21 noiembrie<\/b><\/p>\n
<\/p>\n
1905<\/b> – \u00cen revista \u201dAnnalen der Physik\u201d, una dintre cele mai vechi reviste de profil din lume, este publicat articolul \u201dIst die Tr\u00e4gheit eines K\u00f6rpers von seinem Energieinhalt abh\u00e4ngig ?\u201d, \u00een englez\u0103 \u201dDoes the Inertia of a Body Depend Upon Its Energy Content ?\u201d. Dac\u0103 v\u0103 voi spune c\u0103 \u00een acest articol apare cea mai faimoas\u0103 ecua\u021bie din domeniul \u0219tiin\u021bei (E = m<\/b>c<\/i><\/b>2<\/i><\/b> ), probabil c\u0103 v\u0103 ve\u021bi da seama \u0219i cine a fost autorul.<\/p>\n
\u00cen calculele sale, Albert Einstein porne\u0219te de la conceptele clasice de mas\u0103 \u0219i energie, pe care \u00eens\u0103, le dezvolt\u0103 \u00een cu totul alt\u0103 direc\u021bie dec\u00e2t cea promovat\u0103 de sir Isaac Newton.<\/p>\n
Apar astfel, no\u021biuni ca \u201denergie electromagnetic\u0103 spa\u021bial\u0103\u201d, \u201d mi\u0219care uniform\u0103 relativ\u0103\u201d, \u201dspa\u021biul gol\u201d \u0219i poate cel mai spectaculos … ecua\u021biile de rigoare pentru asemenea concepte inedite. Aceste ecua\u021bii vor ar\u0103ta \u0219i \u00een mod practic cum se poate elibera o imens\u0103 cantitate de energie cu ajutorul unei mase relativ mici, informa\u021bii care vor fi folosite \u00een experimente de convertire a masei particulelor subatomice \u00een energie (prin intermediul fuziunii \u0219i fisiunii nucleare).<\/p>\n
Ca \u0219i parantez\u0103 la parantez\u0103, asta m\u0103 duce cu g\u00e2ndul la o discu\u021bie extrem de prozaic\u0103 pe care o aveam cu o domni\u0219oar\u0103 acum un an \u0219i jum\u0103tate, \u00een jurul lui Stade de Gerland din Lyon. Tipa era \u00eentr-o rela\u021bie cu un cercet\u0103tor de la CERN (Conseil Europ\u00e9en pour la Recherche Nucl\u00e9aire), iar tipul venea aproape la fiecare sf\u00e2r\u0219it de s\u0103pt\u0103m\u00e2n\u0103 s\u0103 o vad\u0103 pe \u201dmad-moazel\u0103\u201d. \u00cen mod perfect natural \u0219i justificat, domni\u0219oara student\u0103 \u0219i-a g\u0103sit alt\u0103 \u201djum\u0103tate\u201d, deoarece insipidul \u0219i plictisitorul cercet\u0103re\u021b avea prostul obicei s\u0103 \u00eei povesteasc\u0103 cu ce particule invizibile \u0219i luminoase se delecteaz\u0103, \u00een loc s\u0103 inspire \u00eempreun\u0103 … \u00a0o \u021bigar\u0103, sau \u0219i mai frumos, s\u0103 \u00eempart\u0103 la doi tot fumul vizibil dintr-un club \u00eentunecat.<\/p>\n
…<\/p>\n
S\u0103 ne \u00eentoarcem la Einstein \u0219i la \u201dsl\u0103biciunile\u201d lui … dintre care cea mai frumoas\u0103 delicat\u0103, fragil\u0103, radioas\u0103 \u0219i vulnerabil\u0103 se pare c\u0103 a fost … Marilyn Monroe. Exist\u0103 chiar \u0219i o glum\u0103 simpatic\u0103 despre cei 2, \u00een care vedeta \u00ee\u0219i manifesta interesul de a avea un copil cu omul de \u0219tiin\u021b\u0103. Ea \u00ee\u0219i argumenteaz\u0103 dorin\u021ba spun\u00e2ndu-i acestuia c\u0103 urma\u0219ul lor ar fi sclipitor de inteligent, ca el, \u00a0\u0219i uimitor de frumos, ca ea.<\/p>\n
La care b\u0103tr\u00e2nul Einstein nu a putut dec\u00e2t s\u0103 se \u00eentrebe ce s-ar \u00eent\u00e2mpla dac\u0103 ar fi invers.<\/strong><\/p>\n …<\/p>\n De\u0219i mai to\u021bi \u00eel asociem cu Teoria Relativit\u0103\u021bii, premiul Nobel \u00eel c\u00e2\u0219tig\u0103 \u00een anul 1921 pentru Legile Efectului Fotoelectric, \u00een care reinterpreteaz\u0103 no\u021biuni ca mecanica cuantic\u0103 \u0219i energia electronilor \u0219i fotonilor. Acest lucru se \u00eent\u00e2mpl\u0103 pentru c\u0103 ceilal\u021bi oameni de \u0219tiin\u021b\u0103 nu \u00een\u021beleg deocamdat\u0103 conceptul de relativitate (restr\u00e2ns\u0103 \u0219i general\u0103) \u0219i nu au nici sim\u021bul umorului.<\/p>\n \u00cemi imaginez c\u0103 tot Einstein, \u00eentr-o conferin\u021b\u0103 cu ilu\u0219trii lui colegi, \u00eencerc\u00e2nd s\u0103 le explice teoria relativit\u0103\u021bii pe \u00een\u021belesul lor, le-a spus ceva de genul:<\/p>\n <\/p>\n Dac\u0103 a\u021bi petrece o or\u0103 \u00een preajma unei femei superbe, vi s-ar p\u0103rea c\u0103 a trecut o secund\u0103 … dac\u0103 eu a\u0219 petrece un minut \u00een preajma so\u021biilor voastre mi s-ar p\u0103rea c\u0103 mi-a\u0219 irosi toat\u0103 via\u021ba … asta e relativitatea.<\/b><\/p>\n <\/p>\n","protected":false},"excerpt":{"rendered":" 21 noiembrie 1905 – \u00cen revista \u201dAnnalen der Physik\u201d, una dintre cele mai vechi reviste de profil din lume, este publicat articolul \u201dIst die Tr\u00e4gheit eines K\u00f6rpers von seinem Energieinhalt abh\u00e4ngig ?\u201d, \u00een englez\u0103 \u201dDoes the Inertia of a Body Depend Upon Its Energy Content ?\u201d. Dac\u0103 v\u0103 voi spune c\u0103 \u00een acest articol […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[4],"tags":[],"class_list":["post-360","post","type-post","status-publish","format-standard","hentry","category-diverse"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.sergiumotreanu.ro\/index.php?rest_route=\/wp\/v2\/posts\/360","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.sergiumotreanu.ro\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.sergiumotreanu.ro\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.sergiumotreanu.ro\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.sergiumotreanu.ro\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=360"}],"version-history":[{"count":0,"href":"https:\/\/www.sergiumotreanu.ro\/index.php?rest_route=\/wp\/v2\/posts\/360\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.sergiumotreanu.ro\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=360"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.sergiumotreanu.ro\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=360"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.sergiumotreanu.ro\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=360"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}