{"id":17022,"date":"2015-10-01T14:37:31","date_gmt":"2015-10-01T11:37:31","guid":{"rendered":"http:\/\/109.232.216.219\/~bilimvegelecek\/?p=17022"},"modified":"2018-01-18T14:43:51","modified_gmt":"2018-01-18T11:43:51","slug":"einstein-neden-onemli","status":"publish","type":"post","link":"https:\/\/bilimvegelecek.com.tr\/index.php\/2015\/10\/01\/einstein-neden-onemli","title":{"rendered":"Einstein neden \u00f6nemli?"},"content":{"rendered":"

Einstein ilk b\u00fcy\u00fck ba\u015far\u0131s\u0131n\u0131, 1905\u2019te yay\u0131mlad\u0131\u011f\u0131 ve \u00f6zel g\u00f6relili\u011fi de i\u00e7eren d\u00f6rt sars\u0131c\u0131 makaleyle kazand\u0131. On y\u0131l sonra, teoriye k\u00fctle\u00e7ekimini de ekleyerek geni\u015fletti ve genel g\u00f6relili\u011fi yaratt\u0131. Bu d\u00fc\u015f\u00fcnce, Newton\u2019un fizi\u011fini y\u0131karak uzay ve zaman g\u00f6r\u00fc\u015f\u00fcm\u00fcz\u00fc yeniden tan\u0131mlad\u0131. Ge\u00e7ti\u011fimiz y\u00fczy\u0131l boyunca Einstein\u2019\u0131n fikirleri k\u00fclt\u00fcr ve sanatla kar\u0131\u015farak d\u00fcnyam\u0131z\u0131 sonsuz ve kal\u0131c\u0131 bir bi\u00e7imde \u015fekillendirmi\u015ftir.<\/em><\/p>\n

Prof. Dr. Brian Greene
\n<\/strong>Columbia \u00dcniversitesi Fizik ve Matematik Profes\u00f6r\u00fc, s\u00fcpersicim teorisi \u00e7al\u0131\u015f\u0131yor<\/p>\n

Albert Einstein, iki \u015feyin sonsuz olabilece\u011fini s\u00f6ylemi\u015ftir: Evren ve insanlar\u0131n aptall\u0131\u011f\u0131. Evren hakk\u0131nda o kadar emin olmad\u0131\u011f\u0131n\u0131 da itiraf etti. Bunu duydu\u011fumuzda tebess\u00fcm ettik, hatta g\u00fcld\u00fck; ama al\u0131nmad\u0131k. Bunun sebebi ise y\u00fczy\u0131l\u0131n ba\u015f\u0131ndaki, cana yak\u0131n ve babacan g\u00f6r\u00fcnt\u00fcs\u00fc ile \u201cEinstein\u201d ismidir. Kar\u015f\u0131m\u0131zda, portreleri -bisiklete binen, dilini \u00e7\u0131kartan, parlak g\u00f6zleriyle bizlere bakan- ortak k\u00fclt\u00fcrel haf\u0131zam\u0131z taraf\u0131ndan y\u00fcceltilen, iyi huylu ve da\u011f\u0131n\u0131k sa\u00e7l\u0131 bir bilim dehas\u0131 g\u00f6rmekteyiz. Einstein, sadeli\u011fin ve d\u00fc\u015f\u00fcnsel ke\u015fif g\u00fcc\u00fcn\u00fcn sembol\u00fc olmu\u015ftur.<\/p>\n

