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Time lapse

From Biology-Online Dictionary
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time lapse

(Science: technique) technique applied to speed up the action in a film or videotape sequence.

In filming by taking a frame every few seconds and projecting at conventional speed (16 or 24 frames per second), the movements of cells can be greatly speeded up and then become conspicuous. With videotape, the recording is made at slow tape speed and replayed at full speed. The opposite of slow motion.