{"id":848,"date":"2011-02-15T15:16:39","date_gmt":"2011-02-15T05:16:39","guid":{"rendered":"http:\/\/blog.dbohs.com\/?p=848"},"modified":"2015-12-17T12:18:21","modified_gmt":"2015-12-17T02:18:21","slug":"radiation-vs-fields","status":"publish","type":"post","link":"https:\/\/blog.dbohs.com\/?p=848","title":{"rendered":"Radiation vs Fields with underfloor heating"},"content":{"rendered":"<p>I am planning a bathroom renovation and thought than underfloor heating in winter would be nice.<\/p>\n<p>I found two local websites for underfloor heating and both claim to have &#8220;no EMR&#8221;. This would be expected, even with a design optimised to radiate at 50 Hz,<!--more--> as the size of the antenna is limited by the size of the bathroom.<\/p>\n<p style=\"text-align: center;\">\n<p>Like suburban power lines, the underfloor heating elements would not produce much radiation at all. A claim to protect against dragons and flying pigs would be equally relevant.<\/p>\n<p>Electromagnetic fields are another matter. The current through the heater produces the magnetic field, and for a 250W heater this is about 1 A, a relatively small current. The electric field strength relates to the voltage (240 V) and would be attenuated by the floor covering, particularly when it is moist or wet.<\/p>\n<p>Its surprising how many times people get confused between electromagnetic radiation and electromagnetic fields.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Claims that underfloor heating produce no electrmagnetic radiation are spurious, as there is no appreciable radiation with an antenna the size of a room. Electromagnetic fields &#8211; electric and magnetic are another matter, but it is likely only magnetic fields at 50Hz would be an issue.<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[23],"tags":[157,155,154,156,153,158],"class_list":["post-848","post","type-post","status-publish","format-standard","category-radiation","tag-electric-fields","tag-electromagnetic-felids","tag-emr","tag-magneric-feidks","tag-readiatio","tag-under-floor-heating","czr-hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.0.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"Claims that underfloor heating produce no electrmagnetic radiation are spurious, as there is no appreciable radiation with an antenna the size of a room. Electromagnetic fields - electric and magnetic are another matter, but it is likely only magnetic fields at 50Hz would be an issue.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"admin\"\/>\n\t<link rel=\"canonical\" href=\"https:\/\/blog.dbohs.com\/?p=848\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 5.0.0.1\" \/>\n\t\t<meta property=\"og:locale\" content=\"en_US\" \/>\n\t\t<meta property=\"og:site_name\" content=\"Wild and Woolly | Occupational Hygiene - and Ideas\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"Radiation vs Fields with underfloor heating | Wild and Woolly\" \/>\n\t\t<meta property=\"og:description\" content=\"Claims that underfloor heating produce no electrmagnetic radiation are spurious, as there is no appreciable radiation with an antenna the size of a room. Electromagnetic fields - electric and magnetic are another matter, but it is likely only magnetic fields at 50Hz would be an issue.\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/blog.dbohs.com\/?p=848\" \/>\n\t\t<meta property=\"og:image\" content=\"https:\/\/blog.dbohs.com\/wordpress\/wp-content\/uploads\/Wild-and-Woolley.png\" \/>\n\t\t<meta property=\"og:image:secure_url\" content=\"https:\/\/blog.dbohs.com\/wordpress\/wp-content\/uploads\/Wild-and-Woolley.png\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2011-02-15T05:16:39+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2015-12-17T02:18:21+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary\" \/>\n\t\t<meta name=\"twitter:title\" content=\"Radiation vs Fields with underfloor heating | Wild and Woolly\" \/>\n\t\t<meta name=\"twitter:description\" content=\"Claims that underfloor heating produce no electrmagnetic radiation are spurious, as there is no appreciable radiation with an antenna the size of a room. Electromagnetic fields - electric and magnetic are another matter, but it is likely only magnetic fields at 50Hz would be an issue.