Kepler's laws en · NOUN
Etymology
For Johannes Kepler, German mathematician and astronomer.
Meanings
- (plural, plural-normally) The three laws of planetary motion discovered by Kepler in the early 17th century, stating that (i) the orbit of a planet is an ellipse with the Sun at one of the two foci, (ii) a line segment joining a planet and the Sun sweeps out equal areas during equal intervals of time, and (iii) the square of the orbital period of a planet is proportional to the cube of the semi-major axis of its orbit.
Forms
| Spelling | Features | Labels | Source |
|---|---|---|---|
| Kepler's law | Number=Sing | lexicographic |