| 释义 |
self-graviˈtation Astr.
[self- 3 a.]
The gravitational forces acting among the components of a massive body.
1962K. H. Prendergast in L. Woltjer Distribution & Motion Interstellar Matter 233 In our own galaxy, if you consider the terms in the equations of motion, other than the gravitational field of all the matter, then there are three: the random velocities, some sort of ordered magnetic field, and the self-gravitation of the gas. 1968R. A. Lyttleton Mysteries Solar Syst. i. 36 Self-gravitation within the disk can far exceed the solar disruptive effect. 1977Dædalus Summer 36 Roughly speaking we can attribute this change from Newtonian theory to the greater self-gravitation which matter possesses according to general relativity.
Hence self-graviˈtational a.; self-ˈgravitating ppl. a., influenced by self-gravitation; self-ˈgravity, self-gravitation.
1962P. O. Lindblad in L. Woltjer Distribution & Motion Interstellar Matter 223 A massive ring in a central force field..can carry two different kinds of bisymmetrical waves by self-gravitational action. 1962G. B. Field in Ibid. 318 Is the system a self-gravitating one in the sense that the gas acts on the gas, or is it not? 1972Sci. Amer. Apr. 43/2 The restoring forces that limit the height of the tides are due to the planet's elasticity and self⁓gravity. 1976Nature 11 Nov. 114/1 Ultimately, self⁓gravity must drive the enormous contractions which convert diffuse gas into new stars. 1979New Scientist 3 May 424/2 A self-gravitating mass of gas, cohering under its self-attraction, would adopt spherical symmetry. |
