critical frequency of fusion

critical frequency of fusion

[¦krid·ə·kəl ¦frē·kwən·sē əv ′fyü·zhən]
(neuroscience)
A sufficiently high flash rate at which the eye fails to detect the flicker of a light; that is, the light pulses seem to fuse to form a steady light indistinguishable from a continuous light that has the same total energy per unit time.
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