We could write a book about that. When you watch a movie - you are seeing approximately 30 still pictures per second. Your eyes are fooled into seeing a continuous image. However, you can always tell the difference between the real thing and a movie of the real thing. This is similar to digital audio, where sound is chopped up into samples (instantaneous numerical representations of the strength of a sound). When the samples are reassembled by digital to analog converters, a sound can be heard as a representation of the original sound - today with quite good results.

Moog is pronounced so it rhymes with vogue.