…Using the fact that the change in momentum is equal to the impulse, we get ( t represents time), and by averaging over all directions of molecular motion, we get. In this case, VR is the virial of the force that the wall exerts on the molecules, and is called the external virial. In an ideal gas in which gas molecules move independently of each other, if the kinetic energy of the molecules is K , then pV = 2/3 × = RT , and so the relationship is VR = … *Some of the terminology that refers to "external virial" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…これに運動量の変化が力積に等しいことを用いると,となるから(tは時間を表す),分子運動のすべての方向について平均することにより,が得られる。このときのVRは壁が分子に及ぼす力のビリアルで,外部ビリアルと呼ばれる。気体分子が互いに独立に運動する理想気体では,分子の運動エネルギーをKとするとpV=2/3×=RTだから,VR=という関係になる。… ※「外部ビリアル」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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