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Aflash cut, also called aflash cutover, is an immediate change in a complex system, with no phase-in period.
In theUnited States, some telephonearea codes weresplit without a period to allow customers to readjust, learn, or change equipment, such as apermissive dialing period.
Another example is an immediate switch from ananalog television channel to adigital television channel on the same frequency, where the two cannot operate in parallel without interference.
A flash cut can also define a procedure in which multiple components of computer infrastructure are upgraded in multiple ways, all at once, with no phase-in period.
In film, an extremely brief shot, sometimes as short as one frame, which is nearly subliminal in effect. Also a series of short staccato shots that create a rhythmic effect.[1]
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