| 释义 |
Lorentzian, a. and n. Physics.|ləˈrɛntsɪən|
Also lorentzian.
[f. Lorentz n. + -ian1.]
A. adj. Of, pertaining to, or characteristic of Lorentz (see Lorentz n.), his theories, or the concepts arising out of his work; spec. designating a curve or function having the same form as that representing the intensity of a spectral emission line as a function of frequency in classical radiation theory.
1958Physical Rev. CXII. 1940/2 Δv is the half-width of the atomic resonance at half-maximum intensity, assuming a Lorentzian line shape. 1967Condon & Odishaw Handbk. Physics (ed. 2) viii. ix. 119/2 Homogeneous broadening yields Lorentzian line shapes whereas Gaussian line shapes occur when inhomogeneous broadening is involved. 1978Nature 31 Aug. 903/1 In all twitch and most slow fibre junctions at negative voltages the spectral density of the fluctuations could be adequately fitted with a Lorentzian function. 1988Ibid. 16 June 609/3 In the curve-fitting module, up to three peaks of different height, position, width and shape (gaussian, lorentzian or mixed) can be studied with various levels of noise superimposed. 1992S. P. Maran Astron. & Astrophysics Encycl. 194/2 Fabry–Perot filters..are stable within the dimensional stability of the plate spacing and refractive index of the cavity medium. The transmission function is approximately Lorentzian in shape.
B. n. A Lorentzian curve or function.
1973Physics Bull. Jan. 51/1 It is intended..to deal in particular with aspects of the interpretation of experimental data such as multiple scattering and the unfolding of lorentzians. 1988Nature 14 Apr. 661/2 Fitting the haloes by a gaussian or a lorentzian, we estimate a coupling range..which corresponds to the size of an insulin monomer or dimer. |