{"id":731,"date":"2013-12-20T01:11:53","date_gmt":"2013-12-20T00:11:53","guid":{"rendered":"http:\/\/www.proof.de\/?post_type=encyclopedia&#038;p=731"},"modified":"2023-08-19T00:47:17","modified_gmt":"2023-08-18T22:47:17","slug":"kelvin","status":"publish","type":"encyclopedia","link":"https:\/\/proof.proofen.de\/it\/lessico-4\/kelvin\/","title":{"rendered":"Kelvin"},"content":{"rendered":"<div class=\"kk-star-ratings kksr-auto kksr-align-right kksr-valign-top\" data-payload='{\"align\":\"right\",\"id\":\"731\",\"slug\":\"default\",\"valign\":\"top\",\"ignore\":\"\",\"reference\":\"auto\",\"class\":\"\",\"count\":\"0\",\"legendonly\":\"\",\"readonly\":\"\",\"score\":\"0\",\"starsonly\":\"\",\"best\":\"5\",\"gap\":\"5\",\"greet\":\"Jetzt bewerten\",\"legend\":\"0\\\/5 - (0 votes)\",\"size\":\"24\",\"title\":\"Kelvin\",\"width\":\"0\",\"_legend\":\"{score}\\\/{best} - ({count} {votes})\",\"font_factor\":\"1.25\"}'>\n            \n<div class=\"kksr-stars\">\n    \n<div class=\"kksr-stars-inactive\">\n            <div class=\"kksr-star\" data-star=\"1\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"2\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"3\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"4\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"5\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n    <\/div>\n    \n<div class=\"kksr-stars-active\" style=\"width: 0px;\">\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n    <\/div>\n<\/div>\n                \n\n<div class=\"kksr-legend\" style=\"font-size: 19.2px;\">\n            <span class=\"kksr-muted\">Valuta ora<\/span>\n    <\/div>\n    <\/div>\n<p>Il Kelvin \u00e8 un'unit\u00e0 di temperatura assoluta utilizzata in ambito scientifico.<\/p>\n<p class=\"translation-block\">La <a href=\"https:\/\/proof.proofen.de\/es\/lexico-2\/temperatura-de-color\/\" target=\"_self\" class=\"enciclopedia tooltipstered\">temperatura del colore<\/a> di una sorgente luminosa, di un monitor o di un'immagine in Kelvin d<a href=\"https:\/\/proof.proofen.de\/es\/lexico-2\/efi\/\" target=\"_self\" class=\"enciclopedia tooltipstered\">efi<\/a> corrisponde alla temperatura di un oggetto assolutamente nero se dovesse brillare in questo bianco. Ecco una spiegazione pi\u00f9 dettagliata:<\/p>\n<h3>Radiatore a corpo nero e legge di Planck sulla radiazione:<\/h3>\n<p>Un corpo nero \u00e8 un oggetto ipotetico che emette radiazioni elettromagnetiche in funzione della sua temperatura. Max Planck ha sviluppato la legge di Planck sulla radiazione per descrivere le propriet\u00e0 di radiazione di un radiatore di corpo nero. Questa legge afferma che la distribuzione spettrale della radiazione emessa dipende dalla temperatura del corpo nero. A temperature pi\u00f9 elevate, il corpo nero emette pi\u00f9 energia a lunghezze d'onda pi\u00f9 corte (frequenze pi\u00f9 alte), facendo apparire la luce bluastra. A temperature pi\u00f9 basse, l'emissione \u00e8 maggiore a lunghezze d'onda maggiori (frequenze pi\u00f9 basse), facendo apparire la luce rossastra.<\/p>\n<h3>Applicazione a sorgenti luminose reali:<\/h3>\n<p>In pratica, le sorgenti luminose reali come le lampadine a incandescenza, le lampade fluorescenti, la luce del giorno, ecc. non possono essere considerate corpi neri perfetti. Tuttavia, con l'aiuto della legge di Planck sulla radiazione, possiamo definire una temperatura che descrive la tonalit\u00e0 di luce che questa sorgente avrebbe con una radiazione nera ideale. Questa temperatura definita si misura in Kelvin e si chiama \"temperatura della luce\".