Muhte\u015fem Y\u0131l (Annus Mirabilis) dedikleri 1905\u2019te bilim d\u00fcnyas\u0131 i\u00e7erisinde \u00fcnlenmi\u015ftir. G\u00fcnde sekiz saat, haftada alt\u0131 g\u00fcn \u00e7al\u0131\u015ft\u0131\u011f\u0131 \u0130svi\u00e7re Bern\u2019deki patent ofisindeki bo\u015f zamanlar\u0131nda, fizi\u011fin gidi\u015fat\u0131n\u0131 de\u011fi\u015ftiren d\u00f6rt makale yazd\u0131. Ayn\u0131 y\u0131l\u0131n Mart ay\u0131nda, uzun zamand\u0131r dalga olarak tan\u0131mlanan \u0131\u015f\u0131\u011f\u0131n, esas\u0131nda foton denen par\u00e7ac\u0131klardan olu\u015ftu\u011funu ileri s\u00fcrd\u00fc. \u0130ki ay sonra, May\u0131s\u2019ta, Einstein\u2019\u0131n hesaplamalar\u0131, atomik hipotez i\u00e7in test edilebilir tahminler sa\u011flam\u0131\u015ft\u0131. Haziran ay\u0131nda, uzay ve zaman\u0131n o g\u00fcnde de\u011fin kimsenin ummad\u0131\u011f\u0131 muazzam bir bi\u00e7imde davrand\u0131\u011f\u0131n\u0131 ortaya \u00e7\u0131karan; k\u0131saca, h\u0131z ve zaman\u0131n her ikisinin de g\u00f6zlemciye ba\u011fl\u0131 oldu\u011funu s\u00f6yleyen; \u00f6zel g\u00f6relilik teorisini tamamlad\u0131. Eyl\u00fcl 1905\u2019te Einstein, \u00f6zel g\u00f6relili\u011fin sonucunu elde etti; d\u00fcnyan\u0131n en \u00fcnl\u00fc denklemi olacak olan, .<\/p>\n

Bilim genellikle ad\u0131m ad\u0131m ilerler. Bilimin zilleri, az ve seyrek katk\u0131lar ile b\u00fcy\u00fck ve radikal de\u011fi\u015fimleri haber vermek i\u00e7in \u00e7alar. Fakat bir adam, bu zili bir y\u0131lda d\u00f6rt defa \u00e7ald\u0131; bu yarat\u0131c\u0131 bir g\u00f6r\u00fc\u015f\u00fcn muazzam bir d\u0131\u015favurumudur. Bilimsel kurumlar k\u0131sa s\u00fcrede Einstein\u2019\u0131n, ger\u00e7eklik anlay\u0131\u015f\u0131n\u0131n gidi\u015fat\u0131n\u0131 de\u011fi\u015ftiren \u00e7al\u0131\u015fmas\u0131n\u0131n yank\u0131lar\u0131n\u0131 duydular. Buna ra\u011fmen geni\u015f kitleler i\u00e7in Einstein hen\u00fcz Einstein olmam\u0131\u015ft\u0131.<\/p>\n

Bu durum 6 Kas\u0131m 1919\u2019da de\u011fi\u015fecekti.<\/p>\n

Einstein \u00f6zel g\u00f6relilikte, hi\u00e7bir \u015feyin \u0131\u015f\u0131k h\u0131z\u0131ndan daha h\u0131zl\u0131 gidemeyece\u011fini yazd\u0131. Bu durum Newton\u2019un, k\u00fctle\u00e7ekim etkisinin t\u00fcm uzaya aniden yay\u0131ld\u0131\u011f\u0131 k\u00fctle\u00e7ekim teorisine kar\u015f\u0131t bir zemin haz\u0131rlam\u0131\u015ft\u0131r. B\u00fcy\u00fcyen bu \u00e7eli\u015fkinin s\u00fcrmesiyle Einstein, Newton\u2019un y\u00fczlerce y\u0131ll\u0131k k\u00fctle\u00e7ekim kurallar\u0131n\u0131 yeniden yazmaya soyundu; en ate\u015fli taraftarlar\u0131 taraf\u0131ndan bile donki\u015fotvari oldu\u011fu bilinen \u00fcrk\u00fct\u00fcc\u00fc bir g\u00f6revdi bu.<\/p>\n

Alman biliminin ba\u015f\u0131ndaki Max Planck ise \u201cEski bir dostun olarak seni buna kar\u015f\u0131 uyarmal\u0131y\u0131m… ba\u015faramayacaks\u0131n, ba\u015farsan bile kimse sana inanmayacak\u201d dedi. Einstein otoriteye boyun e\u011fmedi ve devam etti, yakla\u015f\u0131k on y\u0131l boyunca devam etti.<\/p>\n

