{"id":201019,"date":"2022-12-26T05:41:15","date_gmt":"2022-12-26T05:41:15","guid":{"rendered":"https:\/\/www.healthbenefitstimes.com\/glossary\/?p=201019"},"modified":"2022-12-26T05:41:15","modified_gmt":"2022-12-26T05:41:15","slug":"invisible-spectrum","status":"publish","type":"post","link":"https:\/\/www.healthbenefitstimes.com\/glossary\/invisible-spectrum\/","title":{"rendered":"Invisible spectrum"},"content":{"rendered":"<p>The portion of the spectrum either below the red (infrared) or above the violet (ultraviolet), which is invisible to the eye, the waves being too long or too short to affect the retina. The invisible spectrum includes rays less than 3900 A in length (ultraviolet, roentgen or x, gamma, and cosmic rays) and those exceeding 7700 A in length (infrared, high-frequency oscillations used in short- and long-wave diathermy, radio, hertzian, and very long waves). These range in length from 7700 A to 5,000,000 m.<\/p>\n<hr \/>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The portion of the spectrum either below the red (infrared) or above the violet (ultraviolet), which is invisible to the eye, the waves being too long or too short to affect the retina. The invisible spectrum includes rays less than 3900 A in length (ultraviolet, roentgen or x, gamma, and cosmic rays) and those exceeding [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9],"tags":[],"class_list":["post-201019","post","type-post","status-publish","format-standard","hentry","category-i"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Invisible spectrum - Definition of Invisible spectrum<\/title>\n<meta name=\"description\" content=\"The portion of the spectrum either below the red (infrared) or above the violet (ultraviolet), which is invisible to the eye, the waves being too long or too short to affect the retina. The invisible spectrum includes rays less than 3900 A in length (ultraviolet, roentgen or x, gamma, and cosmic rays) and those exceeding 7700 A in length (infrared, high-frequency oscillations used in short- and long-wave diathermy, radio, hertzian, and very long waves). These range in length from 7700 A to 5,000,000 m.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.healthbenefitstimes.com\/glossary\/invisible-spectrum\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Invisible spectrum - Definition of Invisible spectrum\" \/>\n<meta property=\"og:description\" content=\"The portion of the spectrum either below the red (infrared) or above the violet (ultraviolet), which is invisible to the eye, the waves being too long or too short to affect the retina. The invisible spectrum includes rays less than 3900 A in length (ultraviolet, roentgen or x, gamma, and cosmic rays) and those exceeding 7700 A in length (infrared, high-frequency oscillations used in short- and long-wave diathermy, radio, hertzian, and very long waves). 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