| http://www.w3.org/ns/prov#value | - The law of motion ???force equals mass times acceleration???, does not consist only of a statement about material systems, not even if, according to Newton???s fundamental law of astronomy, the force is expressed at a distance, i.e. by quantities whose ???real definition??? [definitio realis, a definition in terms of the object???s distinguishing properties] can be based on measurements involving
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