month<\/td><td><strong>5,000<\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>What do you know about radiation? Radiation\u00a0is the emission, propagation, and transference of energy through any medium, in the form of electromagnetic waves or particles.<br \/>\nAn electromagnetic wave is a way to transport energy (for example, the heat transmitted by the light of the Sun).<\/p>\n","protected":false},"author":1088,"featured_media":10273,"template":"","meta":{"_acf_changed":false,"footnotes":""},"tags":[8230,7792,8471,7146,8544],"edad":[7139,7161,7137,7140],"recursos_tipo":[7270],"recursos_tema":[7170,7153],"clasificacion_anterior":[],"class_list":["post-29342","re_recurso","type-re_recurso","status-publish","has-post-thumbnail","hentry","tag-nuclear-energy","tag-nuclear-fission-en","tag-nuclear-technology-applications","tag-radiation-en","tag-radiological-protection","edad-mas-16-en","edad-06-12-years-old","edad-de-12-a-16-en","edad-todas-las-edades-en","recursos_tipo-theory","recursos_tema-applications","recursos_tema-radiation-and-x-rays"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>What do you know about radiation? - Rinc\u00f3n educativo<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/rinconeducativo.org\/en\/recursos-educativos\/what-do-you-know-about-radiation\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What do you know about radiation? - Rinc\u00f3n educativo\" \/>\n<meta property=\"og:description\" content=\"What do you know about radiation? 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