Alfven Teorisi 1942\u2019de \u0130sve\u00e7li fizik\u00e7i Hannes Alfven taraf\u0131ndan, gezegenlerin, g\u00fcne\u015f taraf\u0131ndan y\u0131ld\u0131zlararas\u0131 gaz ve toz bulutlar\u0131ndan yakalanan maddelerden olu\u015ftu\u011funa dair ortaya at\u0131lan teori. Bu teoriye g\u00f6re atomlar g\u00fcne\u015fe do\u011fru d\u00fc\u015ferken iyonize olur ve G\u00fcne\u015fin manyetik alan\u0131n\u0131n etkisine girerler. \u0130yonlar G\u00fcne\u015fin ekvator d\u00fczleminde, yani gezegenlerin bulundu\u011fu ku\u015fakta yo\u011funla\u015fm\u0131\u015flard\u0131r. Orijinal formuyla bu teori \u00f6zellikle i\u00e7 gezegenleri a\u00e7\u0131klamakta g\u00fc\u00e7l\u00fck \u00e7ekmi\u015ftir; fakat G\u00fcne\u015f sisteminin meydana gelmesinde manyetohidrodinami\u011fin rol\u00fcn\u00fc vurgulamas\u0131 a\u00e7\u0131s\u0131ndan \u00f6nemlidir.<\/p>\n
Hannes Alfven, (Olof G\u00f6sta) (d. 30 May\u0131s 1908, Norrk\u00f6ping, \u0130sve\u00e7), \u0130sve\u00e7li astrofizik\u00e7i. Molek\u00fcl, iyon ve elektronlann olu\u015fturdu\u011fu gaz k\u00fcmeleri olan plazmalann incelenmesini konu edinen plazma fizi\u011finin kurulmas\u0131na katk\u0131lan nedeniyle Frans\u0131z Lo-uis Neel\u2019le birlikte 1970 Nobel Fizik \u00d6d\u00fcl\u00fc\u2019 n\u00fc kazand\u0131.<\/p>\n
\u00d6\u011frenimini Uppsala \u00dcniversitesi\u2019nde tamamlayan Alfven, 1940\u2019ta Stockholm\u2019daki Kraliyet Teknoloji Enstit\u00fcs\u00fc\u2019nde \u00e7al\u0131\u015fmaya ba\u015flad\u0131. 1930\u2019lann sonlan ve 1940\u2019lann ba\u015flannda uzay fizi\u011fi alan\u0131na \u00f6nem\u00fc katk\u0131larda bulundu. Belirli ko\u015fullar alt\u0131ndaki plazman\u0131n, i\u00e7inden ge\u00e7en magnetik ak\u0131 \u00e7izgilerine g\u00f6re devindi\u011fini \u00f6ne s\u00fcren donmu\u015f ak\u0131 teoremi bu katk\u0131lardand\u0131r. Alfven, sonralan kozmik \u0131\u015f\u0131nlann k\u00f6kenini a\u00e7\u0131klamakta da bu kavramdan yararland\u0131. 1939\u2019da, magnetik f\u0131rt\u0131nalara ve kuzey \u0131\u015f\u0131\u011f\u0131na ili\u015fkin kuram\u0131n\u0131 yay\u0131mlayan Alfven, bu kuramla \u00e7a\u011fda\u015f magnetosfer (D\u00fcnya\u2019n\u0131n magnetik alan b\u00f6lgesi) kuram\u0131n\u0131 \u00f6nemli \u00f6l\u00e7\u00fcde etkiledi. Aynca, bir magnetik alandaki y\u00fckl\u00fc bir par\u00e7ac\u0131\u011f\u0131n karma\u015f\u0131k sarmal hareketini kolayca hesaplamay\u0131 sa\u011flayan bir matematiksel yakla\u015ft\u0131rma y\u00f6ntemi de buldu.<\/p>\n
Magnetik alan etkisindeki plazmalann incelenmesini konu edinen magnetohidrodi-nami\u011fin (MHD) \u00f6nc\u00fcs\u00fc say\u0131lan Alfven\u2019in \u00e7al\u0131\u015fmalan \u00e7ekirdek kayna\u015fmas\u0131 (f\u00fczyon) denetimine y\u00f6nelik \u00e7abalara temel olu\u015fturdu.<\/p>\n
