{"id":1320,"date":"2012-10-18T18:36:21","date_gmt":"2012-10-18T17:36:21","guid":{"rendered":"http:\/\/bmscience.altervista.org\/blog\/?p=1320"},"modified":"2024-02-21T13:49:16","modified_gmt":"2024-02-21T12:49:16","slug":"luci-chimiche-come-sono-fatte","status":"publish","type":"post","link":"https:\/\/bmscience.net\/blog\/luci-chimiche-come-sono-fatte\/","title":{"rendered":"Luci Chimiche, come sono fatte?"},"content":{"rendered":"<div class=\"wp-block-image\">\n<figure class=\"alignright size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"220\" height=\"331\" src=\"https:\/\/bmscience.net\/blog\/wp-content\/uploads\/2012\/10\/Glowstick.svg_2.png\" alt=\"\" class=\"wp-image-1322\" style=\"width:187px;height:auto\" srcset=\"https:\/\/bmscience.net\/blog\/wp-content\/uploads\/2012\/10\/Glowstick.svg_2.png 220w, https:\/\/bmscience.net\/blog\/wp-content\/uploads\/2012\/10\/Glowstick.svg_2-199x300.png 199w\" sizes=\"auto, (max-width: 220px) 100vw, 220px\" \/><\/figure>\n<\/div>\n\n\n<p>Oggi le luci chimiche<strong> fluorescenti<\/strong>&nbsp;si possono trovare ovunque, ma non tutti sanno come sono fatte e&nbsp;quale processo chimico genera la luce in questi bastoncini luminosi.<\/p>\n\n\n\n<p>Questi oggetti sfruttano una reazione chimica che genera luce, chiamata<strong> chemioluminescenza<\/strong>.<\/p>\n\n\n\n<p>Le <em><strong>lightstick<\/strong><\/em>, note anche come <em><strong>starlight<\/strong><\/em>,\u00a0<em><strong>cyalume<\/strong><\/em>,\u00a0<em><strong>glowstick,<\/strong><\/em>\u00a0sono formate da un cilindro di materiale plastico flessibile, dove \u00e8 contenuta dell&#8217;<strong>acqua ossigenata<\/strong> mescolata a <strong>pigmenti<\/strong> fluorescenti, e una fialetta interna che contiene del\u00a0<strong>difenil ossalato\u00a0<\/strong>(un estere dell&#8217;acido ossalico).<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"215\" src=\"https:\/\/bmscience.net\/blog\/wp-content\/uploads\/2012\/10\/glow-stick-chemistry1.png\" alt=\"\" class=\"wp-image-1327\" style=\"width:610px;height:auto\" srcset=\"https:\/\/bmscience.net\/blog\/wp-content\/uploads\/2012\/10\/glow-stick-chemistry1.png 500w, https:\/\/bmscience.net\/blog\/wp-content\/uploads\/2012\/10\/glow-stick-chemistry1-300x129.png 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/figure>\n<\/div>\n\n<div id=\"bmscience915223479\" style=\"margin-left: auto;margin-right: auto;text-align: center;\"><script async src=\"\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-3495866718878812\" crossorigin=\"anonymous\"><\/script><ins class=\"adsbygoogle\" style=\"display:block;\" data-ad-client=\"ca-pub-3495866718878812\" \ndata-ad-slot=\"4682122636\" \ndata-ad-format=\"auto\" data-full-width-responsive=\"true\"><\/ins>\n<script> \n(adsbygoogle = window.adsbygoogle || []).push({}); \n<\/script>\n<\/div>\n\n\n<p>Quando si piega il cilindro la fialetta interna si rompe, mescolando i composti. In questo modo gli elettroni degli atomi ricevono abbastanza energia da passare ad un livello di energia pi\u00f9 alto. Tornando allo stato fondamentale emettono onde luminose. La reazione dura all&#8217;incirca 24 ore e non si pu\u00f2 interrompere.<\/p>\n\n\n<div id=\"bmscience366657326\" style=\"float: right;\"><script async src=\"\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-3495866718878812\" crossorigin=\"anonymous\"><\/script><ins class=\"adsbygoogle\" style=\"display:block;\" data-ad-client=\"ca-pub-3495866718878812\" \ndata-ad-slot=\"3435444406\" \ndata-ad-format=\"auto\" data-full-width-responsive=\"true\"><\/ins>\n<script> \n(adsbygoogle = window.adsbygoogle || []).push({}); \n<\/script>\n<\/div>\n\n\n<p>Tuttavia la si pu\u00f2 rallentare abbassandone la temperatura. In questo modo la velocit\u00e0 di reazione diminuisce. Al contrario se la si riscalda la temperatura ne si aumenta la velocit\u00e0 di reazione, quindi si diminuisce la durata della lampada.