{"id":207,"date":"2020-11-13T22:02:07","date_gmt":"2020-11-13T20:02:07","guid":{"rendered":"http:\/\/www.cosmoespai.com\/cat\/?p=207"},"modified":"2020-11-13T22:02:07","modified_gmt":"2020-11-13T20:02:07","slug":"les-quatre-forces-fonamentals-de-lunivers","status":"publish","type":"post","link":"https:\/\/www.cosmoespai.com\/cat\/les-quatre-forces-fonamentals-de-lunivers\/","title":{"rendered":"Les quatre forces fonamentals de l\u2019univers"},"content":{"rendered":"\n<p class=\"has-text-align-justify\">L\u2019univers es regeix per 4 forces fonamentals. Aquestes quatre forces fonamentals han estat descobertes per diferents f\u00edsics de diferents \u00e8poques.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><em><u><strong>La gravetat<\/strong><\/u><\/em><\/h4>\n\n\n\n<p class=\"has-text-align-justify\">Una d\u2019aquestes forces fonamentals \u00e9s la gravetat. Aquesta for\u00e7a va ser descoberta per Newton. Newton va formular la teoria de la gravetat. Aquesta teoria diu que: \u00abTot succeeix com si la mat\u00e8ria atragu\u00e9s a la mat\u00e8ria amb una for\u00e7a que \u00e9s proporcional a les masses i inversament proporcional a la dist\u00e0ncia que les separa\u00bb. La gravetat, que \u00e9s la responsable de que els objectes caiguin quan els deixes anar a la Terra, \u00e9s una for\u00e7a a gran escala que observem a l\u2019univers. Per exemple, el moviment de la Lluna al voltant de la Terra, el sistema solar girant al voltant del nostre centre gal\u00e0ctic&#8230;<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><em><u><strong>L\u2019electromagnetisme<\/strong><\/u><\/em><\/h4>\n\n\n\n<p class=\"has-text-align-justify\">La segona for\u00e7a fonamental de l\u2019univers \u00e9s la for\u00e7a electromagn\u00e8tica. Aquesta for\u00e7a actua a gran i petita escala. \u00c9s la responsable de que els imants s\u2019atreguin en els pols oposats i es repelin quan els pols s\u00f3n iguals. L\u2019electromagnetisme tamb\u00e9 \u00e9s la for\u00e7a fonamental que crea els camps magn\u00e8tics dels planetes i estrelles.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><em><u><strong>La for\u00e7a nuclear forta<\/strong><\/u><\/em><\/h4>\n\n\n\n<p class=\"has-text-align-justify\">Una altra de les quatre for\u00e7es fonamentals que regeix en l\u2019univers \u00e9s la for\u00e7a nuclear forta. Aquesta t\u00e9 una especial import\u00e0ncia, doncs sense ella, no podria existir l\u2019univers. Aquesta for\u00e7a fa que els nuclis dels \u00e0toms siguin estables i no es desintegrin. Als <strong><a href=\"http:\/\/www.cosmoespai.com\/cat\/2020\/07\/06\/quina-estructura-tenen-els-atoms\/\" target=\"_blank\" rel=\"noreferrer noopener\">nuclis dels \u00e0toms<\/a><\/strong> hi ha unes part\u00edcules subat\u00f2miques. S\u00f3n els protons i els neutrons. Tant els protons com els neutrons tenen c\u00e0rregues positives. Normalment, com que tenen les mateixes c\u00e0rregues el\u00e8ctriques, es repel\u00b7lirien entre ells i l\u2019\u00e0tom es desfaria. Quan els cient\u00edfics van descobrir aix\u00f2, es van adonar que hi havia d&#8217;haver una for\u00e7a que fes que els \u00e0toms no es desintegressin. I aquesta for\u00e7a \u00e9s la for\u00e7a nuclear forta. Aquesta for\u00e7a actua a molt petita escala, a mesura subat\u00f2mica.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><em><u><strong>La for\u00e7a nuclear fluixa<\/strong><\/u><\/em><\/h4>\n\n\n\n<p class=\"has-text-align-justify\">L&#8217;\u00faltima de les forces fonamentals que regeixen el nostre univers, \u00e9s la for\u00e7a nuclear fluixa. Aquesta for\u00e7a s\u2019assembla molt, en nom, a la for\u00e7a nuclear forta, per\u00f2 fa tot el contrari. Aquesta for\u00e7a fa que el nucli dels \u00e0toms no sigui estable, i, per tant, que es desintegri. La for\u00e7a nuclear fluixa no t\u00e9 tanta pot\u00e8ncia com la for\u00e7a nuclear forta, i \u00e9s per aquesta ra\u00f3 per la qual la mat\u00e8ria normalment no es desintegra. A l\u2019igual que la for\u00e7a nuclear forta, la for\u00e7a nuclear fluixa actua a una escala subat\u00f2mica.