| 21. | The gravitational field gradient is given by the divergence of the gravitational field.
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| 22. | :As in electromagnetism, the gravitational field depends on a retarded potential.
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| 23. | It establishes Minkowski space as a stable ground state of the gravitational field.
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| 24. | Those shifts in mass result in measurable differences in the planet's gravitational field.
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| 25. | The gravitational field of the earth is neither perfect nor uniform.
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| 26. | Then there is some gravitational field described by a metric g ( r ).
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| 27. | Earth has a series of layers of equal potential energy within its gravitational field.
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| 28. | "' Taylor have studied stronger gravitational fields in binary pulsars.
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| 29. | The gravitational field is determined by the distribution of masses.
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| 30. | Natural convection can only occur, therefore, in a gravitational field.
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