…velocity as a vector is represented by an arrow whose length is proportional to the speed and whose direction corresponds to the direction of the velocity. If the arrowhead is fixed at a fixed point and an arrow is drawn showing the velocity at each moment, the change in velocity is represented by the movement of the tip of the arrow. The curve that the tip of the arrow traces over time is called a hodograph (hodos means path in Greek), and the "velocity" (vector including direction) of the tip of the arrow moving on the hodograph is the acceleration. … *Some of the terminology explanations that mention "hodograph" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…ベクトルとしての速度を,長さが速さに比例し方向が速度の方向と一致する矢印で表し,矢尻を定点に固定して時々刻々の速度の矢印を描くと,速度の変化は矢印の先端の動きで表される。矢印の先端が時間の経過とともに描く曲線をホドグラフ(hodograph。hodosはギリシア語で道の意)と呼び,ホドグラフ上を矢の先端が動く〈速度〉(方向も含めたベクトル)が加速度である。… ※「hodograph」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 |
<<: Hodonin (English spelling)
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