{"id":9832,"date":"2021-04-04T23:12:15","date_gmt":"2021-04-04T23:12:15","guid":{"rendered":"https:\/\/eschooltoday.com\/learn\/?page_id=9832"},"modified":"2021-04-05T01:36:03","modified_gmt":"2021-04-05T01:36:03","slug":"sources-of-light-pollution","status":"publish","type":"page","link":"https:\/\/eschooltoday.com\/learn\/sources-of-light-pollution\/","title":{"rendered":"Sources of light pollution"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"9832\" class=\"elementor elementor-9832\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-d069861 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"d069861\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-51d80ab\" data-id=\"51d80ab\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-183c713 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"183c713\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-inner-column elementor-element elementor-element-3486c6f\" data-id=\"3486c6f\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-d1733bf elementor-align-start elementor-icon-list--layout-traditional elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"d1733bf\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-list.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<ul class=\"elementor-icon-list-items\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Light Pollution<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b32e98a elementor-widget elementor-widget-jet-nav-menu\" data-id=\"b32e98a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"jet-nav-menu.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<nav class=\"jet-nav-wrap m-layout-mobile\"><div class=\"menu-light-pollution-container\"><div class=\"jet-nav m-layout-mobile jet-nav--vertical jet-nav--vertical-sub-left-side\"><div class=\"menu-item menu-item-type-post_type menu-item-object-page jet-nav__item-9847 jet-nav__item\"><a href=\"https:\/\/eschooltoday.com\/learn\/light-pollution\/\" class=\"menu-item-link menu-item-link-depth-0 menu-item-link-top\"><span class=\"jet-nav-link-text\">Light pollution<\/span><\/a><\/div>\n<div class=\"menu-item menu-item-type-post_type menu-item-object-page jet-nav__item-9857 jet-nav__item\"><a href=\"https:\/\/eschooltoday.com\/learn\/what-is-light-pollution\/\" class=\"menu-item-link menu-item-link-depth-0 menu-item-link-top\"><span class=\"jet-nav-link-text\">What is light pollution?<\/span><\/a><\/div>\n<div class=\"menu-item menu-item-type-post_type menu-item-object-page jet-nav__item-9851 jet-nav__item\"><a href=\"https:\/\/eschooltoday.com\/learn\/sources-of-light-pollution\/\" class=\"menu-item-link menu-item-link-depth-0 menu-item-link-top\"><span class=\"jet-nav-link-text\">Sources of light pollution<\/span><\/a><\/div>\n<div class=\"menu-item menu-item-type-post_type menu-item-object-page jet-nav__item-9848 jet-nav__item\"><a href=\"https:\/\/eschooltoday.com\/learn\/types-of-light-pollution\/\" class=\"menu-item-link menu-item-link-depth-0 menu-item-link-top\"><span class=\"jet-nav-link-text\">Types of light pollution<\/span><\/a><\/div>\n<div class=\"menu-item menu-item-type-post_type menu-item-object-page jet-nav__item-9850 jet-nav__item\"><a href=\"https:\/\/eschooltoday.com\/learn\/effects-of-light-pollution\/\" class=\"menu-item-link menu-item-link-depth-0 menu-item-link-top\"><span class=\"jet-nav-link-text\">Effects of light pollution<\/span><\/a><\/div>\n<div class=\"menu-item menu-item-type-post_type menu-item-object-page jet-nav__item-9849 jet-nav__item\"><a href=\"https:\/\/eschooltoday.com\/learn\/light-pollution-prevention\/\" class=\"menu-item-link menu-item-link-depth-0 menu-item-link-top\"><span class=\"jet-nav-link-text\">Light pollution prevention<\/span><\/a><\/div>\n<div class=\"menu-item menu-item-type-post_type menu-item-object-page jet-nav__item-9852 jet-nav__item\"><a href=\"https:\/\/eschooltoday.com\/learn\/light-pollution-and-hatchlings\/\" class=\"menu-item-link menu-item-link-depth-0 menu-item-link-top\"><span class=\"jet-nav-link-text\">Light pollution and hatchlings<\/span><\/a><\/div>\n<div class=\"menu-item menu-item-type-post_type menu-item-object-page jet-nav__item-9853 jet-nav__item\"><a href=\"https:\/\/eschooltoday.com\/learn\/light-pollution-factsheet\/\" class=\"menu-item-link menu-item-link-depth-0 menu-item-link-top\"><span class=\"jet-nav-link-text\">Light pollution factsheet<\/span><\/a><\/div>\n<\/div><\/div><\/nav>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c644594 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"c644594\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4349346 elementor-widget elementor-widget-html\" data-id=\"4349346\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script>\n<!