{"id":35,"date":"2005-06-30T09:17:00","date_gmt":"2005-06-30T07:17:00","guid":{"rendered":"https:\/\/kids.esa.int\/what_is_gravity\/"},"modified":"2026-10-08T00:23:19","modified_gmt":"2026-10-07T22:23:19","slug":"what_is_gravity","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/hu\/what_is_gravity\/","title":{"rendered":"Mi az a gravit\u00e1ci\u00f3?"},"content":{"rendered":"
\n

Gondolkodt\u00e1l m\u00e1r azon, hogy mi\u00e9rt esel mindig olyan er\u0151sen a f\u00f6ldre, f\u00fcggetlen\u00fcl att\u00f3l, milyen magasra ugrasz? 340 \u00e9vvel ezel\u0151tt is ugyanezt a k\u00e9rd\u00e9st tett\u00e9k fel az emberek. Akkor egy Isaac Newton nev\u0171 brit tud\u00f3s fedezte fel a gravit\u00e1ci\u00f3s er\u0151t.<\/p>\n<\/div>\n

128125 A t\u00f6rt\u00e9net arr\u00f3l sz\u00f3l, hogy Isaac a kertj\u00e9ben tart\u00f3zkodott, amikor egy alma a fej\u00e9re esett. Mik\u00f6zben d\u00f6rzs\u00f6lgette a z\u00faz\u00f3d\u00e1st, elgondolkodott azon, hogy mi\u00e9rt \u00e9ppen \u0151t tal\u00e1lta el az alma, \u00e9s mi\u00e9rt nem rep\u00fclt ink\u00e1bb felfel\u00e9.<\/p>\n

Newton arra a gondolatra jutott, hogy valamilyen l\u00e1thatatlan er\u0151 vonzza az alm\u00e1t a F\u00f6ld fel\u00e9. Ezt az er\u0151t \u201cgravit\u00e1ci\u00f3nak\u201d nevezte el \u2013 a latin \u201cgravitas\u201d sz\u00f3b\u00f3l, amelynek jelent\u00e9se \u201cs\u00faly\u201d.<\/p>\n

\"Newton's
Newton \u00e1gy\u00faja<\/figcaption><\/figure>\n

Newton r\u00e1j\u00f6tt, hogy az Univerzumban minden t\u00e1rgy vonzza az Univerzumban l\u00e9v\u0151 \u00f6sszes t\u00f6bbi t\u00e1rgyat. M\u00e9g egy alma is enyh\u00e9n vonzza a k\u00f6r\u00fcl\u00f6tte l\u00e9v\u0151 \u00f6sszes t\u00e1rgyat.<\/p>\n

A gravit\u00e1ci\u00f3 tartja a Holdat a F\u00f6ld k\u00f6r\u00fcli p\u00e1ly\u00e1n, \u00e9s a gravit\u00e1ci\u00f3 teszi lehet\u0151v\u00e9, hogy a Nap mag\u00e1hoz vonzza bolyg\u00f3rendszer\u00e9t. A Nap \u00e9s a Hold vonz\u00e1sa okozza a F\u00f6ld \u00f3ce\u00e1njainak \u00e1rap\u00e1ly\u00e1t is.<\/p>\n

A gravit\u00e1ci\u00f3 er\u0151ss\u00e9ge azonban a t\u00e1rgy m\u00e9ret\u00e9t\u0151l \u00e9s s\u0171r\u0171s\u00e9g\u00e9t\u0151l f\u00fcgg \u2013 amit a tud\u00f3sok \u201ct\u00f6megnek\u201d neveznek. A pici alma gravit\u00e1ci\u00f3ja t\u00fal gyenge ahhoz, hogy legy\u0151zze a hatalmas F\u00f6ld vonz\u00e1s\u00e1t, ez\u00e9rt a bolyg\u00f3 k\u00f6z\u00e9ppontja fel\u00e9 zuhan.<\/p>\n

Egy t\u00e1rgy gravit\u00e1ci\u00f3s vonz\u00e1sa a t\u00e1rgyt\u00f3l val\u00f3 t\u00e1vols\u00e1g n\u00f6veked\u00e9s\u00e9vel cs\u00f6kken. Az Everest cs\u00facs\u00e1n tart\u00f3zkod\u00f3 hegym\u00e1sz\u00f3 s\u00falya valamivel kisebb, mint a tengerszint felett. Ha egy \u0171rhaj\u00f3 el\u00e9g messzire t\u00e1volodik a F\u00f6ldt\u0151l, v\u00e9g\u00fcl teljesen kiszabadul a bolyg\u00f3 gravit\u00e1ci\u00f3s vonz\u00e1s\u00e1b\u00f3l.<\/p>","protected":false},"excerpt":{"rendered":"

Have you ever wondered why you always fall back to the ground with a bump, no matter how high you jump? People were asking the same question 340 years ago. […]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"esa_banner_image":"https:\/\/www.esa.int\/var\/esa\/storage\/images\/esa_multimedia\/images\/2002\/01\/sir_isaac_newton_1642-17272\/17864713-3-eng-GB\/Sir_Isaac_Newton_1642-1727.jpg","esa_banner_description":"Sir Isaac Newton, 1642-1727","esa_banner_credit":"Isaac Newton Institute for Mathematical Studies","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2002\/01\/Sir_Isaac_Newton_1642-17272","esa_external_url":"","esa_external_new_window":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":true},"categories":[10,11,19],"tags":[2],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-35","post","type-post","status-publish","format-standard","hentry","category-learn","category-our-universe","category-story-of-the-universe","tag-background-article"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/posts\/35","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/comments?post=35"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/posts\/35\/revisions"}],"predecessor-version":[{"id":4271,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/posts\/35\/revisions\/4271"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/media?parent=35"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/categories?post=35"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/tags?post=35"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/panel?post=35"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/language?post=35"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/age?post=35"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/duration?post=35"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/resource_type?post=35"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/audience?post=35"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/wf_post_folders?post=35"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}