{"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\/pl\/what_is_gravity\/","title":{"rendered":"Czym jest grawitacja?"},"content":{"rendered":"
\n

Czy zastanawia\u0142e\u015b si\u0119 kiedy\u015b, dlaczego zawsze l\u0105dujesz na ziemi z hukiem, niezale\u017cnie od tego, jak wysoko skaczesz? Ludzie zadawali to samo pytanie ju\u017c 340 lat temu. Wtedy brytyjski naukowiec o nazwisku Isaac Newton odkry\u0142 si\u0142\u0119 grawitacji.<\/p>\n<\/div>\n

128125 Opowie\u015b\u0107 ta opowiada o tym, jak Izaak przebywa\u0142 w swoim ogrodzie, gdy na jego g\u0142ow\u0119 spad\u0142o jab\u0142ko. Gdy pociera\u0142 sobie siniak, zacz\u0105\u0142 si\u0119 zastanawia\u0107, dlaczego jab\u0142ko uderzy\u0142o w\u0142a\u015bnie w niego, a nie polecia\u0142o w g\u00f3r\u0119.<\/p>\n

Newton doszed\u0142 do wniosku, \u017ce musi istnie\u0107 jaka\u015b niewidzialna si\u0142a, kt\u00f3ra przyci\u0105ga jab\u0142ko w kierunku Ziemi. Si\u0142\u0119 t\u0119 nazwa\u0142 \u201cgrawitacj\u0105\u201d \u2013 od \u0142aci\u0144skiego s\u0142owa \u201cgravitas\u201d, oznaczaj\u0105cego \u201cci\u0119\u017car\u201d.<\/p>\n

\"Newton's
Armaty Newtona<\/figcaption><\/figure>\n

Newton zda\u0142 sobie spraw\u0119, \u017ce ka\u017cda rzecz we Wszech\u015bwiecie przyci\u0105ga ka\u017cd\u0105 inn\u0105 rzecz we Wszech\u015bwiecie. Nawet jab\u0142ko wywiera niewielki wp\u0142yw na wszystko, co znajduje si\u0119 wok\u00f3\u0142 niego.<\/p>\n

To w\u0142a\u015bnie grawitacja utrzymuje Ksi\u0119\u017cyc na orbicie wok\u00f3\u0142 Ziemi i to w\u0142a\u015bnie grawitacja pozwala S\u0142o\u0144cu utrzyma\u0107 swoj\u0105 rodzin\u0119 planet. Si\u0142a przyci\u0105gania S\u0142o\u0144ca i Ksi\u0119\u017cyca powoduje r\u00f3wnie\u017c p\u0142ywy oceaniczne na Ziemi.<\/p>\n

Si\u0142a grawitacji zale\u017cy jednak od wielko\u015bci i g\u0119sto\u015bci obiektu \u2013 od tego, co naukowcy nazywaj\u0105 jego \u201cmas\u0105\u201d. Si\u0142a grawitacyjna tego male\u0144kiego jab\u0142ka jest zbyt s\u0142aba, by pokona\u0107 przyci\u0105ganie ogromnej Ziemi, wi\u0119c jab\u0142ko spada w kierunku \u015brodka planety.<\/p>\n

Si\u0142a grawitacyjna wywierana przez dany obiekt maleje wraz z odleg\u0142o\u015bci\u0105 od niego. Wspinacz znajduj\u0105cy si\u0119 na szczycie Mount Everestu wa\u017cy nieco mniej ni\u017c na poziomie morza. Je\u015bli statek kosmiczny oddali si\u0119 od Ziemi na wystarczaj\u0105c\u0105 odleg\u0142o\u015b\u0107, w ko\u0144cu ca\u0142kowicie uwolni si\u0119 od przyci\u0105gania tej planety.<\/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\/pl\/wp-json\/wp\/v2\/posts\/35","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/pl\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/pl\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/pl\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/pl\/wp-json\/wp\/v2\/comments?post=35"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/pl\/wp-json\/wp\/v2\/posts\/35\/revisions"}],"predecessor-version":[{"id":4271,"href":"https:\/\/kids.esa.int\/pl\/wp-json\/wp\/v2\/posts\/35\/revisions\/4271"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/pl\/wp-json\/wp\/v2\/media?parent=35"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/pl\/wp-json\/wp\/v2\/categories?post=35"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/pl\/wp-json\/wp\/v2\/tags?post=35"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/pl\/wp-json\/wp\/v2\/panel?post=35"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/pl\/wp-json\/wp\/v2\/language?post=35"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/pl\/wp-json\/wp\/v2\/age?post=35"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/pl\/wp-json\/wp\/v2\/duration?post=35"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/pl\/wp-json\/wp\/v2\/resource_type?post=35"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/pl\/wp-json\/wp\/v2\/audience?post=35"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/pl\/wp-json\/wp\/v2\/wf_post_folders?post=35"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}