| 释义 |
Huygens|ˈhaɪgənz|
Also (erron.) Huyghens.
The name of Christiaan Huygens (see Huyghenian a.), used, chiefly in the possessive, to designate inventions, principles, etc., devised or enunciated by him, as Huygens' construction, the geometrical construction for finding the position of a wave front by using Huygens' principle; Huygens' eyepiece, a Huygenian eyepiece (see Huyghenian a.); Huygens' principle, a principle of wave propagation, according to which each point on a wave front may be regarded as a source of new secondary waves, and the resultant effect of all these waves constitutes the propagation of the wave front, their envelope at a later time representing a new position of it.
[1835Rep. Brit. Assoc. Adv. Sci. 1834 308 The composition of the grand, or primary wave, by the union of the several secondary or partial waves, in this demonstration, has been denominated the principle of Huygens.] 1840Phil. Mag. XVII. 243 (heading) On the application of Huyghens's principle in physical optics. 1899W. Watson Text-bk. Physics iii. i. 353 The construction for finding the position..of the wave-front, at a time t by means of the tangent to a series of circles, the radius of each of which is equal to the space passed over by the wave in a time t, is due to Huyghens, and is known as Huyghens's construction for the wave-front. 1900J. C. P. Aldous Elem. Course Physics x. 577 The chief negative eye-piece is Huyghens' eye-piece. 1957Encycl. Brit. XV. 439/1 The Huygens eyepiece..is the most common type used with the microscope. 1959Born & Wolf Princ. Optics viii. 370 Fresnel was able to account for diffraction by supplementing Huygens' construction with the postulate that the secondary wavelets mutually interfere. 1970M. V. Klein Optics i. 20 To follow the propagation of the optical disturbance..we have, in theory, only to make repeated applications of Huygens' principle. Ibid. 21 The Huygens construction. |