This consists of two books, and may be called the foundation of theoretical mechanics, for the previous contributions of Aristotle were comparatively vague and unscientific. In the first book there are fifteen propositions, with seven postulates; and demonstrations are given, much the same as those still employed, of the centres of gravity (I) of any two weights, (2) of any parallelogram, (3) of any triangle, (4) of any trapezium. [Please select]
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"She disappeared, and I immediately ceased my demonstrations." [Please select]
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It was succeeded by the most frantic and angry demonstrations of vengeance. [Please select]
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Driesbach had to strike him several times, to keep him from making too enthusiastic demonstrations. [Please select]
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These demonstrations of a conciliatory temper were however mere temporising. [Please select]
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In Rome demonstrations against Germany had become frequent and violent. [Please select]
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Even for the demonstrations attempted for undergraduate students, good and cheap apparatus is still lacking. [Please select]
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