problems in a number of different sciences. Hence, gravity, interpreted as an ``innate'' attraction between every pair of particles of matter, was considered an occult quality. Kuhn wrote that the search for a mechanical explanation of gravity was one of the most challenging tasks taken by those physicists whom accepted Newton's ideas. The scientists were in a slight bind: they were unable to ``practice'' science without Newton's paradigm, nor find a mechanical explanation for Newton's gravity. `` scientists gradually accepted the vi
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