{"id":14236,"date":"2023-01-23T06:59:12","date_gmt":"2023-01-23T06:59:12","guid":{"rendered":"https:\/\/www.dumitra.net\/blog\/?p=14236"},"modified":"2023-01-23T07:05:21","modified_gmt":"2023-01-23T07:05:21","slug":"pisica-lui-schrodinger-a-fost-sau-n-a-fost-amor-cu-finalizare","status":"publish","type":"post","link":"https:\/\/www.dumitra.net\/blog\/?p=14236","title":{"rendered":"Pisica lui Schr\u00f6dinger. A fost sau n-a fost amor cu finalizare?"},"content":{"rendered":"\n

Unul dintre profesorii mei din facultate, care n-avea niciun chef s\u0103 o fac\u0103 pe simpaticul (e \u00een lista mea de prieteni FB; v\u0103 salut, domnule profesor!), dar cu metod\u0103 eficient\u0103 de lucru cu studen\u021bii, zicea a\u0219a: \u201dDe la Burebista-ncoace, c\u0103r\u021bile din c\u0103r\u021bi se face \u0219i ziarele din reviste.\u201d <\/p>\n\n\n\n

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E clar, sper, dezacordul e c\u0103utat-inten\u021bionat \u0219i face bine la rim\u0103. \u0218i la \u00eenc\u0103 ceva, dar nu e momentul acum s\u0103 detaliez.<\/p>\n\n\n\n

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Cartea asta e ilustrarea perfect\u0103 a zicalei profului meu (cite\u0219ti ultima pagin\u0103, \u201dMul\u021bumiri\u201d, \u0219i-\u021bi dai seama ce vreau s\u0103 zic). Nu-i vreo carte fabuloas\u0103 (de\u0219i s-ar putea s\u0103 te la\u0219i sedus de \u00een\u0219iruirea celor dou\u0103 nominaliz\u0103ri de pe copert\u0103), dar nici de neglijat nu e, mai ales dac\u0103 \u021bi-au pl\u0103cut fizica, matematica \u0219i urm\u0103re\u0219ti ce impact, devastator sau progresist, au descoperirile \u0219tiin\u021bifice asupra (ne)mersului omenirii. <\/p>\n\n\n\n

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Vei putea \u00een\u021belege cartea mai mult dec\u00e2t mine, \u00een mai toate p\u0103r\u021bile ei nonfic\u021bionale. Ajut\u0103 mult \u0219i scriitura tip investiga\u021bie jurnalistic\u0103, ici-colo pres\u0103rat\u0103 cu referiri erotice (care nu trec totu\u0219i de faza de masturbare pe sanatoriu, deci f\u0103r\u0103 finalizare, s\u0103 nu ave\u021bi, doamnelor, a\u0219tept\u0103ri prea mari), ca s\u0103 fie \u0219i ceva piper, dac\u0103 dulce, ioc.<\/p>\n\n\n\n

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\u00cen fine, nu e risc de glicemie crescut\u0103, asta vreau s\u0103 spun, pe scurt. Ceea ce e \u0219i pe gustul meu. De dulce zic…Mai mult, s-ar putea ca, degetele noastre fiind obi\u0219nuite din social-media cu scroll la intervale mici-mici, lectura s\u0103 curg\u0103 bine \u0219i s-o dai gata \u00een c\u00e2teva ore sau ture cu metroul – ilustrare palpabil\u0103 a noii zicale: suntem prea gr\u0103bi\u021bi s\u0103 citim c\u0103r\u021bi groase \u0219i scumpe. <\/p>\n\n\n\n

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\u0218i pot \u00eentru c\u00e2tva fi de acord.<\/p>\n\n\n\n

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Eu chiar \u021bi-a\u0219 (dac\u0103-mi permi\u021bi) sugera expres s\u0103 cite\u0219ti capitolul cu pisica lui Schr\u00f6dinger, pentru c\u0103 a devenit o referin\u021b\u0103 comun\u0103, banal\u0103 (\u0219i, probabil, prea pu\u021bin \u00een\u021beleas\u0103 \u00een esen\u021ba ei), mirosind a snobism de turnule\u021b format din cel pu\u021bin cinci c\u0103r\u021bi pe noptier\u0103. <\/p>\n\n\n\n

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Din capul locului avertizez, iubitorii de pisici sunt ruga\u021bi s\u0103 termine aici lectura acestui text, urmeaz\u0103 descrierea unui experiment de o cruzime inimaginabil\u0103; nu e un cuv\u00e2nt mare, c\u0103 \u0219i pentru mine, care am \u00eenc\u0103 co\u0219maruri c\u0103 nu trec examenul de matematic\u0103, e greu de imaginat).<\/p>\n\n\n\n

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Pisica lui Schr\u00f6dinger era \u0219i vie, \u0219i moart\u0103 \u00een acela\u0219i timp. Experimentul lui s-a numit Gedankenexperiment \u0219i e, de fapt, o metafor\u0103 frumoas\u0103 ca s\u0103 explice principiul incertitudinii (nedetermin\u0103rii) pe care l-a demonstrat ini\u021bial Heisenberg.<\/p>\n\n\n\n

