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{"id":2051724,"date":"2014-12-17T12:01:25","date_gmt":"2014-12-17T12:01:25","guid":{"rendered":"https:\/\/romfilatelia.ro\/romagazin\/produs\/mari-inventatori\/"},"modified":"2021-02-10T15:25:26","modified_gmt":"2021-02-10T15:25:26","slug":"mari-inventatori","status":"publish","type":"product","link":"https:\/\/romfilatelia.ro\/romagazin\/?product=mari-inventatori","title":{"rendered":"MARI INVENTATORI"},"content":{"rendered":"

\"Mari_inventatori_M\"<\/a>De mii de ani, curiozitatea \u015fi nevoia g\u0103sirii de solu\u0163ii la problemele practice de zi cu zi au inspirat oamenii \u015fiau condus la dezvoltarea tehnologiei \u015fi a \u015ftiin\u0163ei, l\u0103rgind astfel abilit\u0103\u0163ile noastre de a schimba lumea. Multe dintre inven\u0163iile secolelor trecute au devenit piatra de fundament a lumii de ast\u0103zi prin furnizarea de r\u0103spunsuri la \u00eentreb\u0103ri despre corpul uman, mediul \u00eenconjur\u0103tor sau fenomenele naturale.<\/p>\n

Romfilatelia<\/strong> dedic\u0103 emisiunea de m\u0103rci po\u015ftale Mari Inventatori<\/em><\/strong> unor figuri reprezentative ale progresului tehnic \u015fi \u015ftiin\u0163ific mondial, cele 4 timbre ilustr\u00e2ndu-i pe Leonardo daVinci, Thomas Alva Edison, Nikola Tesla \u015fi Albert Einstein.<\/em><\/p>\n

Timbrul cu valoarea nominal\u0103 de 3,30 lei<\/strong> \u00eel \u00eenf\u0103\u0163i\u015feaz\u0103 pe Nikola Tesla<\/em><\/strong> (1856 – 1943) al\u0103turi de o imagine a motorului cu induc\u0163ie<\/strong> alimentat cu ajutorul curentului alternativ. Imagina\u0163ia tehnic\u0103 a inventatorului s\u00e2rbo-american, sus\u0163inut\u0103 de o fantastic\u0103 capacitate de concentrare \u015fi motiva\u0163ie intens\u0103, a fost \u00een plin\u0103 manifestare \u00eenc\u0103 de la o v\u00e2rst\u0103 fraged\u0103: credea c\u0103 \u00eentr-o bun\u0103 zi vaputea s\u0103 fotografieze g\u00e2ndurile oamenilor. Tesla a l\u0103sat \u00een urm\u0103 mai bine de 200 de inven\u0163ii. Crea\u0163iile sale au inclus realiz\u0103ri extraordinare precum arcul electric, motorul de curent alternativ \u015fi sistemele de curent alternativ. Este faimos pentru bobina de induc\u0163ie pentru curen\u0163i alternativi de \u00eenalt\u0103 frecven\u0163\u0103. De asemenea, Tesla a introdus conceptul de cuptor cu microunde. El a avut o puternic\u0103 intui\u0163ie a electricit\u0103\u0163ii \u015fi a undelor radio, ceea ce i-a permis s\u0103 proiecteze ma\u015fini func\u0163ionale.<\/p>\n

Pe timbrul cu valoarea nominal\u0103 de 3,60 lei<\/strong> este ilustrat portretul inventatorului american Thomas Alva Edisson<\/em><\/strong> (1847 – 1931), cunoscut ca \u201eMagicianul din Menlo Park\u201d<\/em>, al\u0103turi de cea mai cunoscut\u0103 inven\u0163ie a sa: becul cu filament incandescent<\/strong>, descoperire epocal\u0103 f\u0103r\u0103 de care nu ne putem imagina prezentul. Un veritabil autodidact, Edison a contribuit la binele umanit\u0103\u0163ii printr-o serie de inven\u0163ii \u00een domeniul telegrafiei, telefoniei, electricit\u0103\u0163ii, cinematografiei sau a \u00eenregistr\u0103rii mecanice a sunetului. Credin\u0163a \u00een auto-\u00eembun\u0103t\u0103\u0163ire a p\u0103strat-o pe tot parcursul vie\u0163ii sale, aceasta \u00eenso\u0163indu-l de asemenea permanent \u00een experimentele sale menite s\u0103 contribuie la evolu\u0163ia tehnologic\u0103 \u015fi \u015ftiin\u0163ific\u0103 din vremea sa.<\/p>\n

Pe timbrul cu valoarea nominal\u0103 de 4,30 lei<\/strong> reg\u0103sim portretul marelui fizician teoretician Albert Einstein<\/em><\/strong> (1879 – 1955) al\u0103turi de celebra ecua\u0163ie a Teoriei relativit\u0103\u0163ii E = mc2<\/strong>, transpus\u0103 pe marca po\u015ftal\u0103.<\/p>\n

Fizician american de origine german\u0103, \u00eenc\u0103 de t\u00e2n\u0103r a ar\u0103tat o curiozitate vie pentru natur\u0103 \u015fi o abilitate \u00eenn\u0103scut\u0103 \u00een \u00een\u0163elegerea conceptelor matematice dificile.<\/p>\n

\u00cen 1905 public\u0103 cea mai important\u0103 lucrare a sa, \u201eAsupra electrodinamicii corpurilor \u00een mi\u015fcare\u201d, ce avea s\u0103 fie cunoscut\u0103 mai t\u00e2rziu sub numele de Teoria relativit\u0103\u0163ii restr\u00e2nse<\/em>.<\/p>\n

