{"id":18021,"date":"2025-06-22T06:42:12","date_gmt":"2025-06-22T06:42:12","guid":{"rendered":"https:\/\/www.qualtechproductsindustry.com\/cie-15-2ciedefines-photometric-quantities-v%ce%bb-weighting-used-in-haze-transmission-tests-discuss-the-specific-use-and-purpose-you-can-write-extensively-about-what-a-particular-astm-test\/"},"modified":"2025-10-19T18:42:10","modified_gmt":"2025-10-19T18:42:10","slug":"cie-15-2","status":"publish","type":"post","link":"https:\/\/www.qualtechproductsindustry.com\/cy\/cie-15-2\/","title":{"rendered":"CIE 15.2 CIE yn Diffinio Meintiadau Ffotometrig: Canllaw Hanfodol ar gyfer Profi Niwl a Throsglwyddiad yn Gywir"},"content":{"rendered":"<p>Ydych chi erioed wedi meddwl sut rydyn ni'n mesur golau a'i ry interacci\u00f3n \u00e2 deunyddiau? Mae CIE 15.2, a ddatblygwyd gan y Comisiwn Rhyngwladol dros Oleuo (CIE), yn safon sylfaenol sy'n diffinio symiau ffotometrig gan ddefnyddio'r swyddogaeth pwyso V(\u03bb). Mae'r safon hon yn hanfodol ar gyfer mesur yn gywir sut mae deunyddiau'n trosglwyddo neu'n gwasgaru golau, gan ddarparu'r syl fundaci\u00f3n ar gyfer niwl a\u2026 <\/p>\n<div class=\"pmpro\">\n<div class=\"pmpro_card pmpro_content_message\">\n<h2 class=\"pmpro_card_title pmpro_font-large\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"24\" height=\"24\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"var(--pmpro--color--accent)\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" class=\"feather feather-lock\"><rect x=\"3\" y=\"11\" width=\"18\" height=\"11\" rx=\"2\" ry=\"2\"><\/rect><path d=\"M7 11V7a5 5 0 0 1 10 0v4\"><\/path><\/svg>Mae Angen Aelodaeth o'r Casgliad Mewnwelediadau a Chomentar<\/h2>\n<div class=\"pmpro_card_content\">\n<p> Rhaid i chi fod yn aelod o Gasgliad Mewnwelediadau a Chomentrau i gael mynediad at y cynnwys hwn.<\/p>\n<p><a class=\"pmpro_btn\" href=\"https:\/\/www.qualtechproductsindustry.com\/cy\/membership-checkout\/?pmpro_level=1\">Ymuno nawr<\/a><\/p>\n<\/div>\n<div class=\"pmpro_card_actions pmpro_font-medium\">Yn aelod yn barod? <a href=\"https:\/\/www.qualtechproductsindustry.com\/cy\/login\/?redirect_to=https%3A%2F%2Fwww.qualtechproductsindustry.com%2Fcy%2Fcie-15-2%2F\">Mewngofnodwch yma<\/a><\/div>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Have you ever wondered how we measure light and its interaction with materials? CIE 15.2, developed by the International Commission on Illumination (CIE), is a fundamental standard that defines photometric quantities using the V(\u03bb) weighting function. This standard is essential for accurately measuring how materials transmit or scatter light, providing the foundation for haze and... <\/p>\n<div class=\"pmpro\"><div class=\"pmpro_card pmpro_content_message\"><h2 class=\"pmpro_card_title pmpro_font-large\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"24\" height=\"24\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"var(--pmpro--color--accent)\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" class=\"feather feather-lock\"><rect x=\"3\" y=\"11\" width=\"18\" height=\"11\" rx=\"2\" ry=\"2\"><\/rect><path d=\"M7 11V7a5 5 0 0 1 10 0v4\"><\/path><\/svg>Mae Angen Aelodaeth o'r Casgliad Mewnwelediadau a Chomentar<\/h2><div class=\"pmpro_card_content\"><p> Rhaid i chi fod yn aelod o Gasgliad Mewnwelediadau a Chomentrau i gael mynediad at y cynnwys hwn.<\/p><p><a class=\"pmpro_btn\" href=\"https:\/\/www.qualtechproductsindustry.com\/cy\/membership-checkout\/?pmpro_level=1\">Ymuno nawr<\/a><\/p><\/div><div class=\"pmpro_card_actions pmpro_font-medium\">Yn aelod yn barod? <a href=\"https:\/\/www.qualtechproductsindustry.com\/cy\/login\/?redirect_to=https%3A%2F%2Fwww.qualtechproductsindustry.com%2Fcy%2Fcie-15-2%2F\">Mewngofnodwch yma<\/a><\/div><\/div><\/div>","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"pmpro_default_level":"","footnotes":""},"categories":[540,534],"tags":[],"class_list":["post-18021","post","type-post","status-publish","format-standard","hentry","category-cie","category-science","pmpro-level-required","pmpro-level-1","pmpro-no-access"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>CIE 15.2 CIE Defines Photometric Quantities: Essential Guidance for Accurate Haze and Transmission Testing - QUALTECH PRODUCTS INDUSTRY<\/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:\/\/www.qualtechproductsindustry.com\/cy\/cie-15-2\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"CIE 15.2 CIE Defines Photometric Quantities: Essential Guidance for Accurate Haze and Transmission Testing - QUALTECH PRODUCTS INDUSTRY\" \/>\n<meta property=\"og:description\" content=\"Have you ever wondered how we measure light and its interaction with materials? CIE 15.2, developed by the International Commission on Illumination (CIE), is a fundamental standard that defines photometric quantities using the V(\u03bb) weighting function. This standard is essential for accurately measuring how materials transmit or scatter light, providing the foundation for haze and\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.qualtechproductsindustry.com\/cy\/cie-15-2\/\" \/>\n<meta property=\"og:site_name\" content=\"QUALTECH PRODUCTS INDUSTRY\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-22T06:42:12+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-10-19T18:42:10+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/koala.sh\/api\/image\/v2-wps31-vvi1l.jpg?width=1216&#x26;height=832&#x26;dream\" \/>\n<meta name=\"author\" content=\"QUALTECH PRODUCTS INDUSTRY Science &amp; Research\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"QUALTECH PRODUCTS INDUSTRY Science &amp; Research\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"15 munud\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.qualtechproductsindustry.com\\\/cie-15-2\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.qualtechproductsindustry.com\\\/cie-15-2\\\/\"},\"author\":{\"name\":\"QUALTECH PRODUCTS INDUSTRY Science &amp; 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