-- Tall-Responsive -->\n<ins class=\"adsbygoogle\"\n     style=\"display:block\"\n     data-ad-client=\"ca-pub-4993435605385515\"\n     data-ad-slot=\"6804764118\"\n     data-ad-format=\"auto\"\n     data-full-width-responsive=\"true\"><\/ins>\n<script>\n     (adsbygoogle = window.adsbygoogle || []).push({});\n<\/script>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-inner-column elementor-element elementor-element-547f61a\" data-id=\"547f61a\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-b1d3634 elementor-widget elementor-widget-heading\" data-id=\"b1d3634\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><b>What are the main sources of light pollution?<\/b><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f9412a3 elementor-widget elementor-widget-text-editor\" data-id=\"f9412a3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"p1\">In a nutshell, all artificial lights that emit above the horizontal are likely to cause light pollution.<\/p><p class=\"p1\">This is because much of it ends up straight above. In recent times, efficient design in lighting equipment makes it possible to direct light into specific places, thereby minimizing light spillovers.<\/p><p class=\"p1\">The light that is directed downwards to minimize light pollution is called <b><i>shielded lights (or full cut-off).<\/i><\/b><\/p><p class=\"p1\"><img fetchpriority=\"high\" decoding=\"async\" class=\"alignnone size-full wp-image-10001\" src=\"https:\/\/eschooltoday.com\/learn\/wp-content\/uploads\/2021\/04\/shielded-lights.jpg\" alt=\"\" width=\"600\" height=\"284\" srcset=\"https:\/\/eschooltoday.com\/learn\/wp-content\/uploads\/2021\/04\/shielded-lights.jpg 600w, https:\/\/eschooltoday.com\/learn\/wp-content\/uploads\/2021\/04\/shielded-lights-300x142.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/>Below are a few sources that contribute to light pollution.<\/p><p class=\"p1\"><i><b>Electronic Advertising Boards and Commercial Centers:<\/b><\/i><\/p><p class=\"p1\">Many of the large electronic signboards in the cities and on highways are lit up by powerful lights that focus on the boards from below. Lights end up reflected upwards off the boards. Restaurants, discos, pubs, games, and shops in the cities also use a lot of light to attract customers. Many of the lights they use are not directed to any particular place, making its dispersion more than intended.<\/p><p class=\"p1\"><b><i>Night Sports grounds:<\/i><\/b><\/p><p class=\"p1\">Floodlights that light stadiums and other places of sports often contribute to light pollution as the powerful lights end up upwards. These include the large light posts on the car parks.<\/p><p class=\"p1\"><b><i>Streetlights and car lights:<\/i><\/b><\/p><p class=\"p1\">In some cities, hundreds of miles of powerful streetlights stay on all night. This, together with the vehicles that use the roads all contribute a lot to the light being directed above and to other unintended places. It has been estimated that about 35% to 50% of all light pollution is produced by roadway lighting (Ref 13). \u2014 LIGHT POLLUTION ENVIRONMENTAL EFFECTS OF ROADWAY LIGHTING, Carl Shaflik, BASc, PEng<\/p><p class=\"p1\"><i><b>City Parks, Airports, public places:<\/b><\/i><\/p><p class=\"p1\">Many of these areas use many old-fashioned lights that are not shielded and have a lot of them emitting light upwards.<\/p><p class=\"p1\"><b><i>Residential Areas:<\/i><\/b><\/p><p class=\"p1\">Light pollution in these areas tends to be of the glare and spillover type. Garden and landscape lights intended to add aesthetics to the landscape and architecture often end up as a nuisance at night, because they tend to irritate people as they walk or drive in these areas.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-inner-column elementor-element elementor-element-e6e8739\" data-id=\"e6e8739\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-4325f83 elementor-widget elementor-widget-html\" data-id=\"4325f83\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script>\n<!