Sonunda 1915\u2019te Einstein, k\u00fctle\u00e7ekimini sars\u0131c\u0131 ve farkl\u0131 bir fikir \u00fczerinden, uzay ve zamandaki e\u011filme ve b\u00fck\u00fclmeler gibi yepyeni kelimelerle ifade eden genel g\u00f6relilik teoremini duyurdu. Tuttu\u011funuz \u00e7ay fincan\u0131n\u0131n elinizden kaymas\u0131yla onu zemine \u00e7eken bir d\u00fcnya yerine, genel g\u00f6relilik, gezegenin, \u00e7evresindeki ortam\u0131 b\u00fckt\u00fc\u011f\u00fcn\u00fc ve fincan\u0131n olu\u015fan bu uzay-zaman kanal\u0131ndan kayarak do\u011frudan yere d\u00fc\u015fmesine sebep oldu\u011funu s\u00f6ylemektedir. Einstein\u2019\u0131n a\u00e7\u0131klad\u0131\u011f\u0131 k\u00fctle\u00e7ekimi, evren geometrisine damgas\u0131n\u0131 vurmu\u015ftur.<\/p>\n

Einstein genel g\u00f6relilik teorisini tamamlad\u0131ktan d\u00f6rt y\u0131l sonra, 6 Kas\u0131m 1919\u2019da, g\u00f6ky\u00fcz\u00fcndeki y\u0131ld\u0131z konumlar\u0131n\u0131 belirleyen astronomik \u00f6l\u00e7\u00fcmlerin, Einstein\u2019\u0131n \u00f6ng\u00f6rd\u00fc\u011f\u00fc \u00fczere, Newton kanunlar\u0131n\u0131n s\u00f6ylediklerinden nispeten farkl\u0131 oldu\u011fu d\u00fcnya \u00e7ap\u0131ndaki gazeteler taraf\u0131ndan duyuruldu. Sonu\u00e7lar muzaffer bir \u015fekilde Einstein\u2019\u0131n teorisini do\u011frulad\u0131 ve onu bir gecede sembol haline getirdi. O, Newton\u2019\u0131 deviren ve t\u00fcr\u00fcm\u00fcz\u00fc do\u011fan\u0131n ebedi ger\u00e7eklerine dev bir ad\u0131m daha atlatarak yakla\u015ft\u0131ran insan olmu\u015ftu.<\/p>\n

Zekice i\u011fnelemeler yapacak (\u201cBen militan bir bar\u0131\u015f yanl\u0131s\u0131y\u0131m\u201d gibi) ve ne\u015feli bir \u015fekilde, dahilerin dalg\u0131n dahisi rol\u00fcn\u00fc oynayacakt\u0131. \u015eehir I\u015f\u0131klar\u0131<\/em> filminin (City Lights<\/em>) pr\u00f6miyerinde fla\u015flar patlarken Charlie Chaplin k\u0131rm\u0131z\u0131 hal\u0131 \u00fczerinde birlikte y\u00fcr\u00fcd\u00fckleri Einstein\u2019\u0131n kula\u011f\u0131na bir \u015feyler f\u0131s\u0131ldad\u0131; \u201c\u0130nsanlar beni anlad\u0131klar\u0131 i\u00e7in, seni de anlamad\u0131klar\u0131 i\u00e7in akl\u0131\u015fl\u0131yorlar.\u201d Bu Einstein\u2019\u0131n iyi oynad\u0131\u011f\u0131 bir rold\u00fc ve 1. D\u00fcnya Sava\u015f\u0131\u2019ndan bitap d\u00fc\u015fen geni\u015f halk kitlesi onu i\u00e7tenlikle sahiplendi.<\/p>\n

Einstein\u2019\u0131n toplum i\u00e7ine girmesiyle, g\u00f6relilik hakk\u0131ndaki fikirleri yank\u0131 uyand\u0131rm\u0131\u015fa benziyordu. James Joyce ve T. S. Eliot c\u00fcmleleri par\u00e7alara ay\u0131r\u0131yorlard\u0131. Pablo Picasso ve Marcel Duchamp tuvali deliyorlard\u0131. Arnold Schoenberg ve Igor Stravinsky \u00f6l\u00e7\u00fcy\u00fc bozuyorlard\u0131. Einstein, ger\u00e7ekli\u011fin modas\u0131 ge\u00e7mi\u015f modellerinden uzay ve zaman zincirlerini \u00e7\u0131kart\u0131yordu. Baz\u0131lar\u0131 Einstein\u2019\u0131 20. y\u00fczy\u0131l\u0131n \u00f6nc\u00fc hareketinin bir ilham kayna\u011f\u0131 olarak resmedecek kadar ileri gitti. Einstein geleneksel bir be\u011feni sahibiydi, Bach ve Mozart\u2019\u0131 modern bestecilere tercih ederdi ve yeni Bauhaus mobilyalar\u0131n\u0131, halihaz\u0131rda sahip oldu\u011fu eski dekorasyonu i\u00e7in reddederdi.<\/p>\n

