| 释义 |
phase shift
phase shiftn. The displacement of one periodic waveform with respect to another of the same frequency, especially the difference between the input and output of a signal-processing device, such as an electronic amplifier or filter, caused by the processing of the signal. Phase shift is measured as the angle between two points on a circle representing the progress of the wave through its cycle.Translations
phase shift
phase shift[′fāz ‚shift] (electronics) The phase angle between the input and output signals of a network or system. (physics) A change in the phase of a periodic quantity. Also known as phase change. A change in the phase angle between two periodic quantities. (quantum mechanics) For a partial wave of a particle scattered by a spherically symmetric potential, the phase shift is the difference between the phase of the wave function far from the scatterer and the corresponding phase of a free particle. phase shift
phase shiftin nuclear magnetic resonance, the change in phase caused by movement of the spins, which can be used to show fluid flow.phase shift An alteration in the time relationship between the peaks (or troughs) of two different periodic functions. Thus, two circadian rhythms may suffer a phase shift as in jet lag. |