quantitas materie (English spelling) quantitasmaterie

Japanese: quantitas materie(英語表記)quantitasmaterie
quantitas materie (English spelling) quantitasmaterie

…In dynamics, which examines the motion of an object, mass is the most fundamental property of an object, along with its position. The definition is given at the beginning of Newton's Principia, the founder of mechanics, as "Definition I: Quantitas materie is the measure of a substance obtained by multiplying its density and size (volume)." However, since there is no definition of density, it is unclear what this means. L. Euler, who organized Newton's ideas and expressed mechanics in its present-day form using analysis, also clarified the definition of mass to the current one. …

*Some of the terminology that mentions "quantitas materie" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…物体の運動を調べる動力学において,位置と並んで物体の性質としてもっとも基本的な量が質量である。力学の創始者ニュートンの《プリンキピア》の冒頭に,〈定義I:物質量quantitas materieとは物質の密度と大きさ(体積)をかけて得られる物質の測度である〉としてその定義が述べられているが,密度の定義がないのでこれでは何のことかわからない。ニュートンの考えを整理し,解析学を使って今日の形に力学を表現したL.オイラーが質量の定義も現在のものに明確化した。…

※「quantitas materie」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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