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gravitational theory

   Also found in: Medical, Legal, Encyclopedia, Wikipedia 0.06 sec.
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.gravitational theory - (physics) the theory that any two particles of matter attract one another with a force directly proportional to the product of their masses and inversely proportional to the square of the distance between them
law of gravitation, Newton's law of gravitation - (physics) the law that states any two bodies attract each other with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between them
scientific theory - a theory that explains scientific observations; "scientific theories must be falsifiable"
natural philosophy, physics - the science of matter and energy and their interactions; "his favorite subject was physics"


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That becomes tricky because gravitational theory dictates that the altitude isn't measured relative to average sea level, but to the geoid, a hypothetical surface that approximates the shape and size of Earth.
In this collaborative program, involving NIST, JPL, the University of Colorado, and the Harvard-Smithsonian Center for Astrophysics, a laser-cooled cesium clock will be put aboard the International Space Station in 2005 to perform certain tests on gravitational theory and to improve upon the realization of the second.
Assumed to be black, the Egyptians are credited with achievements ranging from "experimental aeronautics" to "a possible understanding of quantum physics and gravitational theory.
 
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