<\/p>\n\n\n\n<p>L&#8217;utilizzo degli starlight ha vari impieghi:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>luce di segnalazione o di emergenza<\/strong> (anche in campo bellico);<\/li>\n\n\n\n<li><strong>scopi ricreativi<\/strong> (es. braccialetti luminescenti);<\/li>\n\n\n\n<li><strong>pesca<\/strong>.<\/li>\n<\/ul>\n\n\n\n<p>Il vantaggio maggiore \u00e8 che non richiede elettricit\u00e0.<\/p>\n\n\n\n<p><p>Purtroppo la reazione pu\u00f2 avvenire una sola volta, quindi una volta esauriti i reagenti i bastoncini sono da buttare.<\/p><\/p>\n\n\n<div id=\"bmscience1073348871\" style=\"margin-top: 15px;margin-bottom: 15px;margin-left: auto;margin-right: auto;text-align: center;\"><a href=\"https:\/\/amzn.to\/4ncSy3r\" target=\"_blank\" aria-label=\"7966d1a5-9e6e-414a-a698-c821124fd430._CR0,0,3000,600_SX1920_\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/bmscience.net\/blog\/wp-content\/uploads\/2025\/06\/7966d1a5-9e6e-414a-a698-c821124fd430._CR003000600_SX1920_.jpg\" alt=\"\"  srcset=\"https:\/\/bmscience.net\/blog\/wp-content\/uploads\/2025\/06\/7966d1a5-9e6e-414a-a698-c821124fd430._CR003000600_SX1920_.jpg 1920w, https:\/\/bmscience.net\/blog\/wp-content\/uploads\/2025\/06\/7966d1a5-9e6e-414a-a698-c821124fd430._CR003000600_SX1920_-300x60.jpg 300w, https:\/\/bmscience.net\/blog\/wp-content\/uploads\/2025\/06\/7966d1a5-9e6e-414a-a698-c821124fd430._CR003000600_SX1920_-1024x205.jpg 1024w, https:\/\/bmscience.net\/blog\/wp-content\/uploads\/2025\/06\/7966d1a5-9e6e-414a-a698-c821124fd430._CR003000600_SX1920_-768x154.jpg 768w, https:\/\/bmscience.net\/blog\/wp-content\/uploads\/2025\/06\/7966d1a5-9e6e-414a-a698-c821124fd430._CR003000600_SX1920_-1536x307.jpg 1536w\" sizes=\"auto, (max-width: 1920px) 100vw, 1920px\" width=\"1920\" height=\"384\"  style=\"display: inline-block;\" \/><\/a><\/div>","protected":false},"excerpt":{"rendered":"<p>Oggi le luci chimiche fluorescenti&nbsp;si possono trovare ovunque, ma non tutti sanno come sono fatte e&nbsp;quale processo chimico genera la luce in questi bastoncini luminosi. Questi oggetti sfruttano una reazione chimica che genera luce, chiamata chemioluminescenza. Le lightstick, note anche come starlight,\u00a0cyalume,\u00a0glowstick,\u00a0sono formate da un cilindro di materiale plastico flessibile, dove \u00e8 contenuta dell&#8217;acqua ossigenata&hellip;<\/p>\n<p class=\"more\"><a class=\"more-link\" href=\"https:\/\/bmscience.net\/blog\/luci-chimiche-come-sono-fatte\/\">Continue reading <span class=\"screen-reader-text\">Luci Chimiche, come sono fatte?<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":1321,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"advgb_blocks_editor_width":"","advgb_blocks_columns_visual_guide":"","footnotes":""},"categories":[49,60],"tags":[953,1590,3221,3267,3599,4446,4544,6235,7124],"class_list":["post-1320","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-chimica","category-fisica","tag-bastoncini","tag-chimica-2","tag-fluorescenti","tag-formati","tag-glowstick","tag-lightstick","tag-luminosi","tag-reazione","tag-starlight","entry"],"author_meta":{"display_name":"Stefano","author_link":"https:\/\/bmscience.net\/blog\/author\/stefano\/"},"featured_img":"https:\/\/bmscience.net\/blog\/wp-content\/uploads\/2012\/10\/light-stick-e14183786151931-300x137.jpg","coauthors":[],"tax_additional":{"categories":{"linked":["<a