<\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p><strong>Entrades Similars:<\/strong><\/p>\n\n\n\n<p><a href=\"http:\/\/www.cosmoespai.com\/cat\/2020\/05\/19\/quins-son-els-elements-originaris-del-big-bang\/\">Quins s\u00f3n els elements originaris del Big Bang?<\/a><\/p>\n\n\n\n<p><a href=\"http:\/\/www.cosmoespai.com\/cat\/2020\/09\/09\/perque-la-lluna-nomes-ens-ensenya-una-cara\/\">Perqu\u00e8 la Lluna nom\u00e9s ens ensenya una cara?<\/a><\/p>\n\n\n\n<p><strong>Entrades Populars:<\/strong><\/p>\n\n\n\n<p><a href=\"http:\/\/www.cosmoespai.com\/cat\/2020\/10\/22\/perque-a-lequador-no-hi-ha-huracans\/\">Perqu\u00e8 a l\u2019Equador no hi ha huracans?<\/a><\/p>\n\n\n\n<p><a href=\"http:\/\/www.cosmoespai.com\/cat\/2020\/10\/10\/quina-mida-i-forma-tindrien-els-extraterrestres\/\">Quina mida i forma tindrien els extraterrestres?<\/a><\/p>\n\n\n\n<p><a href=\"http:\/\/www.cosmoespai.com\/cat\/2020\/09\/03\/els-anells-de-saturn-la-seva-composicio-i-exploracio\/\">Els anells de Saturn, la seva composici\u00f3 i exploraci\u00f3.<\/a><\/p>\n\n\n\n<p><a href=\"http:\/\/www.cosmoespai.com\/cat\/2020\/08\/26\/la-cara-fosca-de-la-lluna-que-es-el-que-shi-amaga\/\">La cara fosca de la Lluna. Qu\u00e8 \u00e9s el que s\u2019hi amaga?<\/a><\/p>\n\n\n\n<p><strong>Entrades Recents:<\/strong><\/p>\n\n\n<ul class=\"wp-block-latest-posts__list is-grid columns-3 wp-block-latest-posts\"><li><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/www.cosmoespai.com\/cat\/com-viatjar-al-futur-sense-violar-les-lleis-de-la-fisica\/\">Com Viatjar al Futur Sense Violar les Lleis de la F\u00edsica<\/a><\/li>\n<li><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/www.cosmoespai.com\/cat\/que-es-la-gravetat\/\">Qu\u00e8 \u00e9s la gravetat?<\/a><\/li>\n<li><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/www.cosmoespai.com\/cat\/per-que-hi-ha-mes-materia-que-antimateria-a-lunivers\/\">Per qu\u00e8 hi ha m\u00e9s mat\u00e8ria que antimat\u00e8ria a l\u2019univers?<\/a><\/li>\n<li><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/www.cosmoespai.com\/cat\/que-es-lantimateria\/\">Qu\u00e8 \u00e9s l\u2019antimat\u00e8ria?<\/a><\/li>\n<li><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/www.cosmoespai.com\/cat\/per-que-els-centres-de-les-galaxies-contenen-forats-negres\/\">Per qu\u00e8 els centres de les gal\u00e0xies contenen forats negres?<\/a><\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>L\u2019univers es regeix per 4 forces fonamentals. Aquestes quatre forces fonamentals han estat descobertes per diferents f\u00edsics de diferents \u00e8poques. La gravetat Una d\u2019aquestes forces<span class=\"read-more-link\"><a class=\"read-more\" href=\"https:\/\/www.cosmoespai.com\/cat\/les-quatre-forces-fonamentals-de-lunivers\/\">Continuar llegint<\/a><\/span><\/p>\n","protected":false},"author":1,"featured_media":208,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":""},"categories":[46,6],"tags":[180,183,184,182,181,179,185,55],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2020\/11\/Forces_Univers.jpg?fit=720%2C405","jetpack_sharing_enabled":true,"jetpack_likes_enabled":true,"jetpack-related-posts":[{"id":959,"url":"https:\/\/www.cosmoespai.com\/cat\/que-es-la-gravetat\/","url_meta":{"origin":207,"position":0},"title":"Qu\u00e8 \u00e9s la gravetat?","author":"Ferran","date":"24 de juliol de 2023","format":false,"excerpt":"La gravetat \u00e9s una de les forces fonamentals de l\u2019univers. Fa que tornem a caure al terra quan saltem, i que n\u00favols de gas col\u00b7lapsin per formar estrelles. Durant segles la humanitat ha intentat entendre qu\u00e8 \u00e9s