Dup\u0103 1919, Einstein, devenit renumit la nivel mondial, a activat pentru cauza dezarm\u0103rii interna\u0163ionale \u015fi a guvern\u0103rii mondiale. De\u015fi Einstein s-a dedicat mult cauzelor politice \u015fi sociale, \u015ftiin\u0163a a fost \u00eentotdeauna pe primul plan, confirm\u00e2nd astfel una dintre ideile \u00een care credea \u015fi anume c\u0103 numai descoperirea naturii universului ar avea un \u00een\u0163eles de durat\u0103. Scrierile sale includ: Relativitatea: teoria special\u0103 \u015fi generalizat\u0103 (1916), Lumea a\u015fa cum o v\u0103d eu (1934), Evolu\u0163ia fizicii (1938) \u015fi Din ultimii mei ani (1950)<\/em>.<\/p>\n

Pe timbrul cu valoarea nominal\u0103 de 14,50 lei<\/strong> este reprezentat \u201eMaestrul Rena\u015fterii\u201d<\/em>, cum a fost numit Leonardo da Vinci <\/em>(1452 – 1519), \u00eempreun\u0103 cu una din crea\u0163iile sale, o instala\u0163ie mecanic\u0103 pentru irigarea terenurilor arabile<\/strong>. Leonardo da Vinci se \u00eenscrie \u00een curentul Rena\u015fterii, deta\u015f\u00e2ndu-se \u00eens\u0103 de ceilal\u0163i creatori ai vremii at\u00e2t prin diferen\u0163a de metod\u0103 \u015fi viziune, c\u00e2t \u015fi datorit\u0103 m\u0103iestriei prin care a excelat \u00een numeroase domenii precum pictur\u0103, sculptur\u0103, arhitectur\u0103 sau inginerie. Printre principalele inven\u0163ii se num\u0103r\u0103 diferitele tipuri de ma\u015fini folosite at\u00e2t pentru protec\u0163ia, c\u00e2t \u015fi pentru asediul unui ora\u015f, munca sa de inventator fiind str\u00e2ns legat\u0103 de situa\u0163ia socio-politic\u0103 a statelor italiene \u015fi rela\u0163ia conflictual\u0103 dintre acestea. Carnetele sale vorbesc despre un num\u0103r mare de inven\u0163ii, printre care pompa hidraulic\u0103, submarinul, carul de lupt\u0103, rulmentul cu bile, costumul de scafandru, podul rotitor, ma\u015fini de zburat, ma\u015fina cu auto-propulsie, etc.<\/p>\n

Pe plicul \u201eprima zi\u201d este reprezentat Arhimede<\/em><\/strong>, celebrul \u00eenv\u0103\u0163at al lumii antice. Realiz\u0103rile sale se \u00eenscriu \u00een numeroase domenii \u015ftiin\u0163ifice: matematic\u0103, fizic\u0103, astronomie, inginerie \u015fi filozofie. Este cunoscut \u00een special datorit\u0103 principiului lui Arhimede<\/em>, pe care l-a descris \u00een tratatul s\u0103u Despre corpurile plutitoare. Acest principiu stipuleaz\u0103 c\u0103 un corp solid scufundat \u00eentr-un fluid este \u00eempins de jos \u00een sus de c\u0103tre acesta, cu o for\u0163\u0103 egal\u0103 cu greutatea volumului de fluid dezlocuit de acel corp. Alte scrieri ale lui Arhimede: Despre Echilibrul Planelor, M\u0103surarea cercului, Despre Spirale, Despre Sfer\u0103 \u015fi Cilindru, Despre Conoide \u015fi Sferoide, Problema bovinelor, Calculul Firelor de Nisip, Metoda Teoremelor Mecanicii<\/em>.<\/p>\n

Romfilatelia mul\u0163ume\u015fte domnului inginer Aurel Tudorache pentru sprijinul acordat \u00een realizarea acestei emisiuni de m\u0103rci po\u015ftale. <\/em><\/strong>
\nData de aparitie: 2014-12-17<\/p>\n

\"Mari_inventatori_box\"<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

De mii de ani, curiozitatea \u015fi nevoia g\u0103sirii de solu\u0163ii la problemele practice de zi cu zi au inspirat oamenii […]<\/p>\n","protected":false},"featured_media":2051725,"template":"","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}}},"product_cat":[2672,2618],"product_tag":[],"class_list":{"0":"post-2051724","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-2672","7":"product_cat-colectii-anuale","8":"desktop-align-left","9":"tablet-align-left","10":"mobile-align-left","12":"first","13":"instock","14":"featured","15":"taxable","16":"shipping-taxable","17":"product-type-grouped","18":"add-to-wishlist-before_image"},"_links":{"self":[{"href":"https:\/\/romfilatelia.ro\/romagazin\/index.php?rest_route=\/wp\/v2\/product\/2051724"}],"collection":[{"href":"https:\/\/romfilatelia.ro\/romagazin\/index.php?rest_route=\/wp\/v2\/product"}],"about":[{"href":"https:\/\/romfilatelia.ro\/romagazin\/index.php?rest_route=\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/romfilatelia.ro\/romagazin\/index.php?rest_route=\/wp\/v2\/media\/2051725"}],"wp:attachment":[{"href":"https:\/\/romfilatelia.ro\/romagazin\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2051724"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/romfilatelia.ro\/romagazin\/index.php?rest_route=%2Fwp%2Fv2%2Fproduct_cat&post=2051724"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/romfilatelia.ro\/romagazin\/index.php?rest_route=%2Fwp%2Fv2%2Fproduct_tag&post=2051724"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}