<\/p>\n<h3>Le temperature di colore nella pratica:<\/h3>\n<p>L'uso dell'unit\u00e0 Kelvin per misurare la temperatura della luce consente una descrizione standardizzata e oggettiva delle sorgenti luminose. Le sorgenti luminose con valori Kelvin pi\u00f9 bassi (ad esempio, 2000 K - 3000 K) sono percepite come \"calde\" o rossastre, mentre le sorgenti luminose con valori Kelvin pi\u00f9 alti (ad esempio, 5000 K - 6500 K) appaiono come \"fredde\" o bluastre.<\/p>\n<h3>Applicazioni:<\/h3>\n<p>L'uso dei Kelvin per descrivere la temperatura della luce \u00e8 importante in molti campi. Nella fotografia e nella produzione video, la scelta della giusta temperatura della luce pu\u00f2 influenzare l'umore e l'atmosfera di un'immagine. Nella tecnologia dell'illuminazione, l'uso dei valori Kelvin aiuta a selezionare le sorgenti luminose che creano la qualit\u00e0 del colore e l'atmosfera desiderata. In <a href=\"https:\/\/proof.proofen.de\/it\/lessico-4\/gestione-del-colore-3\/\" target=\"_self\" title=\"L&#039;obiettivo della gestione del colore \u00e8 garantire che i colori siano riprodotti nel modo pi\u00f9 simile possibile tra i vari dispositivi, come fotocamere, scanner, monitor, stampanti laser, a getto d&#039;inchiostro, offset e molti altri.\" class=\"encyclopedia\">Gestione del colore<\/a> la considerazione della temperatura della luce consente una resa cromatica esatta su schermi e stampanti diversi. La luce diurna \u00e8 definita come 6.500 Kelvin, per la stampa in Europa con i <a href=\"https:\/\/proof.proofen.de\/it\/lessico-4\/d50\/\" target=\"_self\" title=\"D50 \u00e8 la luce standard del settore della stampa. Le bozze possono essere abbinate ai colori solo con luce standard D50,\" class=\"encyclopedia\">D50<\/a> <a href=\"https:\/\/proof.proofen.de\/it\/lessico-4\/luce-normale\/\" target=\"_self\" title=\"La luce standard si riferisce a condizioni di illuminazione definite in cui gli spettatori possono osservare e valutare in modo uniforme le stampe o gli oggetti. L&#039;illuminante standard pi\u00f9 importante \u00e8 il D50 per gli stampatori (temperatura di colore: 5.000 Kelvin).\" class=\"encyclopedia\">Luce standard<\/a> una temperatura di colore di 5.000 Kelvin. I monitor per l'elaborazione delle immagini sono solitamente calibrati su 5.800 Kelvin, poich\u00e9 questo valore un po' pi\u00f9 \"freddo\" si \u00e8 dimostrato pi\u00f9 pratico per la corrispondenza dei colori rispetto ai 5.000 Kelvin puri e relativamente giallastri.<\/p>\n<p>Nel complesso, l'uso del Kelvin per misurare la temperatura della luce fornisce un metodo pratico e standardizzato per descrivere e controllare il colore delle sorgenti luminose, che \u00e8 di grande importanza in molte aree della percezione visiva e della tecnologia.<\/p>\n<p>Per inciso, la parola \"grado\" non viene utilizzata in relazione al kelvin. Una temperatura di 5.000 Kelvin non viene definita \"5.000 gradi Kelvin\", ma solo 5.000 Kelvin o \"5.000 K\".<\/p>","protected":false},"excerpt":{"rendered":"<p>Il Kelvin \u00e8 un'unit\u00e0 di temperatura assoluta utilizzata in ambito scientifico. La luce del giorno \u00e8 definita come 6500 Kelvin, mentre per la stampa si applica una temperatura di colore di 5000 Kelvin in Europa con la luce standard D50.<\/p>","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","template":"","meta":{"inline_featured_image":false,"footnotes":""},"class_list":["post-731","encyclopedia","type-encyclopedia","status-publish","hentry","no-featured-image-padding"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.0.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"Kelvin ist eine absolute Temperatureinheit. 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