| 释义 |
polytrope Physics and Astr.|ˈpɒlɪtrəʊp|
[Back-formation from polytropic a., or a. G. polytrope in the same sense (R. Emden Gaskugeln (1907) i. i. 13).]
A polytropic body of gas (see polytropic a. 4).
1926A. S. Eddington Internal Constitution of Stars iv. 86 The polytrope n = 3, which is believed to correspond nearly to the actual conditions of the stars. 1939S. Chandrasekhar Introd. Study Stellar Struct. iv. 170 So far we have considered only complete polytropes. We shall now proceed to a consideration of composite polytropes, i.e., configurations which consist of different zones each characterized by a different value of the index n. 1975Nature 27 Mar. 295/1 The energy required to break up a star of mass m and radius R is..3/4(Gm2/R) for a polytrope of index n = 3½. |