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Kepler's third Law
(harmonic law)
subjectfact 
Kepler's third Lawhas equation P2 = 4π2 a3 / [G (m1 + m2)]has source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:33:55.0
has synonym harmonic lawhas source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:33:55.0
has definition The square of the period is proportional to the cube of the distance.has source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:33:55.0
is an instance of Kepler's Law2001-09-27 09:33:55.0
Kepler's Lawhas discoverer Johannes Kepler2001-09-27 09:33:55.0
gravity lawhas domain gravity2001-09-27 09:33:55.0
theoryhas validity correct or incorrect with caveats2001-09-27 09:33:53.0
has author or reasearch group2001-09-27 09:33:53.0
has date or a range of dates for which the theory was active2001-09-27 09:33:53.0