la gravetat. Malgrat aix\u00f2, no va ser fins que Isaac Newton va estudiar\u2026","rel":"","context":"A &quot;General&quot;","block_context":{"text":"General","link":"https:\/\/www.cosmoespai.com\/cat\/category\/general\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2023\/07\/QueEs_Gravetat.jpg?fit=720%2C405&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2023\/07\/QueEs_Gravetat.jpg?fit=720%2C405&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2023\/07\/QueEs_Gravetat.jpg?fit=720%2C405&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2023\/07\/QueEs_Gravetat.jpg?fit=720%2C405&resize=700%2C400 2x"},"classes":[]},{"id":511,"url":"https:\/\/www.cosmoespai.com\/cat\/que-son-els-neutrins-caracteristiques-abundancia-i-deteccio\/","url_meta":{"origin":207,"position":1},"title":"Qu\u00e8 s\u00f3n els neutrins? Caracter\u00edstiques, Abund\u00e0ncia i Detecci\u00f3","author":"Ferran","date":"10 de desembre de 2021","format":false,"excerpt":"Els neutrins s\u00f3n una part\u00edcula subat\u00f2mica fonamental, \u00e9s a dir, no es pot dividir en altres part\u00edcules. Un altre exemple de part\u00edcula fonamental \u00e9s l\u2019electr\u00f3. Els neutrins es van predir per primer cop al 1930, per\u00f2 no va ser fins al 1956 que es van descobrir experimentalment. Malgrat el seu\u2026","rel":"","context":"A &quot;M\u00f3n Subat\u00f2mic&quot;","block_context":{"text":"M\u00f3n Subat\u00f2mic","link":"https:\/\/www.cosmoespai.com\/cat\/category\/mon-subatomic\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2021\/12\/Neutrins.jpg?fit=720%2C405&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2021\/12\/Neutrins.jpg?fit=720%2C405&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2021\/12\/Neutrins.jpg?fit=720%2C405&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2021\/12\/Neutrins.jpg?fit=720%2C405&resize=700%2C400 2x"},"classes":[]},{"id":530,"url":"https:\/\/www.cosmoespai.com\/cat\/el-big-crunch-quan-tot-torni-al-comencament\/","url_meta":{"origin":207,"position":2},"title":"El Big Crunch: Quan tot torni al comen\u00e7ament","author":"Ferran","date":"7 de gener de 2022","format":false,"excerpt":"El Big Crunch, a l\u2019igual que el Big Freeze o el Big Rip, dels quals parlar\u00e9 en propers articles, \u00e9s una teoria que especula sobre com podria ser la mort de l\u2019univers. Tamb\u00e9 podr\u00edem dir que \u00e9s la teoria oposada al Big Bang. En qu\u00e8 consisteix la teoria? La teoria\u2026","rel":"","context":"A &quot;Univers&quot;","block_context":{"text":"Univers","link":"https:\/\/www.cosmoespai.com\/cat\/category\/univers\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2022\/01\/Big_Crunch.jpg?fit=720%2C405&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2022\/01\/Big_Crunch.jpg?fit=720%2C405&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2022\/01\/Big_Crunch.jpg?fit=720%2C405&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2022\/01\/Big_Crunch.jpg?fit=720%2C405&resize=700%2C400 2x"},"classes":[]},{"id":540,"url":"https:\/\/www.cosmoespai.com\/cat\/el-big-freeze-la-mort-gelida-de-lunivers\/","url_meta":{"origin":207,"position":3},"title":"El Big Freeze: la mort g\u00e8lida de l\u2019univers","author":"Ferran","date":"21 de gener de 2022","format":false,"excerpt":"Al llarg del temps, els cient\u00edfics han especulat sobre com podria ser la mort de l\u2019univers. Amb els nostres coneixements actuals de l\u2019univers, hem desenvolupat diverses teories que expliquen com morir\u00e0 el nostre univers. Una d\u2019elles \u00e9s l\u2019anomenat Big Freeze, que diu que el nostre univers no parar\u00e0 mai d\u2019expandir-se.