{"id":13927,"date":"2023-09-03T17:50:42","date_gmt":"2023-09-03T17:50:42","guid":{"rendered":"https:\/\/www.rayzeek.com\/?p=13927"},"modified":"2023-12-26T08:41:54","modified_gmt":"2023-12-26T08:41:54","slug":"what-is-light-scattering","status":"publish","type":"post","link":"https:\/\/www.rayzeek.com\/ro\/glosar\/ce-este-imprastierea-luminii","title":{"rendered":"Ce este \u00eempr\u0103\u0219tierea luminii"},"content":{"rendered":"

Ce este \u00eempr\u0103\u0219tierea luminii<\/h2>

Dispersia luminii este un fenomen \u00een care lumina interac\u021bioneaz\u0103 cu particule sau structuri prezente \u00eentr-un mediu, determin\u00e2nd schimbarea direc\u021biei sau propagarea ei \u00een moduri diferite. Aceasta apare atunci c\u00e2nd lumina trece dintr-un mediu \u00een altul, cum ar fi din aer \u00een ap\u0103 sau din aer pe o suprafa\u021b\u0103 de sticl\u0103. Aceast\u0103 \u00eempr\u0103\u0219tiere a luminii poate fi observat\u0103 \u00een diverse situa\u021bii, cum ar fi curbarea luminii multicolore dup\u0103-amiaza, datorit\u0103 refrac\u021biei \u0219i reflexiei interne totale.<\/p>

Intensitatea luminii \u00eempr\u0103\u0219tiate depinde de doi factori principali: dimensiunea particulelor \u0219i lungimea de und\u0103 a luminii. Lungimile de und\u0103 mai scurte \u0219i frecven\u021bele mai mari tind s\u0103 se \u00eempr\u0103\u0219tie mai mult datorit\u0103 ondula\u021biei traiectoriei luminii \u0219i a \u0219ansei crescute de a se intersecta cu o particul\u0103. \u00cen schimb, lungimile de und\u0103 mai lungi cu frecven\u021be mai mici sunt mai drepte \u0219i au o \u0219ans\u0103 mai mic\u0103 de a se ciocni cu particulele, rezult\u00e2nd o \u00eempr\u0103\u0219tiere mai mic\u0103.<\/p>

C\u0103uta\u021bi solu\u021bii de economisire a energiei activate prin mi\u0219care?<\/h3>

Contacta\u021bi-ne pentru senzori de mi\u0219care PIR complec\u0219i, produse de economisire a energiei activate de mi\u0219care, \u00eentrerup\u0103toare cu senzor de mi\u0219care \u0219i solu\u021bii comerciale de ocupare\/vacan\u021b\u0103.<\/p>

Trimite\u021bi un e-mail<\/p><\/a><\/div><\/div>

Formular de contact<\/p><\/a><\/div><\/div>

Chat Online<\/p><\/a><\/div><\/div><\/div><\/div>

Conceptul de \u00eempr\u0103\u0219tiere a luminii este str\u00e2ns legat de teoria \u00eempr\u0103\u0219tierii Rayleigh, care explic\u0103 culorile cerului \u0219i ale soarelui. Conform acestei teorii, lungimile de und\u0103 mai scurte ale luminii solare, cum ar fi cele albastre \u0219i violete, sunt \u00eempr\u0103\u0219tiate mai mult de particulele din atmosfera P\u0103m\u00e2ntului, ceea ce duce la culoarea albastr\u0103 a cerului. Pe de alt\u0103 parte, lungimile de und\u0103 mai lungi, cum ar fi cele ro\u0219ii, sunt dispersate mai pu\u021bin, ceea ce duce la culoarea ro\u0219ie a soarelui la r\u0103s\u0103rit \u0219i la apus.<\/p>

Inspir\u0103-te din portofoliile senzorilor de mi\u0219care Rayzeek.<\/h3>

Nu g\u0103se\u0219ti ceea ce vrei? Nu v\u0103 face\u021bi griji. Exist\u0103 \u00eentotdeauna modalit\u0103\u021bi alternative de a v\u0103 rezolva problemele. Poate c\u0103 unul dintre portofoliile noastre v\u0103 poate ajuta.<\/p>

Senzori de mi\u0219care PIR<\/p><\/a><\/div><\/div>

\u00centrerup\u0103toare cu senzor de mi\u0219care<\/p><\/a><\/div><\/div>

Senzori de prezen\u021b\u0103<\/p><\/a><\/div><\/div>

Senzor de mi\u0219care pentru aparatul de aer condi\u021bionat<\/p><\/a><\/div><\/div>