D\u00fcr\u00fcst\u00e7e s\u00f6yleyebilir ki, bir\u00e7ok devrimsel fikir 20. y\u00fczy\u0131lda yay\u0131ld\u0131 ve ku\u015fkusuz bunlar kayna\u015fm\u0131\u015ft\u0131. Einstein, uzun zamand\u0131r savunulan varsay\u0131mlar\u0131n par\u00e7alanarak, nefes kesen yeni bir diyar\u0131n ortaya \u00e7\u0131kar\u0131lmas\u0131n\u0131n ba\u015fl\u0131ca \u00f6rne\u011fiydi. Y\u00fczy\u0131l sonra, Einstein\u2019\u0131n ortaya \u00e7\u0131kard\u0131\u011f\u0131 bu diyar \u00f6nemli \u00f6l\u00e7\u00fcde canl\u0131 ve bereketli olarak kalmaya devam etti.<\/p>\n

1920\u2019li y\u0131llarda, t\u00fcm evrenin k\u00f6keni ve evrimini ara\u015ft\u0131ran modern kozmoloji, genel g\u00f6relilikten do\u011fdu. Rus matematik\u00e7i Aleksandr Freidmann ile Bel\u00e7ikal\u0131 fizik\u00e7i ve rahip Georges Lemaitre birbirlerinden ba\u011f\u0131ms\u0131z olarak, Einstein denklemlerini kullanarak, evrenin geni\u015fliyor olabilece\u011fini g\u00f6sterdiler. Einstein, var\u0131lan bu sonuca direndi ve hatta sabit evreni temin edebilmek i\u00e7in k\u00f6t\u00fc \u015f\u00f6hretli \u201ckozmoloji sabiti\u201dni ekleyerek denklemlerini yeniden d\u00fczenledi. Sonras\u0131nda ise Edwin Hubble taraf\u0131ndan yap\u0131lan g\u00f6zlemlerin uzak galaksilerin h\u0131zla ilerledi\u011fini g\u00f6stermesi, Einstein\u2019\u0131 orijinal denklemlerine geri d\u00f6nmeye ve evrenin geni\u015fledi\u011fini kabul etmeye ikna etti. Geni\u015fleyen bir evrenin bug\u00fcnk\u00fc anlam\u0131, ge\u00e7mi\u015fte daha k\u00fc\u00e7\u00fck bir evren olmas\u0131d\u0131r, bu durumun Lemaitre\u2019nin \u201cilkel atom\u201d olarak adland\u0131rd\u0131\u011f\u0131, ba\u015flang\u0131\u00e7ta var olan par\u00e7ac\u0131\u011f\u0131n geni\u015flemesinden do\u011fan evrene uygulanmas\u0131yla da b\u00fcy\u00fck patlama teorisi do\u011fmu\u015f oldu. Onlarca y\u0131lda, b\u00fcy\u00fck patlama teorisi b\u00fcy\u00fck \u00f6l\u00e7\u00fcde geli\u015ftirildi (bug\u00fcn en yayg\u0131n olarak kabul g\u00f6ren versiyonu enflasyon -\u015fi\u015fme- teorisidir) ve \u00e7e\u015fitli d\u00fczeltmeler yoluyla, g\u00f6zlemsel \u00f6l\u00e7\u00fcmlerden m\u00fckemmel spektrum sonu\u00e7lar\u0131 elde edildi. 2011 y\u0131l\u0131nda Fizik\u2019te Nobel \u00d6d\u00fcl\u00fc alan bir g\u00f6zlem, ge\u00e7en yedi milyar y\u0131lda evrenin sadece geni\u015flemedi\u011fini, ayn\u0131 zamanda geni\u015fleme h\u0131z\u0131n\u0131n artt\u0131\u011f\u0131n\u0131 da g\u00f6stermi\u015ftir.<\/p>\n

