Video works by half  frames and movies flash each image 2 to 3 times to get rid of flicker. Apparent motion is different from next topic which is flicker.  A much lower rate of update is necessary for apparent motion than flicker as will be seen.

Most artificial light sources flicker.  That is they turn on and off repeatedly. But that is a general value.  It depends upon many factors  such as brightness and size. So as brightness and size of monitors increased.   There is a need to increase the frame rate.  That is happening on many displays today but not all. Bridgeman, B. (1998).  Durations of stimuli displayed on video display terminals: (n-1)/f+persitence.  Psychological Science, 9, 232-233.

On clean motion:  observe lcd’s which are generally slower and thus on longer and recall the old green monochrome monitors on the early PCs Bridgeman, B. (1998).  Durations of stimuli displayed on video display terminals: (n-1)/f+persitence.  Psychological Science, 9, 232-233.

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