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\u00cen fizica cuantic\u0103, nu poti sa determini cu certitudine \u0219i pozitia, \u0219i viteza unei particule. Dac\u0103 \u00eei fixezi pozi\u021bia, nu mai po\u021bi s\u0103 spui nimic despre mi\u0219carea ei. Iar dac\u0103 \u0219tii despre cum se mi\u0219c\u0103, nu mai \u0219tii unde se afl\u0103. <\/p>\n\n\n\n

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Asta face pisica lui Schr\u00f6dinger (vezi explica\u021bia de sub foto). \u0218tii c\u0103 pisica e \u00een\u0103untru, \u00een cutie, dar nu po\u021bi s\u0103 spui dac\u0103 e vie sau moart\u0103. Pare un paradox. Meg\u00e2nd cu ra\u021bionamentul mai departe ajungem la nedeterminare metafizic\u0103: o (orice) particul\u0103 cuantic\u0103, inclusiv din noi, din fiin\u021ba noastr\u0103, nu poti sa o cuno\u0219ti \u00een totalitate, nu \u0219tii dac\u0103 o ai sau nu, nu \u0219tii dac\u0103 se misc\u0103 sau dac\u0103 mai e vie. <\/p>\n\n\n\n

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Bun. M-am lungit cam mult. Mai zic doar c\u0103 \u0218tefan, c\u0103ruia i-am sugerat s\u0103 o citeasc\u0103, sunt absolut sigur\u0103 c\u0103 o va \u00een\u021belege mai mult \u0219i mai bine, \u00eei va fi mai util\u0103 dec\u00e2t \u00eemi e mine. <\/p>\n\n\n\n

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Pentru c\u0103, cum deun\u0103zi zicea resemnat\u0103 o doamn\u0103 \u00een vestiarul s\u0103lii de sport, cu referire la sl\u0103bit, eu am pierdut lupta cu matematica. <\/p>\n\n\n\n

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Cartea mi-a fost d\u0103ruit\u0103 la t\u00e2rgul de carte Gaudeamus de Bogdan Alexandru St\u0103nescu, director editorial Anansi Contemporan. <\/p>\n\n\n\n

Mul\u021bumesc \u00eenc\u0103 o dat\u0103, cartea m-a acompaniat pl\u0103cut \u00eentr-o c\u0103l\u0103torie de \u00eenceput de ianuarie \u00eensorit.<\/p>\n\n\n\n

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Traducere de Marin M\u0103laicu-Hondrari.<\/p>\n\n\n\n

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\"\"\/
\u201dPisica lui Schr\u00f6dinger: O pisic\u0103, \u00eempreun\u0103 cu un flacon cu otrav\u0103 \u00eenchis, sunt plasate \u00eentr-o cutie protejat\u0103 de orice decoeren\u021b\u0103 cuantic\u0103<\/a> indus\u0103 de mediul extern. Dac\u0103 un detector Geiger-M\u00fcller<\/a> detecteaz\u0103 o radia\u021bie atunci flaconul va fi spart, eliber\u00e2nd otrava care va ucide pisica. Mecanica cuantic\u0103<\/a> sugereaz\u0103 c\u0103 dup\u0103 o perioad\u0103 pisica este concomitent<\/em>  vie \u0219i<\/em>  moart\u0103<\/a>. Totu\u0219i, c\u00e2nd ne uit\u0103m \u00een cutie, vedem pisica ori<\/em> vie, ori<\/em> moart\u0103, \u0219i nu un amestec de vie \u0219i<\/em>  moart\u0103.\u201d Surs\u0103 foto: Wikipedia<\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"

Unul dintre profesorii mei din facultate, care n-avea niciun chef s\u0103 o fac\u0103 pe simpaticul (e \u00een lista mea de prieteni FB; v\u0103 salut, domnule profesor!), dar cu metod\u0103 eficient\u0103 de lucru cu studen\u021bii,...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0,"footnotes":""},"categories":[1413],"tags":[2250,2249,2251],"class_list":["post-14236","post","type-post","status-publish","format-standard","hentry","category-raftul-lui-radu","tag-benjamin-labatut","tag-cand-nu-mai-intelegem-lumea-recenzie-pe-bune","tag-cum-e-cartea-cand-nu-mai-intelegem-lumea"],"_links":{"self":[{"href":"https:\/\/www.dumitra.net\/blog\/index.php?rest_route=\/wp\/v2\/posts\/14236","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.dumitra.net\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.dumitra.net\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.dumitra.net\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.dumitra.net\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=14236"}],"version-history":[{"count":6,"href":"https:\/\/www.dumitra.net\/blog\/index.php?rest_route=\/wp\/v2\/posts\/14236\/revisions"}],"predecessor-version":[{"id":14245,"href":"https:\/\/www.dumitra.net\/blog\/index.php?rest_route=\/wp\/v2\/posts\/14236\/revisions\/14245"}],"wp:attachment":[{"href":"https:\/\/www.dumitra.net\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=14236"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.dumitra.net\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=14236"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.dumitra.net\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=14236"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}