Answer
If an image lingers for 200 milliseconds and we projected five frames per second, each frame would have just faded away by the time the next frame was projected.
Work Step by Step
There is not an exact answer. If an image lingers for 200 milliseconds and we projected five frames per second, each frame would have just faded
away by the time the next frame was projected. This would probably result
in a pulsating image that would be uncomfortable to watch for an extended
time but still produce an animated effect. (In fact, slower rates can produce
rough animation.) Note that the rate of five frames per second is well below
the motion picture standard of twenty-four frames per second.