\" \/>\n\t\t<meta name=\"twitter:image\" content=\"https:\/\/blog.dbohs.com\/wordpress\/wp-content\/uploads\/Wild-and-Woolley.png\" \/>\n\t\t<script type=\"application\/ld+json\" class=\"aioseo-schema\">\n\t\t\t{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/blog.dbohs.com\\\/?p=848#article\",\"name\":\"Radiation vs Fields with underfloor heating | Wild and Woolly\",\"headline\":\"Radiation vs Fields with underfloor heating\",\"author\":{\"@id\":\"https:\\\/\\\/blog.dbohs.com\\\/?author=3#author\"},\"publisher\":{\"@id\":\"https:\\\/\\\/blog.dbohs.com\\\/#person\"},\"image\":{\"@type\":\"ImageObject\",\"@id\":\"https:\\\/\\\/blog.dbohs.com\\\/?p=848#articleImage\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/dbaa9fe1c0960938d10f73a45ec32fd7403e987878d09a42c397c59a61da66f2?s=96&d=mm&r=g\",\"width\":96,\"height\":96,\"caption\":\"admin\"},\"datePublished\":\"2011-02-15T15:16:39+10:00\",\"dateModified\":\"2015-12-17T12:18:21+10:00\",\"inLanguage\":\"en-US\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/blog.dbohs.com\\\/?p=848#webpage\"},\"isPartOf\":{\"@id\":\"https:\\\/\\\/blog.dbohs.com\\\/?p=848#webpage\"},\"articleSection\":\"Radiation, electric fields, electromagnetic felids, EMR, magneric feidks, readiatio, under floor heating\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/blog.dbohs.com\\\/?p=848#breadcrumblist\",\"itemListElement\":[{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/blog.dbohs.com#listItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/blog.dbohs.com\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/blog.dbohs.com\\\/?cat=23#listItem\",\"name\":\"Radiation\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/blog.dbohs.com\\\/?cat=23#listItem\",\"position\":2,\"name\":\"Radiation\",\"item\":\"https:\\\/\\\/blog.dbohs.com\\\/?cat=23\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/blog.dbohs.com\\\/?p=848#listItem\",\"name\":\"Radiation vs Fields with underfloor heating\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/blog.dbohs.com#listItem\",\"name\":\"Home\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/blog.dbohs.com\\\/?p=848#listItem\",\"position\":3,\"name\":\"Radiation vs Fields with underfloor heating\",\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/blog.dbohs.com\\\/?cat=23#listItem\",\"name\":\"Radiation\"}}]},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/blog.dbohs.com\\\/#person\",\"name\":\"David Bromwich\",\"image\":{\"@type\":\"ImageObject\",\"@id\":\"https:\\\/\\\/blog.dbohs.com\\\/?p=848#personImage\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/b95a4b8562be54c8b766757dc9e19aaf5bd9c83ce051490cda1caf3077fc8e68?s=96&d=mm&r=g\",\"width\":96,\"height\":96,\"caption\":\"David Bromwich\"}},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/blog.dbohs.com\\\/?author=3#author\",\"url\":\"https:\\\/\\\/blog.dbohs.com\\\/?author=3\",\"name\":\"admin\",\"image\":{\"@type\":\"ImageObject\",\"@id\":\"https:\\\/\\\/blog.dbohs.com\\\/?p=848#authorImage\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/dbaa9fe1c0960938d10f73a45ec32fd7403e987878d09a42c397c59a61da66f2?s=96&d=mm&r=g\",\"width\":96,\"height\":96,\"caption\":\"admin\"}},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/blog.dbohs.com\\\/?p=848#webpage\",\"url\":\"https:\\\/\\\/blog.dbohs.com\\\/?p=848\",\"name\":\"Radiation vs Fields with underfloor heating | Wild and Woolly\",\"description\":\"Claims that underfloor heating produce no electrmagnetic radiation are spurious, as there is no appreciable radiation with an antenna the size of a room. 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