"गुरुत्वाकर्षण" च्या विविध आवृत्यांमधील फरक

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[[वस्तुमान]] असलेल्या कोणत्याही दोन वस्तूंच्या एकमेकांकडे आकर्षिल्या जाण्याच्या प्रवृत्तीला '''गुरुत्वाकर्षण''' असे म्हणतात. वजन म्हणजे जमिनीच्या दिशेने असणाऱ्या गुरुत्वाकर्षणामुळे मिळणारे [[त्वरण]] आणि [[वस्तुमान]] यांच्या गुणाकाराएवढे बल. या क्षेत्रात अफाट संशोधन होऊनही दूरदूर ठेवलेल्या दोन वस्तूंमध्ये गुरुत्वाकर्षण का असते हे अजूनही पूर्णपणे समजलेले नाही.

 

 

 

{{quote|"On the contrary, if that were the case, the earth would not vie in keeping an even and uniform pace with the minutes of heavenही, the [[prana]]s of the times. [...] All heavy things are attracted towards the center of the earth. [...] The earth on all its sides is the same; all people on earth stand upright, and all heavy things fall down to the earth by a law of nature, for it is the nature of the earth to attract and to keep things, as it is the nature of water to flow, that of fire to burn, and that of wind to set in motion… The earth is the only low thing, and seeds always return to it, in whatever direction you may throw them away, and never rise upwards from the earth."<ref>Brahmagupta, ''Brahmasphutasiddhanta'' (628) ([[cf.]] [[al-Biruni]] (1030), ''Indica'')</ref>}}