\u2026","rel":"","context":"A &quot;General&quot;","block_context":{"text":"General","link":"https:\/\/www.cosmoespai.com\/cat\/category\/general\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2022\/01\/Big_Freeze.jpg?fit=720%2C405&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2022\/01\/Big_Freeze.jpg?fit=720%2C405&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2022\/01\/Big_Freeze.jpg?fit=720%2C405&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2022\/01\/Big_Freeze.jpg?fit=720%2C405&resize=700%2C400 2x"},"classes":[]},{"id":944,"url":"https:\/\/www.cosmoespai.com\/cat\/que-es-lantimateria\/","url_meta":{"origin":207,"position":4},"title":"Qu\u00e8 \u00e9s l\u2019antimat\u00e8ria?","author":"Ferran","date":"25 de juny de 2023","format":false,"excerpt":"Les part\u00edcules de mat\u00e8ria constitueixen gaireb\u00e9 tot el que veiem a l\u2019univers. Els \u00e0toms estan formats per protons, electrons, neutrons, i una gran quantitat de part\u00edcules m\u00e9s petites. Encara que sembli una cosa treta de la ci\u00e8ncia ficci\u00f3, l\u2019antimat\u00e8ria \u00e9s real, i, de fet, se\u2019n produeix cada dia a la\u2026","rel":"","context":"A &quot;General&quot;","block_context":{"text":"General","link":"https:\/\/www.cosmoespai.com\/cat\/category\/general\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2023\/06\/QueEs_Antimateria.jpg?fit=720%2C405&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2023\/06\/QueEs_Antimateria.jpg?fit=720%2C405&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2023\/06\/QueEs_Antimateria.jpg?fit=720%2C405&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2023\/06\/QueEs_Antimateria.jpg?fit=720%2C405&resize=700%2C400 2x"},"classes":[]},{"id":598,"url":"https:\/\/www.cosmoespai.com\/cat\/que-es-lantimateria-propietats-i-creacio\/","url_meta":{"origin":207,"position":5},"title":"Qu\u00e8 \u00e9s l\u2019antimat\u00e8ria? Propietats i Creaci\u00f3","author":"Ferran","date":"1 d'abril de 2022","format":false,"excerpt":"L\u2019antimat\u00e8ria ha creat una \u00e0mplia \u00e0rea d\u2019estudi per als f\u00edsics de part\u00edcules. Va ser un dels descobriments f\u00edsics m\u00e9s excitants del segle XX. Tot i que molta gent creu que aquest tipus de mat\u00e8ria \u00e9s cosa de ci\u00e8ncia-ficci\u00f3, cada dia es produeix antimat\u00e8ria a la Terra. No obstant, per entendre\u2026","rel":"","context":"A &quot;General&quot;","block_context":{"text":"General","link":"https:\/\/www.cosmoespai.com\/cat\/category\/general\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2022\/04\/Antimat\u00e8ria.jpg?fit=720%2C405&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2022\/04\/Antimat\u00e8ria.jpg?fit=720%2C405&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2022\/04\/Antimat\u00e8ria.jpg?fit=720%2C405&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2022\/04\/Antimat\u00e8ria.jpg?fit=720%2C405&resize=700%2C400 2x"},"classes":[]}],"_links":{"self":[{"href":"https:\/\/www.cosmoespai.com\/cat\/wp-json\/wp\/v2\/posts\/207"}],"collection":[{"href":"https:\/\/www.cosmoespai.com\/cat\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.cosmoespai.com\/cat\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.cosmoespai.com\/cat\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.cosmoespai.com\/cat\/wp-json\/wp\/v2\/comments?post=207"}],"version-history":[{"count":1,"href":"https:\/\/www.cosmoespai.com\/cat\/wp-json\/wp\/v2\/posts\/207\/revisions"}],"predecessor-version":[{"id":209,"href":"https:\/\/www.cosmoespai.com\/cat\/wp-json\/wp\/v2\/posts\/207\/revisions\/209"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.cosmoespai.com\/cat\/wp-json\/wp\/v2\/media\/208"}],"wp:attachment":[{"href":"https:\/\/www.cosmoespai.com\/cat\/wp-json\/wp\/v2\/media?parent=207"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.cosmoespai.com\/cat\/wp-json\/wp\/v2\/categories?post=207"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.cosmoespai.com\/cat\/wp-json\/wp\/v2\/tags?post=207"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}