-- Tall-Responsive -->\n<ins class=\"adsbygoogle\"\n     style=\"display:block\"\n     data-ad-client=\"ca-pub-4993435605385515\"\n     data-ad-slot=\"6804764118\"\n     data-ad-format=\"auto\"\n     data-full-width-responsive=\"true\"><\/ins>\n<script>\n     (adsbygoogle = window.adsbygoogle || []).push({});\n<\/script>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-f45d5ea elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"f45d5ea\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-b25d540\" data-id=\"b25d540\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-0ec24c9 elementor-widget elementor-widget-button\" data-id=\"0ec24c9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-md\" href=\"https:\/\/eschooltoday.com\/learn\/what-is-light-pollution\/\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">GO BACK<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-e55bb6b\" data-id=\"e55bb6b\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-20f6d99 elementor-widget elementor-widget-button\" data-id=\"20f6d99\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-md\" href=\"https:\/\/eschooltoday.com\/learn\/types-of-light-pollution\/\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">NEXT PAGE<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-4e9af14 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"4e9af14\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-d5c5b6a\" data-id=\"d5c5b6a\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-cef878a elementor-widget elementor-widget-heading\" data-id=\"cef878a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Recommended Pollution Lessons<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6e359ce jet-nav-align-flex-start elementor-widget elementor-widget-jet-nav-menu\" data-id=\"6e359ce\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"jet-nav-menu.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<nav class=\"jet-nav-wrap m-layout-mobile\"><div class=\"menu-pollution-container\"><div class=\"jet-nav m-layout-mobile jet-nav--horizontal\"><div class=\"menu-item menu-item-type-post_type menu-item-object-page jet-nav__item-6307 jet-nav__item\"><a href=\"https:\/\/eschooltoday.com\/learn\/what-is-water-pollution\/\" class=\"menu-item-link menu-item-link-depth-0 menu-item-link-top\"><span class=\"jet-nav-link-text\">Water Pollution<\/span><\/a><\/div>\n<div class=\"menu-item menu-item-type-post_type menu-item-object-page jet-nav__item-6308 jet-nav__item\"><a href=\"https:\/\/eschooltoday.com\/learn\/what-is-air-pollution\/\" class=\"menu-item-link menu-item-link-depth-0 menu-item-link-top\"><span class=\"jet-nav-link-text\">Air Pollution<\/span><\/a><\/div>\n<div class=\"menu-item menu-item-type-post_type menu-item-object-page jet-nav__item-6309 jet-nav__item\"><a href=\"https:\/\/eschooltoday.com\/learn\/what-is-land-pollution\/\" class=\"menu-item-link menu-item-link-depth-0 menu-item-link-top\"><span class=\"jet-nav-link-text\">Land Pollution<\/span><\/a><\/div>\n<div class=\"menu-item menu-item-type-post_type menu-item-object-page jet-nav__item-6388 jet-nav__item\"><a href=\"https:\/\/eschooltoday.com\/learn\/what-is-noise-pollution\/\" class=\"menu-item-link menu-item-link-depth-0 menu-item-link-top\"><span class=\"jet-nav-link-text\">Noise Pollution<\/span><\/a><\/div>\n<div class=\"menu-item menu-item-type-post_type menu-item-object-page jet-nav__item-9858 jet-nav__item\"><a href=\"https:\/\/eschooltoday.com\/learn\/what-is-light-pollution\/\" class=\"menu-item-link menu-item-link-depth-0 menu-item-link-top\"><span class=\"jet-nav-link-text\">What is light pollution?<\/span><\/a><\/div>\n<div class=\"menu-item menu-item-type-post_type menu-item-object-page jet-nav__item-11155 jet-nav__item\"><a href=\"https:\/\/eschooltoday.com\/learn\/plastic-waste\/\" class=\"menu-item-link menu-item-link-depth-0 menu-item-link-top\"><span class=\"jet-nav-link-text\">Plastic Pollution<\/span><\/a><\/div>\n<\/div><\/div><\/nav>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Light Pollution Light pollution What is light pollution? Sources of light pollution Types of light pollution Effects of light pollution Light pollution prevention Light pollution and hatchlings Light pollution factsheet What are the main sources of light pollution? In a nutshell, all artificial lights that emit above the horizontal are likely to cause light pollution. [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"page-templates\/fullwidth-content.php","meta":{"footnotes":""},"class_list":["post-9832","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/eschooltoday.com\/learn\/wp-json\/wp\/v2\/pages\/9832","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/eschooltoday.com\/learn\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/eschooltoday.com\/learn\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/eschooltoday.com\/learn\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/eschooltoday.com\/learn\/wp-json\/wp\/v2\/comments?post=9832"}],"version-history":[{"count":16,"href":"https:\/\/eschooltoday.com\/learn\/wp-json\/wp\/v2\/pages\/9832\/revisions"}],"predecessor-version":[{"id":10004,"href":"https:\/\/eschooltoday.com\/learn\/wp-json\/wp\/v2\/pages\/9832\/revisions\/10004"}],"wp:attachment":[{"href":"https:\/\/eschooltoday.com\/learn\/wp-json\/wp\/v2\/media?parent=9832"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}