{"id":5289,"date":"2025-07-29T00:36:47","date_gmt":"2025-07-29T00:36:47","guid":{"rendered":"https:\/\/prillumen.com\/?p=5289"},"modified":"2025-07-29T00:36:47","modified_gmt":"2025-07-29T00:36:47","slug":"basic-lighting-knowledge1","status":"publish","type":"post","link":"https:\/\/prillumen.com\/eo\/blog\/basic-lighting-knowledge1\/","title":{"rendered":"Basic Lighting Knowledge(1)"},"content":{"rendered":"<div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-1 fusion-flex-container has-pattern-background has-mask-background nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-start fusion-flex-content-wrap\" style=\"max-width:1248px;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-0 fusion_builder_column_1_1 1_1 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:100%;--awb-margin-top-large:0px;--awb-spacing-right-large:1.92%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:1.92%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-text fusion-text-1\"><p class=\"my-0\">Lighting plays a crucial role in our daily lives, affecting not just how we see, but also our comfort and productivity. In this blog post, we\u2019ll answer the 10 most common questions about basic lighting knowledge. Whether you\u2019re an industry professional or a homeowner, understanding these concepts will help you make informed decisions about lighting solutions.<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Enhava Tabelo<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">\u015calti<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/prillumen.com\/eo\/blog\/basic-lighting-knowledge1\/#1_What_is_a_Lumen\" >1. What is a Lumen?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/prillumen.com\/eo\/blog\/basic-lighting-knowledge1\/#2_The_Role_of_Color_Temperature_Kelvin_in_Lighting\" >2. The Role of Color Temperature (Kelvin) in Lighting<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/prillumen.com\/eo\/blog\/basic-lighting-knowledge1\/#3_How_Does_the_Color_Rendering_Index_CRI_Affect_Lighting_Quality\" >3. How Does the Color Rendering Index (CRI) Affect Lighting Quality?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/prillumen.com\/eo\/blog\/basic-lighting-knowledge1\/#4_Beam_Angle_and_Choosing_the_Right_Application\" >4. Beam Angle and Choosing the Right Application<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/prillumen.com\/eo\/blog\/basic-lighting-knowledge1\/#5_LED_vs_Traditional_Bulbs\" >5. LED vs. Traditional Bulbs<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/prillumen.com\/eo\/blog\/basic-lighting-knowledge1\/#6_What_is_UGR_Unified_Glare_Rating\" >6. What is UGR (Unified Glare Rating)?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/prillumen.com\/eo\/blog\/basic-lighting-knowledge1\/#7_The_Significance_of_IP_Ratings_in_Waterproof_and_Dustproof_Fixtures\" >7. The Significance of IP Ratings in Waterproof and Dustproof Fixtures<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/prillumen.com\/eo\/blog\/basic-lighting-knowledge1\/#8_Understanding_the_Relationship_Between_Watt_and_Brightness\" >8. Understanding the Relationship Between Watt and Brightness<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/prillumen.com\/eo\/blog\/basic-lighting-knowledge1\/#9_What_is_Power_Factor\" >9. What is Power Factor?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/prillumen.com\/eo\/blog\/basic-lighting-knowledge1\/#10_Differences_Between_AC_and_DC_Lighting_Fixtures\" >10. Differences Between AC and DC Lighting Fixtures<\/a><\/li><\/ul><\/nav><\/div>\n<h2 id=\"1-what-is-a-lumen\" class=\"mb-2 mt-6 text-base font-&#091;500&#093; first:mt-0 md:text-lg dark:font-&#091;475&#093; &#091;hr+&amp;&#093;:mt-4\"><span class=\"ez-toc-section\" id=\"1_What_is_a_Lumen\"><\/span>1. What is a Lumen?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"my-0\">A\u00a0<strong>lumen<\/strong>\u00a0(lm) is a unit that measures the total amount of visible light emitted by a source. The higher the lumen rating, the brighter the light. Lumen is now the primary metric for describing lamp brightness in modern lighting, replacing the outdated \u201cwattage equals brightness\u201d concept.