href=\"https:\/\/bmscience.net\/blog\/category\/scienze-naturali\/chimica\/\" class=\"advgb-post-tax-term\">Chimica<\/a>","<a href=\"https:\/\/bmscience.net\/blog\/category\/scienze-naturali\/fisica\/\" class=\"advgb-post-tax-term\">Fisica<\/a>"],"unlinked":["<span class=\"advgb-post-tax-term\">Chimica<\/span>","<span class=\"advgb-post-tax-term\">Fisica<\/span>"]},"tags":{"linked":["<a href=\"https:\/\/bmscience.net\/blog\/category\/scienze-naturali\/fisica\/\" class=\"advgb-post-tax-term\">bastoncini<\/a>","<a href=\"https:\/\/bmscience.net\/blog\/category\/scienze-naturali\/fisica\/\" class=\"advgb-post-tax-term\">chimica<\/a>","<a href=\"https:\/\/bmscience.net\/blog\/category\/scienze-naturali\/fisica\/\" class=\"advgb-post-tax-term\">fluorescenti<\/a>","<a href=\"https:\/\/bmscience.net\/blog\/category\/scienze-naturali\/fisica\/\" class=\"advgb-post-tax-term\">formati<\/a>","<a href=\"https:\/\/bmscience.net\/blog\/category\/scienze-naturali\/fisica\/\" class=\"advgb-post-tax-term\">glowstick<\/a>","<a href=\"https:\/\/bmscience.net\/blog\/category\/scienze-naturali\/fisica\/\" class=\"advgb-post-tax-term\">lightstick<\/a>","<a href=\"https:\/\/bmscience.net\/blog\/category\/scienze-naturali\/fisica\/\" class=\"advgb-post-tax-term\">luminosi<\/a>","<a href=\"https:\/\/bmscience.net\/blog\/category\/scienze-naturali\/fisica\/\" class=\"advgb-post-tax-term\">reazione<\/a>","<a href=\"https:\/\/bmscience.net\/blog\/category\/scienze-naturali\/fisica\/\" class=\"advgb-post-tax-term\">starlight<\/a>"],"unlinked":["<span class=\"advgb-post-tax-term\">bastoncini<\/span>","<span class=\"advgb-post-tax-term\">chimica<\/span>","<span class=\"advgb-post-tax-term\">fluorescenti<\/span>","<span class=\"advgb-post-tax-term\">formati<\/span>","<span class=\"advgb-post-tax-term\">glowstick<\/span>","<span class=\"advgb-post-tax-term\">lightstick<\/span>","<span class=\"advgb-post-tax-term\">luminosi<\/span>","<span class=\"advgb-post-tax-term\">reazione<\/span>","<span class=\"advgb-post-tax-term\">starlight<\/span>"]}},"comment_count":"0","relative_dates":{"created":"Pubblicato 14 anni fa","modified":"Aggiornato 2 anni fa"},"absolute_dates":{"created":"Pubblicato il 18\/10\/2012","modified":"Aggiornato il 21\/02\/2024"},"absolute_dates_time":{"created":"Pubblicato il 18\/10\/2012 18:36","modified":"Aggiornato il 21\/02\/2024 13:49"},"featured_img_caption":"","series_order":"","_links":{"self":[{"href":"https:\/\/bmscience.net\/blog\/wp-json\/wp\/v2\/posts\/1320","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/bmscience.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/bmscience.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/bmscience.net\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/bmscience.net\/blog\/wp-json\/wp\/v2\/comments?post=1320"}],"version-history":[{"count":0,"href":"https:\/\/bmscience.net\/blog\/wp-json\/wp\/v2\/posts\/1320\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/bmscience.net\/blog\/wp-json\/wp\/v2\/media\/1321"}],"wp:attachment":[{"href":"https:\/\/bmscience.net\/blog\/wp-json\/wp\/v2\/media?parent=1320"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bmscience.net\/blog\/wp-json\/wp\/v2\/categories?post=1320"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bmscience.net\/blog\/wp-json\/wp\/v2\/tags?post=1320"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}