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2006-12-05 00:02:20 · 7 answers · asked by Alexander_Brave_Heart 1 in Science & Mathematics Physics

7 answers

Since the time of the Greek philosopher Aristotle in the 4th century BC, there have been many attempts to understand and explain gravity. Aristotle believed that there was no effect without a cause, and therefore no motion without a force. He hypothesized that everything tried to move towards their proper place in the crystalline spheres of the heavens, and that physical bodies fell toward the center of the Earth in proportion to their weight.

Another early explanation was that of the Indian astronomer Brahmagupta who, in his Brahmasphuta Siddhanta (628), responded to critics of the heliocentric system of Aryabhata (476-550) stating that "all heavy things are attracted towards the center of the earth" and that "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."

Modern work on gravitational theory began with the work of Galileo Galilei in the late 16th century and early 17th century. In his famous experiment dropping balls at the Tower of Pisa and later with careful measurements of balls rolling down inclines, Galileo showed that gravitation accelerates all objects at the same rate. This was a major departure from Aristotle's belief that heavier objects are accelerated faster. (Galileo correctly postulated air resistance as the reason that lighter objects appear to fall more slowly.) Galileo's work set the stage for the formulation of Newton's theory of gravity.

Sir Isaac Newton was the first person to describe grative as a force in 1687. In his own words, "I deduced that the forces which keep the planets in their orbs must be reciprocally as the squares of their distances from the centers about which they revolve; and thereby compared the force requisite to keep the Moon in her orb with the force of gravity at the surface of the Earth; and found them answer pretty nearly."

2006-12-05 00:07:17 · answer #1 · answered by djessellis 4 · 1 0

As each body has stated, gravity change into got here upon with the aid of Isaac Newton. before Newton, each thing floated in mid-air, and cattle had to be tethered of their fields or they could waft away into area. thankfully, Newton got here upon gravity and each thing plunked down onto Earth and it grew to change into a possibility to keep beer in glasses without it drifting away (that is why German beer steins had those little caps on them - they retained the caps out of a experience of custom even at the same time as Newton's gravity got here into result). at present, there is substantial rigidity to repeal gravity with a view to make it a lot less annoying to launch satellites so human beings can watch get admission to Hollywood 24 hours an afternoon like God meant. yet another foyer needs to diminish the gravity from 9.8 meters in line with second to a extra useful 5.5 meters in line with second. this can scale decrease back gas intake global, and make basketball extra exciting, yet might want to nonetheless keep a range of of the cattle on the floor. both that or gravity is a actual resources of the universe that has been in result seeing that creation/large Bang, and Newton change into purely someone who managed to formulate a plausible and testable hypothesis that modeled how the observable phenomenon of gravity labored. A kind that has (extra or a lot less) stood as a lot as medical scrutiny, even if it has actual been changed and revised through the years. curiously adequate, there is completely a lot less actual evidence assisting the idea of gravity than there is for the idea of evolution, and yet no one ever talks about education 'sensible falling' in school rooms.

2016-11-23 17:50:48 · answer #2 · answered by Anonymous · 0 0

Galileo is credited with discovering it. Newton is credited with defining it, Einstien is credited with revising it with a higher level of understanding

2006-12-05 00:08:00 · answer #3 · answered by SteveA8 6 · 1 0

Albert Einstien e=mc2

2006-12-05 00:11:23 · answer #4 · answered by Anonymous · 0 1

Jesus.He created it and he broke the law of gravity by ascending into heaven.

2006-12-05 00:11:32 · answer #5 · answered by Anonymous · 0 1

The first person that ever fell down.

2006-12-05 00:10:47 · answer #6 · answered by ? 6 · 1 1

newton..?

2006-12-05 00:42:24 · answer #7 · answered by Jojo 2 · 0 1

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