Benzi luminoase cu senzor de mi\u0219care<\/p><\/a><\/div><\/div>

Senzori de mi\u0219care DC de joas\u0103 tensiune\/Dimmers<\/p><\/a><\/div><\/div>

Kituri de senzori de mi\u0219care f\u0103r\u0103 fir<\/p><\/a><\/div><\/div><\/div><\/div>

\u00cen termeni de reprezentare matematic\u0103, probabilitatea de \u00eempr\u0103\u0219tiere (p) poate fi exprimat\u0103 ca o rela\u021bie invers\u0103 cu puterea a patra a lungimii de und\u0103 a radia\u021biei (\u03bb). Aceasta \u00eenseamn\u0103 c\u0103 probabilitatea de \u00eempr\u0103\u0219tiere cre\u0219te semnificativ pentru lungimi de und\u0103 mai scurte, \u00een timp ce scade pentru lungimi de und\u0103 mai mari.<\/p>

\u00centreb\u0103ri frecvente<\/h2>\n\n

De ce nu pot oamenii s\u0103 vad\u0103 \u00een \u00eentuneric<\/h3><\/div><\/div>\n\n

Capacitatea dumneavoastr\u0103 de a vedea \u00een \u00eentuneric este limitat\u0103 de faptul c\u0103 retina, care se afl\u0103 \u00een partea din spate a globului ocular, este compus\u0103 din peste 100 de milioane de celule sensibile la lumin\u0103. Prin urmare, atunci c\u00e2nd nu exist\u0103 lumin\u0103, aceste celule nu au ce s\u0103 detecteze, ceea ce duce la incapacitatea noastr\u0103 de a vedea \u00een \u00eentuneric.<\/p><\/div><\/div><\/div><\/div>\n\n

Care este un exemplu de \u00eempr\u0103\u0219tiere a luminii<\/h3><\/div><\/div>\n\n

Unele exemple de dispersie a luminii pe care le \u00eent\u00e2lnim \u00een via\u021ba noastr\u0103 de zi cu zi includ fenomenul cerului care apare albastru. Acest lucru se \u00eent\u00e2mpl\u0103 deoarece particulele din atmosfer\u0103 \u00eempr\u0103\u0219tie cel mai mult culoarea albastr\u0103 dintre cele \u0219apte componente prezente \u00een lumina solar\u0103.<\/p><\/div><\/div><\/div><\/div>\n\n

Ce face \u00eempr\u0103\u0219tierea la lumin\u0103<\/h3><\/div><\/div>\n\n

Dispersia luminii are loc atunci c\u00e2nd razele de lumin\u0103 \u00ee\u0219i schimb\u0103 direc\u021bia dup\u0103 ce \u00eent\u00e2lnesc obstacole, cum ar fi praful, moleculele de gaz sau vaporii de ap\u0103. Acest fenomen duce la diverse apari\u021bii remarcabile, inclusiv efectul Tyndall \u0219i apari\u021bia nuan\u021belor ro\u0219ii \u00een timpul r\u0103s\u0103ritului \u0219i apusului soarelui.<\/p><\/div><\/div><\/div><\/div>\n\n

Care sunt cele trei tipuri de \u00eempr\u0103\u0219tiere a luminii<\/h3><\/div><\/div>\n\n

De obicei, const\u0103 \u00een dou\u0103 categorii de \u00eempr\u0103\u0219tiere, \u0219i anume \u00eempr\u0103\u0219tierea elastic\u0103 a luminii \u0219i \u00eempr\u0103\u0219tierea inelastic\u0103 a luminii. \u00cempr\u0103\u0219tierea elastic\u0103 a luminii cuprinde \u00eempr\u0103\u0219tierea Rayleigh \u0219i \u00eempr\u0103\u0219tierea Mie, \u00een timp ce \u00eempr\u0103\u0219tierea neelastic\u0103 cuprinde \u00eempr\u0103\u0219tierea Raman, \u00eempr\u0103\u0219tierea neelastic\u0103 a razelor X, \u00eempr\u0103\u0219tierea Compton \u0219i \u00eempr\u0103\u0219tierea Brillouin.<\/p><\/div><\/div><\/div><\/div>\n\n

Ce obiect face ca lumina s\u0103 se \u00eempr\u0103\u0219tie<\/h3><\/div><\/div>\n\n