Genel g\u00f6relilik kaynakl\u0131 ilk kavram, 1. D\u00fcnya Sava\u015f\u0131 s\u0131ras\u0131nda Rusya\u2019da g\u00f6rev yapan Alman astronom Karl Schwarzschild taraf\u0131ndan y\u00fcr\u00fct\u00fclen analizlerle ortaya \u00e7\u0131kt\u0131. Top\u00e7ular\u0131n mermi y\u00f6r\u00fcngelerini hesaplamay\u0131 bir kenara b\u0131rakan Schwarzschild, Einstein denklemlerinden, G\u00fcne\u015f gibi k\u00fcresel bir cisim taraf\u0131ndan olu\u015fturulan uzay-zaman e\u011frisinin net bir tan\u0131mlamas\u0131n\u0131 veren, ilk kesin \u00e7\u00f6z\u00fcm\u00fcn\u00fc elde etti. Schwarzschild\u2019in elde etti\u011fi sonu\u00e7, beraberinde tuhaf bir \u015feyleri de ortaya \u00e7\u0131karm\u0131\u015ft\u0131.<\/p>\n

Herhangi bir cisim yeteri kadar k\u00fc\u00e7\u00fck \u00f6l\u00e7ekte s\u0131k\u0131\u015ft\u0131r\u0131ld\u0131\u011f\u0131nda -G\u00fcne\u015f\u2019in 5 km\u2019ye s\u0131k\u0131\u015ft\u0131r\u0131lmas\u0131 gibi– sonu\u00e7 olarak uzay-zaman e\u011frisi o kadar ciddi bir boyutta olacakt\u0131r ki, \u0131\u015f\u0131k dahil ona \u00e7ok fazla yakla\u015fan hi\u00e7bir \u015fey ka\u00e7amay\u0131p hapsedilecektir. G\u00fcn\u00fcm\u00fcz dilindeki ifadesiyle, Schwarzschild karadelik olas\u0131l\u0131\u011f\u0131n\u0131 ortaya \u00e7\u0131karm\u0131\u015ft\u0131.<\/p>\n

\"\"
Albert Einstein, Charlie Chaplin ve Elsa Einstein, \u015eehir I\u015f\u0131klar\u0131 filminin pr\u00f6miyerinde, 1931.<\/figcaption><\/figure>\n

O d\u00f6nemlerde, karadeliklere olas\u0131l\u0131k d\u0131\u015f\u0131 g\u00f6z\u00fcyle bak\u0131l\u0131yordu. Fakat g\u00f6zlemler do\u011fru olan\u0131 s\u00f6yledi ve al\u0131nan astronomik veriler karadeliklerin ger\u00e7ek ve \u00e7ok say\u0131da oldu\u011funu ortaya koydu. Onlar \u015fimdilik do\u011frudan g\u00f6zlem i\u00e7in \u00e7ok uzaktalar, fakat kuramsal laboratuvarlara g\u00f6re, karadeliklerin varl\u0131\u011f\u0131 ka\u00e7\u0131n\u0131lmazd\u0131r. 1970\u2019li y\u0131llarda Stephen Hawking\u2019in etkileyici \u00e7al\u0131\u015fmalar\u0131n\u0131n ba\u015flamas\u0131 ile fizik\u00e7iler, karadeliklerin s\u0131rad\u0131\u015f\u0131 do\u011falar\u0131n\u0131n, genel g\u00f6relili\u011fi daha ileriye ta\u015f\u0131ma giri\u015fimleri ve bilhassa kuantum mekani\u011fi ile birle\u015fmesi i\u00e7in ideal deney b\u00f6lgeleri oldu\u011funa b\u00fcy\u00fck \u00f6l\u00e7\u00fcde ikna olmu\u015flard\u0131r (Bkz. \u201cThe Black Hole Test\u201d; Dimitrios Psaltis, Sheperd S. Doeleman). Son zamanlarda en \u00e7ok tart\u0131\u015f\u0131lan konu, kuantum s\u00fcre\u00e7lerinin, karadeli\u011fin i\u00e7 yap\u0131s\u0131 da dahil olmak \u00fczere d\u0131\u015f \u00e7evresi (olay ufku) hakk\u0131ndaki bilgimizi nas\u0131l etkileyebilece\u011fidir. Einstein\u2019\u0131n genel g\u00f6relili\u011fi, g\u00fcn\u00fcm\u00fczdeki ara\u015ft\u0131rma duvar\u0131n\u0131 kaplayan s\u0131k\u0131 dokunmu\u015f bir duvar hal\u0131s\u0131d\u0131r.<\/p>\n

