{"id":18044,"date":"2022-08-23T10:22:26","date_gmt":"2022-08-23T08:22:26","guid":{"rendered":"https:\/\/book2net.net\/2022\/08\/23\/lumen\/"},"modified":"2022-08-23T10:49:25","modified_gmt":"2022-08-23T08:49:25","slug":"lumen","status":"publish","type":"post","link":"https:\/\/book2net.net\/en\/2022\/08\/23\/lumen\/","title":{"rendered":"Lumen"},"content":{"rendered":"\n<p><span style=\"font-size: 120%;\">Lumen (lm) is the internationally standardized unit of measurement for the luminous flux of a light source and thus allows conclusions to be drawn about the brightness of the illuminant. Colloquially, one also speaks of the light output of a lamp.<\/span><\/p>\n<p><span style=\"font-size: 120%;\">The luminous flux indicates the amount of light generated per unit of time; the unit of time is quasi = 0 due to the speed of light of 300,000 km\/second, since the speed of light forms our perceptual limit.<\/span><\/p>\n<p><span style=\"font-size: 120%;\">Lumen is not to be confused with the unit for illuminance lux, which indicates how much light per unit of time is incident on a unit of area, i.e. the amount of brightness on\/at an illuminated surface.<\/span><\/p>\n\t<div id=\"gap-1992162039\" class=\"gap-element clearfix\" style=\"display:block; height:auto;\">\n\t\t\n<style>\n#gap-1992162039 {\n  padding-top: 30px;\n}\n<\/style>\n\t<\/div>\n\t\n\n<div class=\"row\"  id=\"row-1180859130\">\n\n\n\t<div id=\"col-714308507\" class=\"col small-12 large-12\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n\t<div id=\"gap-1138106664\" class=\"gap-element clearfix\" style=\"display:block; height:auto;\">\n\t\t\n<style>\n#gap-1138106664 {\n  padding-top: 30px;\n}\n<\/style>\n\t<\/div>\n\t\n\n<div class=\"container section-title-container\" ><h3 class=\"section-title section-title-normal\"><b><\/b><span class=\"section-title-main\" >Related Topics<\/span><b><\/b><\/h3><\/div>\n\n\n  \n    <div class=\"row large-columns-3 medium-columns-1 small-columns-1 has-shadow row-box-shadow-2 row-box-shadow-5-hover slider row-slider slider-nav-reveal slider-nav-push\"  data-flickity-options='{&quot;imagesLoaded&quot;: true, &quot;groupCells&quot;: &quot;100%&quot;, &quot;dragThreshold&quot; : 5, &quot;cellAlign&quot;: &quot;left&quot;,&quot;wrapAround&quot;: true,&quot;prevNextButtons&quot;: true,&quot;percentPosition&quot;: true,&quot;pageDots&quot;: false, &quot;rightToLeft&quot;: false, &quot;autoPlay&quot; : false}' >\n\n  <div class=\"col post-item\" >\n\t\t\t<div class=\"col-inner\">\n\t\t\t\t<div class=\"box box-normal box-text-bottom box-blog-post has-hover\">\n          \t\t\t\t\t<div class=\"box-text text-left\" >\n\t\t\t\t\t<div class=\"box-text-inner blog-post-inner\">\n\n\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t<h5 class=\"post-title is-large \">\n\t\t\t\t\t\t<a href=\"https:\/\/book2net.net\/en\/2022\/08\/23\/candela\/\" class=\"plain\">Candela<\/a>\n\t\t\t\t\t<\/h5>\n\t\t\t\t\t\t\t\t\t\t<div class=\"is-divider\"><\/div>\n\t\t\t\t\t\t\t\t\t\t<p class=\"from_the_blog_excerpt \">\n\t\t\t\t\t\tCandela (cd) is an internationally standardized physical unit of measurement [...]\t\t\t\t\t<\/p>\n\t\t\t\t\t                    \n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/book2net.net\/en\/2022\/08\/23\/candela\/\" class=\"button  is-underline is-large mb-0\">\n\t\t\t\t\t\t\tREAD MORE\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/div><div class=\"col post-item\" >\n\t\t\t<div class=\"col-inner\">\n\t\t\t\t<div class=\"box box-normal box-text-bottom box-blog-post has-hover\">\n          \t\t\t\t\t<div class=\"box-text text-left\" >\n\t\t\t\t\t<div class=\"box-text-inner blog-post-inner\">\n\n\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t<h5 class=\"post-title is-large \">\n\t\t\t\t\t\t<a href=\"https:\/\/book2net.net\/en\/2022\/08\/23\/lux\/\" class=\"plain\">Lux<\/a>\n\t\t\t\t\t<\/h5>\n\t\t\t\t\t\t\t\t\t\t<div class=\"is-divider\"><\/div>\n\t\t\t\t\t\t\t\t\t\t<p class=\"from_the_blog_excerpt \">\n\t\t\t\t\t\tLux (lx) is the internationally standardized physical unit of measurement [...]