Dup\u0103 cum s-a demonstrat \u00een experimentul cu laser, pic\u0103turile de nor \u0219i cristalele de ghea\u021b\u0103 sunt eficiente \u00een a \u00eempr\u0103\u0219tia lumina. Cu toate acestea, este important de re\u021binut c\u0103 pic\u0103turile de nori \u0219i cristalele de ghea\u021b\u0103 sunt semnificativ mai mari dec\u00e2t moleculele de aer, ceea ce duce la \u00eempr\u0103\u0219tierea tuturor culorilor \u00een mod egal.<\/p><\/div><\/div><\/div><\/div>\n\n

Care lumin\u0103 se \u00eempr\u0103\u0219tie cel mai mult<\/h3><\/div><\/div>\n\n

Lumina ro\u0219ie este cea mai pu\u021bin dispersat\u0103, \u00een timp ce lumina albastr\u0103 este cea mai dispersat\u0103.<\/p><\/div><\/div><\/div><\/div>\n\n

Ce se \u00eent\u00e2mpl\u0103 dac\u0103 nu exist\u0103 \u00eempr\u0103\u0219tiere de lumin\u0103<\/h3><\/div><\/div>\n\n

Absen\u021ba dispersiei luminii are ca rezultat aspectul albastru al cerului. \u00cen mod similar, f\u0103r\u0103 dispersia luminii, luminile de pericol nu ar fi vizibile \u00een culoarea ro\u0219ie. \u00cen plus, absen\u021ba dispersiei luminii ar \u00eempiedica formarea curcubeelor.<\/p><\/div><\/div><\/div><\/div>\n\n

Ce previne \u00eempr\u0103\u0219tierea luminii<\/h3><\/div><\/div>\n\n

Irisul regleaz\u0103 cantitatea de lumin\u0103 care intr\u0103 \u00een ochi prin contrac\u021bia pupilei. Acest lucru ajut\u0103 la protejarea retinei de o stimulare excesiv\u0103 \u0219i previne \u00eempr\u0103\u0219tierea razelor de lumin\u0103, care poate cauza vedere \u00eence\u021bo\u0219at\u0103.<\/p><\/div><\/div><\/div><\/div>\n\n

Cum se detecteaz\u0103 dispersia luminii<\/h3><\/div><\/div>\n\n

Se folosesc dou\u0103 metode pentru a detecta dispersia luminii \u00eentr-o solu\u021bie. Prima tehnic\u0103, cunoscut\u0103 sub numele de nefelometrie, implic\u0103 monitorizarea intensit\u0103\u021bii luminii la un unghi \u00eendep\u0103rtat de lumina incident\u0103 care trece prin prob\u0103 pentru a m\u0103sura speciile care \u00eempr\u0103\u0219tie lumina \u00een solu\u021bie. A doua metod\u0103, numit\u0103 turbidimetrie, este utilizat\u0103 pentru a identifica speciile care \u00eempr\u0103\u0219tie lumina \u00een solu\u021bie...<\/p><\/div><\/div><\/div><\/div><\/div><\/div>","protected":false},"excerpt":{"rendered":"

