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ScienceAAAS publishes six respected peer-reviewed journals. ^ a b In his investigation of the law of falling bodies , Galileo (1638) serves as instance for scientific investigation: Two New Sciences “A chunk of picket moulding or scantling, about 12 cubits lengthy, half a cubit broad, and three finger-breadths thick, was taken; on its edge was reduce a channel a bit of multiple finger in breadth; having made this groove very straight, clean, and polished, and having lined it with parchment, additionally as easy and polished as doable, we rolled along it a hard, easy, and really spherical bronze ball.

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