順時針方向
Sign in to saveAlso known as CW, clockwise, turn to right, dextrorotatory, sunwise
Two-dimensional rotation can occur in two possible directions, or senses of rotation. Clockwise motion (abbreviated CW) proceeds in the same direction as a clock's hands relative to the observer: from the top to the right, then down and then to the left, and back up to the top. The opposite sense of rotation or revolution is (in Commonwealth English) anticlockwise (ACW) or (in North American English) counterclockwise (CCW). Three-dimensional rotation can have similarly defined senses when considering the corresponding angular velocity vector.
Wikidata facts
- Instance of
- rotational direction
- Image
- Clockwise arrow.svg
Show 3 more facts
- opposite of
- anticlockwise direction
- facet of
- chirality
- Unicode character
- ↻
Sources (3)
via Wikidata · CC0
Article · 中文
以順時針方向運行指依從時針移動的方向運行（如右上圖），即可視為由右上方向下，然後轉向左，再回到上。數學上，在直角坐标系以方程式x = sin t 和 y = cos t 定義的圓形，隨着t值減少所代表的曲線就是依順時針方向繪畫。換一種說法，當一個物體不斷向右方移動所形成的軌跡，也是循着順時針方向移動。順時針的相反方向是逆時針方向。 一旋轉運動屬於順時針抑或逆時針，視乎觀察面的設定。例如，由北極正上方看下去，地球自轉屬於逆時針，但由南極正上方看下去，地球自轉則是順時針。
Abstract from DBpedia / Wikipedia · CC BY-SA