| 释义 |
Lissajous|ˈlɪsæʒuː|
The name of Jules Antoine Lissajous (1822–80), French physicist, used attrib. and in the possessive to designate the plane figures (mostly crossed loops and simple curves) traced by a point executing two independent simple harmonic motions at right angles to one another and with frequencies in a simple numerical ratio (described by Lissajous in Compt. Rend. (1855) XLI. 814).
1877Rayleigh Theory of Sound I. p. vii, Lissajous' Figures. 1902Encycl. Brit. XXV. 50/1 If both forks vibrate, an observer looking through the microscope sees the bright point describing Lissajous figures. 1939Brit. Jrnl. Psychol. Oct. 129 The frequency of the tones employed..is checked by obtaining a Lissajous's figure against a constant frequency source applied to the other deflectors of the cathode-ray tube. 1943Electronic Engin. XVI. 170 Two measuring techniques for the Lissajous' figures produced on the oscilloscope screen are described. 1973Sci. Amer. Aug. 76/2 The two tones were next matched precisely on a cathode ray oscilloscope by tuning the generated tone until a clear Lissajous figure with a ratio of 1:1 appeared repeatedly on the screen. |
