| 单词 | stationary state |
| 释义 | > as lemmasstationary state stationary state n. an unchanging or unvarying state, a steady state; spec. (a) Economics a period in which economic growth does not occur in an economy (city, region, country, etc.) because all relevant economic variables (consumption, productivity, investment, etc.) are constant; (b) Physics any of the stable orbits of the electrons in the Bohr model of the atom; a quantum state with a definite energy. ΘΚΠ the world > matter > physics > quantum theory > [noun] > stable orbit stationary state1913 1775 J. Anderson Ess. Agric. vi. 227 Now, if the plant be always cut when it approaches towards that stationary state, it will be always in the state of vigorous vegetation. 1776 A. Smith Inq. Wealth of Nations I. i. viii. 99 The condition of the labouring poor..is hard in the stationary, and miserable in the declining state. View more context for this quotation 1848 J. S. Mill Princ. Polit. Econ. II. iv. vi. §1 306 At the end of what they term the progressive state lies the stationary state..all progress in wealth is but a postponement of this. 1872 W. Bagehot Physics & Polit. (1876) 211 As a rule a stationary state is by far the most frequent condition of man. 1913 N. Bohr in London, Edinb. & Dublin Philos. Mag. 6th Ser. 26 7 The dynamical equilibrium of the systems in the stationary states can be discussed by help of the ordinary mechanics, while the passing of the systems between different stationary states cannot be treated on that basis. 1932 Jrnl. Chem. Soc. 359 Each spectral term..may be taken to represent, for the corresponding stationary state of the atom, the work necessary to remove the electron to an infinite distance from the proton. 1986 Oxf. Econ. Papers 38 190 Sooner or later all avenues will inevitably lead to the long run equilibrium of the Stationary State. 2006 F. Wilczek Fantastic Realities 308 Transitions between these stationary states were supposed to occur only discontinuously, with the release of all the energy into light. < as lemmas |
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