Dispersia luminii este un fenomen \u00een care lumina interac\u021bioneaz\u0103 cu particule sau structuri prezente \u00eentr-un mediu, determin\u00e2nd schimbarea direc\u021biei sau propagarea ei \u00een moduri diferite.<\/p>","protected":false},"author":4,"featured_media":12865,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"article_term":"","article_term_alternate":"","article_term_def":"","article_hook":"","auto_links":"[{\"keyword\": \"refraction\", \"idxall\": 0, \"keywordtitlesimi\": 0.9300377368927002, \"keywordslugsimi\": 0.9300377368927002, \"paratitlesimi\": 0.6826303005218506, \"paraslugsimi\": 0.6826303005218506, \"slug\": \"what-is-refraction\", \"title\": \"What is Refraction\", \"id\": 13975}, {\"keyword\": \"wavelength of the light\", \"idxall\": 0, \"keywordtitlesimi\": 0.817554771900177, \"keywordslugsimi\": 0.817554771900177, \"paratitlesimi\": 0.6395822763442993, \"paraslugsimi\": 0.6395822763442993, \"slug\": \"what-is-wavelength\", \"title\": \"What is Wavelength\", \"id\": 13965}, {\"keyword\": \"wavelength of the light\", \"idxall\": 0, \"keywordtitlesimi\": 0.7871425151824951, \"keywordslugsimi\": 0.7871425151824951, \"paratitlesimi\": 0.6323208808898926, \"paraslugsimi\": 0.6323208808898926, \"slug\": \"what-is-quantity-of-light\", \"title\": \"What is Quantity of Light\", \"id\": 13530}, {\"keyword\": \"wavelength of the light\", \"idxall\": 0, \"keywordtitlesimi\": 0.7702292203903198, \"keywordslugsimi\": 0.7702292203903198, \"paratitlesimi\": 0.6228013038635254, \"paraslugsimi\": 0.6228013038635254, \"slug\": \"what-is-visible-light-spectrum\", \"title\": \"What is Visible Light Spectrum\", \"id\": 14093}, {\"keyword\": \"wavelength of the light\", \"idxall\": 0, \"keywordtitlesimi\": 0.7631725072860718, \"keywordslugsimi\": 0.7631725072860718, \"paratitlesimi\": 0.619139552116394, \"paraslugsimi\": 0.619139552116394, \"slug\": \"what-is-light-spectrum\", \"title\": \"What is Light Spectrum\", \"id\": 14060}, {\"keyword\": \"refraction\", \"idxall\": 0, \"keywordtitlesimi\": 0.7503388524055481, \"keywordslugsimi\": 0.7503388524055481, \"paratitlesimi\": 0.5212996006011963, \"paraslugsimi\": 0.5212996006011963, \"slug\": \"what-is-refractor\", \"title\": \"What is Refractor\", \"id\": 14150}]","article_topic":"","article_fact_check":"","mt_social_share":"","mt_content_meta":"","mt_glossary_display":"","glossary_heading":"","glossary":"Light Scattering","glossary_alter":"","glossary_def":"","article_task":"","footnotes":""},"categories":[102],"tags":[99],"class_list":["post-13927","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-glossary","tag-glossary"],"yoast_head":"\nWhat is Light Scattering - Rayzeek<\/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.rayzeek.com\/ro\/glosar\/ce-este-imprastierea-luminii\" \/>\n<meta property=\"og:locale\" content=\"ro_RO\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What is Light Scattering - Rayzeek\" \/>\n<meta property=\"og:description\" content=\"Light scattering is a phenomenon in which light interacts with particles or structures present in a medium, causing it to change direction or propagate in different ways.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.rayzeek.com\/ro\/glosar\/ce-este-imprastierea-luminii\" \/>\n<meta property=\"og:site_name\" content=\"Rayzeek\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/bester001\/\" \/>\n<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/bester001\/\" \/>\n<meta property=\"article:published_time\" content=\"2023-09-03T17:50:42+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-12-26T08:41:54+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.rayzeek.com\/wp-content\/uploads\/2023\/06\/rayzeek-glossary-image-7.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"800\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Horace He\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@RayzeekTech\" \/>\n<meta name=\"twitter:site\" content=\"@RayzeekTech\" \/>\n<meta name=\"twitter:label1\" content=\"Scris de\" \/>\n\t<meta name=\"twitter:data1\" content=\"Horace He\" \/>\n\t<meta name=\"twitter:label2\" content=\"Timp estimat pentru citire\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.rayzeek.com\/glossary\/what-is-light-scattering#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.rayzeek.com\/glossary\/what-is-light-scattering\"},\"author\":{\"name\":\"Horace He\",\"@id\":\"https:\/\/www.rayzeek.com\/#\/schema\/person\/ff0b4bd6573444e02efc8613274549c4\"},\"headline\":\"What is Light Scattering\",\"datePublished\":\"2023-09-03T17:50:42+00:00\",\"dateModified\":\"2023-12-26T08:41:54+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.rayzeek.com\/glossary\/what-is-light-scattering\"},\"wordCount\":697,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/www.rayzeek.com\/#organization\"},\"image\":{\"@id\":\"https:\/\/www.rayzeek.com\/glossary\/what-is-light-scattering#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.rayzeek.com\/wp-content\/uploads\/2023\/06\/rayzeek-glossary-image-7.jpg\",\"keywords\":[\"glossary\"],\"articleSection\":[\"glossary\"],\"inLanguage\":\"ro-RO\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/www.rayzeek.com\/glossary\/what-is-light-scattering#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.rayzeek.com\/glossary\/what-is-light-scattering\",\"url\":\"https:\/\/www.rayzeek.com\/glossary\/what-is-light-scattering\",\"name\":\"What is Light Scattering - 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