\u0130sve\u00e7 h\u00fck\u00fcmetiyle d\u00fc\u015ft\u00fc\u011f\u00fc say\u0131s\u0131z anla\u015fmazl\u0131\u011f\u0131n ard\u0131ndan Alfven 1967\u2019de, San Diego\u2019daki California \u00dcniversitesi\u2019nde g\u00f6rev ald\u0131. Daha sonra bu g\u00f6revin yam s\u0131ra Oslo\u2019daki Kraliyet Enstit\u00fcs\u00fc\u2019nde de ders vermeye ba\u015flad\u0131. \u0130lk ara\u015ft\u0131rmalann\u0131n \u00e7o\u011fu-<\/p>\n
Anglosakson krallan aras\u0131nda eksiksiz bir ya\u015fam\u00f6yk\u00fcs\u00fc yaz\u0131lan tek kral Alfred\u2019dir. 893\u2019te Galli bilgin Asser\u2019\u0131n yazd\u0131\u011f\u0131 bu ya\u015fam\u00f6yk\u00fcs\u00fc kapsaml\u0131 ve de\u011ferli bilgiler i\u00e7erir. Kitaptan Alfred\u2019in sevgi dolu, \u015fefkatli, sorumluluklar\u0131n\u0131n bilincinde, hastayken bile \u00e7al\u0131\u015fmaktan geri kalmayan bir ki\u015fili\u011fe
\nnu 1950\u2019de yay\u0131mlanan Cosmical Electrodv-namics\u2019de (Kozmik Elektrodinamik) toplayan Alfven\u2019in, On the Origin of the Solar System (1954; G\u00fcne\u015f Sisteminin K\u00f6keni \u00dczerine), Worlds-Antiworlds (1966; D\u00fcn-yalar-Kar\u015f\u0131d\u00fcnyalar) ve Cosmic Plasma (1981; Kozmik Plazma) adl\u0131 \u00fc\u00e7 kitab\u0131 daha vard\u0131r.<\/p>\n","protected":false},"excerpt":{"rendered":"
Alfven Teorisi 1942\u2019de \u0130sve\u00e7li fizik\u00e7i Hannes Alfven taraf\u0131ndan, gezegenlerin, g\u00fcne\u015f taraf\u0131ndan y\u0131ld\u0131zlararas\u0131 gaz ve toz bulutlar\u0131ndan yakalanan maddelerden olu\u015ftu\u011funa dair ortaya at\u0131lan teori. Bu teoriye g\u00f6re atomlar g\u00fcne\u015fe do\u011fru d\u00fc\u015ferken…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[2968],"class_list":["post-8087","post","type-post","status-publish","format-standard","hentry","category-teknoloji","tag-teori"],"_links":{"self":[{"href":"https:\/\/www.ilkkimbuldu.com\/index.php?rest_route=\/wp\/v2\/posts\/8087"}],"collection":[{"href":"https:\/\/www.ilkkimbuldu.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ilkkimbuldu.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ilkkimbuldu.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ilkkimbuldu.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=8087"}],"version-history":[{"count":1,"href":"https:\/\/www.ilkkimbuldu.com\/index.php?rest_route=\/wp\/v2\/posts\/8087\/revisions"}],"predecessor-version":[{"id":8088,"href":"https:\/\/www.ilkkimbuldu.com\/index.php?rest_route=\/wp\/v2\/posts\/8087\/revisions\/8088"}],"wp:attachment":[{"href":"https:\/\/www.ilkkimbuldu.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=8087"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ilkkimbuldu.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=8087"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ilkkimbuldu.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=8087"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}