\t\t\t\t\t<\/p>\n\t\t\t\t\t                    \n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/book2net.net\/en\/2022\/08\/23\/lux\/\" class=\"button  is-underline is-large mb-0\">\n\t\t\t\t\t\t\tREAD MORE\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/div><div class=\"col post-item\" >\n\t\t\t<div class=\"col-inner\">\n\t\t\t\t<div class=\"box box-normal box-text-bottom box-blog-post has-hover\">\n          \t\t\t\t\t<div class=\"box-text text-left\" >\n\t\t\t\t\t<div class=\"box-text-inner blog-post-inner\">\n\n\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t<h5 class=\"post-title is-large \">\n\t\t\t\t\t\t<a href=\"https:\/\/book2net.net\/en\/2022\/08\/23\/luminous-efficacy\/\" class=\"plain\">Luminous efficacy<\/a>\n\t\t\t\t\t<\/h5>\n\t\t\t\t\t\t\t\t\t\t<div class=\"is-divider\"><\/div>\n\t\t\t\t\t\t\t\t\t\t<p class=\"from_the_blog_excerpt \">\n\t\t\t\t\t\tThe luminous efficacy of a light source is its efficiency [...]\t\t\t\t\t<\/p>\n\t\t\t\t\t                    \n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/book2net.net\/en\/2022\/08\/23\/luminous-efficacy\/\" class=\"button  is-underline is-large mb-0\">\n\t\t\t\t\t\t\tREAD MORE\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/div><\/div>\n\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n<\/div>\n\n","protected":false},"excerpt":{"rendered":"<p>Lumen (lm) is the internationally standardized unit of measurement for the luminous flux of a light source and thus allows conclusions to be drawn about the brightness of the illuminant. Colloquially, one also speaks of the light output of a lamp.<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","footnotes":""},"categories":[279,308],"tags":[],"class_list":["post-18044","post","type-post","status-publish","format-standard","hentry","category-glossary","category-l-glossary"],"featured_image_src":null,"author_info":{"display_name":"Karin","author_link":"https:\/\/book2net.net\/en\/author\/karin\/"},"spectra_custom_meta":{"_encloseme":["1"],"_wpml_media_duplicate":["1"],"_wpml_media_featured":["1"],"_top_nav_excluded":[""],"_cms_nav_minihome":[""],"_last_translation_edit_mode":["translation-editor"],"_edit_lock":["1661244533:3"],"_edit_last":["3"],"_yoast_wpseo_linkdex":["44"],"_yoast_wpseo_content_score":["30"],"_yoast_wpseo_estimated-reading-time-minutes":["1"],"_yoast_wpseo_wordproof_timestamp":[""],"_thumbnail_id":[""],"_yoast_wpseo_focuskw":["Lumen"],"_yoast_wpseo_primary_category":["253"],"_wpml_word_count":["149"],"_uag_page_assets":["a:9:{s:3:\"css\";s:263:\".uag-blocks-common-selector{z-index:var(--z-index-desktop) !important}@media (max-width: 976px){.uag-blocks-common-selector{z-index:var(--z-index-tablet) !important}}@media (max-width: 767px){.uag-blocks-common-selector{z-index:var(--z-index-mobile) !important}}\n\";s:2:\"js\";s:0:\"\";s:18:\"current_block_list\";a:1:{i:0;s:18:\"flatsome\/uxbuilder\";}s:8:\"uag_flag\";b:0;s:11:\"uag_version\";s:10:\"1786869658\";s:6:\"gfonts\";a:0:{}s:10:\"gfonts_url\";s:0:\"\";s:12:\"gfonts_files\";a:0:{}s:14:\"uag_faq_layout\";b:0;}"],"_uag_css_file_name":["uag-css-18044.css"],"_elementor_page_assets":["a:0:{}"]},"uagb_featured_image_src":{"full":false,"thumbnail":false,"medium":false,"medium_large":false,"large":false,"1536x1536":false,"2048x2048":false,"qi_blocks_image_size_square":false,"qi_blocks_image_size_landscape":false,"qi_blocks_image_size_portrait":false,"qi_blocks_image_size_huge_square":false},"uagb_author_info":{"display_name":"Karin","author_link":"https:\/\/book2net.net\/en\/author\/karin\/"},"uagb_comment_info":0,"uagb_excerpt":"Lumen (lm) is the internationally standardized unit of measurement for the luminous flux of a light source and thus allows conclusions to be drawn about the brightness of the illuminant. Colloquially, one also speaks of the light output of a lamp.","_links":{"self":[{"href":"https:\/\/book2net.net\/en\/wp-json\/wp\/v2\/posts\/18044","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/book2net.net\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/book2net.net\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/book2net.net\/en\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/book2net.net\/en\/wp-json\/wp\/v2\/comments?post=18044"}],"version-history":[{"count":7,"href":"https:\/\/book2net.net\/en\/wp-json\/wp\/v2\/posts\/18044\/revisions"}],"predecessor-version":[{"id":18073,"href":"https:\/\/book2net.net\/en\/wp-json\/wp\/v2\/posts\/18044\/revisions\/18073"}],"wp:attachment":[{"href":"https:\/\/book2net.net\/en\/wp-json\/wp\/v2\/media?parent=18044"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/book2net.net\/en\/wp-json\/wp\/v2\/categories?post=18044"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/book2net.net\/en\/wp-json\/wp\/v2\/tags?post=18044"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}