<\/p>\n<h2 id=\"2-the-role-of-color-temperature-kelvin-in-lighting\" class=\"mb-2 mt-6 text-base font-&#091;500&#093; first:mt-0 md:text-lg dark:font-&#091;475&#093; &#091;hr+&amp;&#093;:mt-4\"><span class=\"ez-toc-section\" id=\"2_The_Role_of_Color_Temperature_Kelvin_in_Lighting\"><\/span>2. The Role of Color Temperature (Kelvin) in Lighting<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"my-0\"><strong>Kolora temperaturo<\/strong>, measured in Kelvin (K), describes the appearance of the light produced by a bulb:<\/p>\n<ul>\n<li class=\"my-0\"><em>Varma blanka<\/em>\u00a0(2,700K-3,000K): Soft, yellowish light; ideal for homes and hospitality.<\/li>\n<li class=\"my-0\"><em>Neutral white<\/em>\u00a0(3,500K-4,100K): Balanced, natural light; suitable for offices and retail.<\/li>\n<li class=\"my-0\"><em>Malvarma blanka<\/em>\u00a0(5,000K-6,500K): Bluish, crisp light; used in surgeries, factories, and some outdoor areas.<\/li>\n<li class=\"my-0\">The right color temperature enhances ambiance and functionality for the intended space.<\/li>\n<\/ul>\n<h2 id=\"3-how-does-the-color-rendering-index-cri-affect-li\" class=\"mb-2 mt-6 text-base font-&#091;500&#093; first:mt-0 md:text-lg dark:font-&#091;475&#093; &#091;hr+&amp;&#093;:mt-4\"><span class=\"ez-toc-section\" id=\"3_How_Does_the_Color_Rendering_Index_CRI_Affect_Lighting_Quality\"><\/span>3. How Does the Color Rendering Index (CRI) Affect Lighting Quality?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"my-0\">La\u00a0<strong>Indekso de Kolora Reproduktado (CRI)<\/strong>\u00a0measures a light source\u2019s ability to reveal the true colors of objects compared to natural sunlight. Rated from 0 to 100:<\/p>\n<ul>\n<li class=\"my-0\">CRI 80+: Good for most indoor spaces.<\/li>\n<li class=\"my-0\">CRI 90+: Excellent for art, retail, and areas needing accurate color judgment.<\/li>\n<\/ul>\n<p class=\"my-0\"><em>Higher CRI lights make colors appear more vibrant and natural.<\/em><\/p>\n<h2 id=\"4-beam-angle-and-choosing-the-right-application\" class=\"mb-2 mt-6 text-base font-&#091;500&#093; first:mt-0 md:text-lg dark:font-&#091;475&#093; &#091;hr+&amp;&#093;:mt-4\"><span class=\"ez-toc-section\" id=\"4_Beam_Angle_and_Choosing_the_Right_Application\"><\/span>4. Beam Angle and Choosing the Right Application<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"my-0\"><strong>cURL Too many subrequests.<\/strong>\u00a0describes how light spreads from a source:<\/p>\n<ul>\n<li class=\"my-0\"><em>Narrow beam (10\u00b0-30\u00b0):<\/em>\u00a0Focused, for spotlights, accent lighting.<\/li>\n<li class=\"my-0\"><em>Medium beam (30\u00b0-60\u00b0):<\/em>\u00a0General area lighting, downlights.<\/li>\n<li class=\"my-0\"><em>Wide beam (60\u00b0+):<\/em>\u00a0Floodlighting, large spaces.<\/li>\n<\/ul>\n<p class=\"my-0\">Choosing the correct beam angle improves illumination efficiency and highlights target areas properly.<\/p>\n<h2 id=\"5-led-vs-traditional-bulbs\" class=\"mb-2 mt-6 text-base font-&#091;500&#093; first:mt-0 md:text-lg dark:font-&#091;475&#093; &#091;hr+&amp;&#093;:mt-4\"><span class=\"ez-toc-section\" id=\"5_LED_vs_Traditional_Bulbs\"><\/span>5. LED vs. Traditional Bulbs<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li class=\"my-0\"><strong>cURL Too many subrequests.<\/strong>\u00a0LEDs use up to 80% less energy.<\/li>\n<li class=\"my-0\"><strong>cURL Too many subrequests.<\/strong>\u00a0LEDs (25,000-50,000 hours) last much longer than incandescent or fluorescent bulbs.<\/li>\n<li class=\"my-0\"><strong>Instant light:<\/strong>\u00a0LEDs reach full brightness instantly.<\/li>\n<li class=\"my-0\"><strong>Environmental impact:<\/strong>\u00a0LEDs have no mercury and emit less CO\u2082.<\/li>\n<\/ul>\n<p class=\"my-0\">Switching to LEDs lowers costs and environmental footprint.<\/p>\n<h2 id=\"6-what-is-ugr-unified-glare-rating\" class=\"mb-2 mt-6 text-base font-&#091;500&#093; first:mt-0 md:text-lg dark:font-&#091;475&#093; &#091;hr+&amp;&#093;:mt-4\"><span class=\"ez-toc-section\" id=\"6_What_is_UGR_Unified_Glare_Rating\"><\/span>6. What is UGR (Unified Glare Rating)?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"my-0\"><strong>UGR<\/strong>\u00a0(Unified Glare Rating) measures the discomfort from glare caused by lighting installations.