Phase shift is any change that occurs in the phase of one quantity, or in the phase difference between two or more quantities.
is sometimes referred to as a phase shift or phase offset, because it represents a "shift" from zero phase. But a change in is also referred to as a phase shift.
For infinitely long sinusoids, a change in is the same as a shift in time, such as a time delay. If is delayed (time-shifted) by of its cycle, it becomes:
whose "phase" is now . It has been shifted by radians.
Read more about this topic: Phase (waves)
Famous quotes containing the words phase and/or shift:
“I had let preadolescence creep up on me without paying much attentionand I seriously underestimated this insidious phase of child development. You hear about it, but youre not a true believer until it jumps out at you in the shape of your own, until recently quite companionable child.”
—Susan Ferraro (20th century)
“They shift coffee-houses and chocolate-houses from hour to hour, to get over the insupportable labour of doing nothing.”
—Richard Steele (16721729)