13.1: Utangulizi wa Gravitation
- Page ID
- 176679
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Katika sura hii, tunasoma asili ya nguvu ya mvuto kwa vitu vidogo kama sisi wenyewe na kwa mifumo kama kubwa kama galaxi nzima. Tunaonyesha jinsi nguvu ya mvuto inavyoathiri vitu duniani na mwendo wa Ulimwengu wenyewe. Mvuto ni nguvu ya kwanza kuhesabiwa kama nguvu ya action-katika-umbali, yaani, vitu vinajitahidi nguvu ya mvuto kwa kila mmoja bila kuwasiliana kimwili na nguvu hiyo inaanguka kwa sifuri tu kwa umbali usio na kipimo. Dunia ina nguvu ya mvuto juu yenu, lakini vivyo hivyo Jua letu, galaxi ya Milky Way, na mabilioni ya galaxi, kama yale yaliyoonyeshwa hapo juu, ambayo ni mbali sana kwamba hatuwezi kuziona kwa macho ya uchi.