Encara no tenim significats per a "describe an ellipse".
1The Sun is at the center (or, more properly speaking, at the focus, for the planets describe an ellipse) of this system, and controls them.
2Suppose it is required to describe an ellipse the longer diameter of which is 8 inches, and the distance between the foci 5 inches.
3Every moving body circulating regularly around another, describes an ellipse.
4The sun described an ellipse, rising a little east of north and setting a little west of north.
5This inference is so far correct, but the very common impression that the middle point of the rod always describes an ellipse is quite erroneous.
Aquesta col·locació està formada per: