…For example, the speed of an object is calculated by measuring both the distance traveled and the time it takes to move, then dividing the distance by the time. This method of calculating the desired measurement from two or more measurements is called indirect measurement. In contrast, the speed of an automobile can be determined by reading the electromotive force proportional to the rotation speed when a rotating generator is rotated in accordance with the rotation of the wheels. … *Some explanations of terms that mention "direct measurement" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…例えば物体の動く速度は,この物体の移動した距離とその移動に要した時間の両方を測って,距離を時間で割って求める。このように二つ以上の測定値から計算で所望の測定値を得る方法を間接測定indirect measurementという。これに対して,例えば自動車の速度は,車輪の回転に合わせて回転発電機をまわすと回転速度に比例した起電力が発生するので,その起電力を電圧計で読むことによって速度を知ることができる。… ※「direct measurement」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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