Kepler's law


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Related to Kepler's law: Kepler's third law
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.Kepler's law - (astronomy) one of three empirical laws of planetary motion stated by Johannes Kepler
law of nature, law - a generalization that describes recurring facts or events in nature; "the laws of thermodynamics"
Kepler's first law - a law stating that the orbit of each planet is an ellipse with the sun at one focus of the ellipse
Kepler's second law, law of areas, law of equal areas - a law concerning the speed at which planets travel; a line connecting a planet to the sun will sweep out equal areas in equal times; "Kepler's second law means that a planet's orbital speed changes with its distance from the sun"
harmonic law, Kepler's third law - a law stating that the ratio of the square of the revolutionary period (in years) to the cube of the orbital axis (in astronomical units) is the same for all planets
astronomy, uranology - the branch of physics that studies celestial bodies and the universe as a whole
References in periodicals archive ?
According to Steven Balbus and Hantao Ji per the current August edition of the magazine Physics Today, one of the blemishes of this "helical MRI" is the fact that it only acts to destabilize rotational profiles that are relatively precipitous towards the periphery, which for now does not include rotation profiles obeying Kepler's law.
Only two of the Heath House trainer's possibles for the 2m2f handicap, Motivado (12-1 with the sponsor) and the long-absent Kepler's Law (16-1 and a market mover this week), are guaranteed a run given the 34-runner safety limit, but Samarkand and Repeater need just four and five to drop out, while Gassin Golf (20-1) needs nine.
From Kepler's law, calculation shows that for an orbit of 26 million years, the semimajor axis of Nemesis's orbit has to be 88,000 times that of the earth.
That's because Earth's seasons are determined by its tilt and not by its distance from the Sun, supporting German astronomer Johannes Kepler's Law according to which, "All planets in our solar system travel around the Sun in elliptical orbits.
Thus one can still use Kepler's law as in (2) (which generalizes Kepler's laws) instead of adding other perturbations from the nearby bodies to the equation of motion of the Earth.
Armageddon - in which a giant meteorite is on a collision course with Earth - could encourage youngsters to learn about Kepler's law on the motion of the planets.
Newton included time by generalizing Kepler's law of areas; the time elapsed when traversing a given arc of its orbit is proportional to the area of the sector swept out by a radius from the center point to the orbiting body.
Chapter 2 provides an elementary study of satellite orbital theory, including a review of Kepler's Law, which is necessary to describe the position of satellites in space.
The race-fit Motivado was to the fore, but Kepler's Law (Luke Morris) was not disgraced and both appear to give Heath House a strong hand for next weekend.
Chapter 2 treats orbital considerations for space-based radar, beginning with Kepler's law, using orbit equations, time of flight, gravitational perturbations, launch window considerations and continuous global coverage.
Sir Mark Prescott, trainer of Motivado, Mohedian Lady, Kepler's Law, Samarkand, Repeater, Gassin Golf and Awesome Pearl "Motivado would be an intended runner if he's not sold before, and there are various negotiations going on.
At this time, Mercury moves most slowly (according to Kepler's law of equal areas in equal times), and the retrograde loops are narrowest.