{"id":68947,"date":"2020-09-23T09:17:24","date_gmt":"2020-09-23T06:17:24","guid":{"rendered":"http:\/\/realitatearutiera.ro\/?p=68947"},"modified":"2020-09-23T09:17:27","modified_gmt":"2020-09-23T06:17:27","slug":"de-ce-este-albastru-una-dintre-culorile-cele-mai-vii-intalnite-in-natura","status":"publish","type":"post","link":"https:\/\/realitatearutiera.ro\/?p=68947","title":{"rendered":"De ce este albastru una dintre culorile cele mai \u201evii\u201d \u00eent\u00e2lnite \u00een natur\u0103"},"content":{"rendered":"\n

De la penele p\u0103s\u0103rilor la coaja unor fructe, lumea natural\u0103 \u00ee\u0219i arat\u0103 culorile spectaculoase \u00een diverse feluri, prin pigmen\u021bi care permit absorb\u021bia selectiv\u0103 a culorii sau prin culoarea structural, adic\u0103 folosirea structurilor microscopice pentru a controla reflec\u021bia luminii.<\/strong><\/p>\n\n\n\n

Acum, oamenii de \u0219tiin\u021b\u0103 au dezvoltat un model computerizat care explic\u0103 de ce structurile mate cele mai \u201evii\u201d din natur\u0103 sunt aproape mereu albastre \u0219i verzi. Motivul este c\u0103 acelea sunt limitele culorii structural din spectrul vizibil de lumin\u0103.<\/p>\n\n\n\n

Noile cercet\u0103ri pot ajuta la dezvoltarea de vopsele prietenoase cu mediul \u00eenconjur\u0103tor<\/h3>\n\n\n\n

\u00cen afar\u0103 de faptul c\u0103 ne ofer\u0103 o \u00een\u021belegere mai bun\u0103 asupra modului \u00een care nuan\u021bele cele mai aprinse<\/a> de albastru \u0219i verde sunt create \u00een lumea natural\u0103, noile cercet\u0103ri pot fi importante \u0219i pentru dezvoltarea de vopsele prietenoase cu mediul, care nu se vor estompa \u00een timp \u0219i nu vor elibera chimicale toxice.<\/p>\n\n\n\n

\u201ePe l\u00e2ng\u0103 intensitate \u0219i rezisten\u021b\u0103, o vopsea mat\u0103 care folose\u0219te culoare structural\u0103 ar putea fi mult mai prietenoas\u0103 cu mediul \u00eenconjur\u0103tor, pentru c\u0103 pigmen\u021bii \u0219i coloran\u021bii toxici nu ar mai fi necesari\u201d, a explicat Gianni Jacucci, fizician la Universitatea Cambridge din Marea Britanie.<\/p>\n\n\n\n

\u201ePe l\u00e2ng\u0103 ro\u0219u, nuan\u021bele de galben \u0219i portocaliu pot fi create cu greu\u201d<\/h3>\n\n\n\n

Noul model computerizat, bazat pe materiale artificiale numite \u201ephotonic glasses\u201d, arat\u0103 c\u0103 ro\u0219u este \u00een afara\u00a0tehnicilor din spatele culorilor<\/a>\u00a0structurale mate. Cu alte cuvinte, regiunea de lungime de und\u0103 din spectrul vizibil nu poate fi cu u\u0219urin\u021b\u0103 reflectat\u0103 folosind tehnicile acestor structuri microscopice de suprafa\u021b\u0103.<\/p>\n\n\n\n

\u201e\u00cen urma interac\u021biunii complexe dintre \u00eempr\u0103\u0219tierea individual\u0103 \u0219i cea multipl\u0103 am descoperit c\u0103 pe l\u00e2ng\u0103 ro\u0219u, galben \u0219i portocaliu pot fi create cu greu\u201d, a dezv\u0103luit Silvia Vignolini, chimist la Universitatea Cambridge.<\/p>\n\n\n\n

Evolu\u021bia naturii a dus la moduri diferite de a produce nuan\u021be de ro\u0219u
Acest lucru ar putea explica de ce nuan\u021bele mate de ro\u0219u sunt produse cu ajutorul pigmen\u021bilor \u00een natur\u0103, \u0219i nu cu ajutorul culorilor structurale. Echipa de cercet\u0103tori crede c\u0103 evolu\u021bia \u00een natur\u0103 a dus la moduri diferite de a produce nuan\u021be de ro\u0219u, din cauza limit\u0103rilor structurale, informeaz\u0103 Science Alert.<\/p>\n\n\n\n

\u201eAtunci c\u00e2nd am \u00eencercat s\u0103 producem artificial culori structurale pentru ro\u0219u \u0219i portocaliu, rezultatul a fost de calitate slab\u0103, at\u00e2t \u00een termeni de satura\u021bie c\u00e2t \u0219i \u00een puritatea culorii\u201d, a explicat Lukas Schertel, chimist la Universitatea Cambridge.<\/p>\n\n\n\n

Vezi galeria foto pe descopera.ro<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

De la penele p\u0103s\u0103rilor la coaja unor fructe, lumea natural\u0103 \u00ee\u0219i arat\u0103 culorile spectaculoase \u00een diverse feluri, prin pigmen\u021bi care<\/p>\n","protected":false},"author":1,"featured_media":68949,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"spay_email":"","footnotes":"","jetpack_publicize_message":""},"categories":[52,12],"tags":[],"class_list":["post-68947","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-amuzament","category-stiri-internationale"],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/realitatearutiera.ro\/wp-content\/uploads\/2020\/09\/albastru-natura-culoare-unsplash_descopera-3.jpg?fit=900%2C600&ssl=1","jetpack_publicize_connections":[],"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p61naM-hW3","jetpack-related-posts":[],"_links":{"self":[{"href":"https:\/\/realitatearutiera.ro\/index.php?rest_route=\/wp\/v2\/posts\/68947","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/realitatearutiera.ro\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/realitatearutiera.ro\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/realitatearutiera.ro\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/realitatearutiera.ro\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=68947"}],"version-history":[{"count":1,"href":"https:\/\/realitatearutiera.ro\/index.php?rest_route=\/wp\/v2\/posts\/68947\/revisions"}],"predecessor-version":[{"id":68950,"href":"https:\/\/realitatearutiera.ro\/index.php?rest_route=\/wp\/v2\/posts\/68947\/revisions\/68950"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/realitatearutiera.ro\/index.php?rest_route=\/wp\/v2\/media\/68949"}],"wp:attachment":[{"href":"https:\/\/realitatearutiera.ro\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=68947"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/realitatearutiera.ro\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=68947"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/realitatearutiera.ro\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=68947"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}