<\/p>\n<ul>\n<li class=\"my-0\">Ranges from 10 (imperceptible) to 30 (uncomfortable).<\/li>\n<li class=\"my-0\">Office lighting should have UGR &lt;19.<\/li>\n<\/ul>\n<p class=\"my-0\">cURL Too many subrequests.<\/p>\n<h2 id=\"7-the-significance-of-ip-ratings-in-waterproof-and\" class=\"mb-2 mt-6 text-base font-&#091;500&#093; first:mt-0 md:text-lg dark:font-&#091;475&#093; &#091;hr+&amp;&#093;:mt-4\"><span class=\"ez-toc-section\" id=\"7_The_Significance_of_IP_Ratings_in_Waterproof_and_Dustproof_Fixtures\"><\/span>7. The Significance of IP Ratings in Waterproof and Dustproof Fixtures<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"my-0\"><strong>IP-ateston<\/strong>\u00a0cURL Too many subrequests.<\/p>\n<ul>\n<li class=\"my-0\">cURL Too many subrequests.<\/li>\n<li class=\"my-0\">cURL Too many subrequests.<\/li>\n<\/ul>\n<p class=\"my-0\">cURL Too many subrequests.<\/p>\n<h2 id=\"8-understanding-the-relationship-between-watt-and\" class=\"mb-2 mt-6 text-base font-&#091;500&#093; first:mt-0 md:text-lg dark:font-&#091;475&#093; &#091;hr+&amp;&#093;:mt-4\"><span class=\"ez-toc-section\" id=\"8_Understanding_the_Relationship_Between_Watt_and_Brightness\"><\/span>8. Understanding the Relationship Between Watt and Brightness<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"my-0\"><strong>Watt<\/strong>\u00a0cURL Too many subrequests.<\/p>\n<ul>\n<li class=\"my-0\">cURL Too many subrequests.<\/li>\n<li class=\"my-0\">cURL Too many subrequests.<\/li>\n<\/ul>\n<p class=\"my-0\">cURL Too many subrequests.<\/p>\n<h2 id=\"9-what-is-power-factor\" class=\"mb-2 mt-6 text-base font-&#091;500&#093; first:mt-0 md:text-lg dark:font-&#091;475&#093; &#091;hr+&amp;&#093;:mt-4\"><span class=\"ez-toc-section\" id=\"9_What_is_Power_Factor\"><\/span>9. What is Power Factor?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"my-0\"><strong>cURL Too many subrequests.<\/strong>\u00a0cURL Too many subrequests.<\/p>\n<ul>\n<li class=\"my-0\">cURL Too many subrequests.<\/li>\n<li class=\"my-0\">cURL Too many subrequests.<\/li>\n<\/ul>\n<h2 id=\"10-differences-between-ac-and-dc-lighting-fixtures\" class=\"mb-2 mt-6 text-base font-&#091;500&#093; first:mt-0 md:text-lg dark:font-&#091;475&#093; &#091;hr+&amp;&#093;:mt-4\"><span class=\"ez-toc-section\" id=\"10_Differences_Between_AC_and_DC_Lighting_Fixtures\"><\/span>10. Differences Between AC and DC Lighting Fixtures<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li class=\"my-0\"><strong>cURL Too many subrequests.<\/strong>\u00a0cURL Too many subrequests.<\/li>\n<li class=\"my-0\"><strong>cURL Too many subrequests.<\/strong>\u00a0cURL Too many subrequests.<\/li>\n<\/ul>\n<p class=\"my-0\">cURL Too many subrequests.<\/p>\n<p class=\"my-0\">cURL Too many subrequests.<\/p>\n<\/div><\/div><\/div><\/div><\/div>","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":5290,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[],"class_list":["post-5289","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-business"],"_links":{"self":[{"href":"https:\/\/prillumen.com\/eo\/wp-json\/wp\/v2\/posts\/5289","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prillumen.com\/eo\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prillumen.com\/eo\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prillumen.com\/eo\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/prillumen.com\/eo\/wp-json\/wp\/v2\/comments?post=5289"}],"version-history":[{"count":2,"href":"https:\/\/prillumen.com\/eo\/wp-json\/wp\/v2\/posts\/5289\/revisions"}],"predecessor-version":[{"id":5292,"href":"https:\/\/prillumen.com\/eo\/wp-json\/wp\/v2\/posts\/5289\/revisions\/5292"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/prillumen.com\/eo\/wp-json\/wp\/v2\/media\/5290"}],"wp:attachment":[{"href":"https:\/\/prillumen.com\/eo\/wp-json\/wp\/v2\/media?parent=5289"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prillumen.com\/eo\/wp-json\/wp\/v2\/categories?post=5289"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prillumen.com\/eo\/wp-json\/wp\/v2\/tags?post=5289"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}