Einstein sosyal bir biliminsan\u0131yd\u0131, fakat b\u00fcy\u00fck bulu\u015flar\u0131 yaln\u0131z cevherlerdi. T\u00fcm bu sezgiler, s\u0131rad\u0131\u015f\u0131 beyni ve yap\u0131s\u0131 nedeniyle mi ortaya \u00e7\u0131km\u0131\u015ft\u0131? Geleneklere uymayan bak\u0131\u015f a\u00e7\u0131s\u0131 nedeniyle mi? Kuvvetli ve kat\u0131 odaklanma yetene\u011fi nedeniyle mi? Belki. Evet. Muhtemelen. Ger\u00e7eklik elbette ki kimsenin bilmedi\u011fi bir \u015feydir. Birilerinin neden o veya bu fikre sahip olabildikleriyle ilgili hik\u00e2yeler anlatabiliriz, fakat as\u0131l \u00f6nemli olan bu sezgi ve d\u00fc\u015f\u00fcncelerin say\u0131s\u0131z etki taraf\u0131ndan \u015fekillendirildi\u011fidir.<\/p>\n

Abart\u0131ya ka\u00e7madan s\u00f6yleyebilece\u011fimiz en iyi \u015fey, Einstein\u2019\u0131n fizi\u011fin derin problemler y\u0131\u011f\u0131n\u0131n\u0131 \u00e7\u00f6zmek i\u00e7in do\u011fru zamanda do\u011fru d\u00fc\u015f\u00fcnceye sahip oldu\u011fudur.<\/p>\n

Ba\u015far\u0131yla tamamlad\u0131\u011f\u0131 her \u015fey ile ve yaratt\u0131\u011f\u0131 efsanenin devam etmesiyle birlikte \u00f6nemli bir soru sorma arzusu da do\u011fmaktad\u0131r: Ba\u015fka bir Einstein daha olabilir mi? E\u011fer anlam\u0131 ba\u015fka bir s\u00fcper dahinin bilimi ilerletece\u011fi ise, cevap kesinlikle evettir. Einstein\u2019\u0131n \u00f6l\u00fcm\u00fcn\u00fcn \u00fczerinden ge\u00e7en yar\u0131m y\u00fczy\u0131lda, b\u00f6ylesi biliminsanlar\u0131 olmu\u015ftur.<\/p>\n","protected":false},"excerpt":{"rendered":"

Einstein ilk b\u00fcy\u00fck ba\u015far\u0131s\u0131n\u0131, 1905\u2019te yay\u0131mlad\u0131\u011f\u0131 ve \u00f6zel g\u00f6relili\u011fi de i\u00e7eren d\u00f6rt sars\u0131c\u0131 makaleyle kazand\u0131. On y\u0131l sonra, teoriye k\u00fctle\u00e7ekimini de ekleyerek geni\u015fletti ve genel g\u00f6relili\u011fi yaratt\u0131. Bu d\u00fc\u015f\u00fcnce, Newton\u2019un fizi\u011fini y\u0131karak uzay ve zaman g\u00f6r\u00fc\u015f\u00fcm\u00fcz\u00fc yeniden tan\u0131mlad\u0131. Ge\u00e7ti\u011fimiz y\u00fczy\u0131l boyunca Einstein\u2019\u0131n fikirleri k\u00fclt\u00fcr ve sanatla kar\u0131\u015farak d\u00fcnyam\u0131z\u0131 sonsuz ve kal\u0131c\u0131 bir bi\u00e7imde \u015fekillendirmi\u015ftir. Prof. […]<\/p>\n","protected":false},"author":918,"featured_media":17023,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[177,1464,26],"tags":[277,657,288,295,1161],"class_list":["post-17022","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-140-sayi","category-dosya","category-fizik","tag-einstein","tag-evren","tag-fizik","tag-gorelilik","tag-kutlecekim"],"acf":[],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t