I seem to see a relationship between fps and 60 Hz being the power cycle in the US but when 24 and 30 are used I lose it. 30 maybe but 24 fps? "since frames keep a fixed phase relationship to the 60 Hz power-line cycles" and one hertz is defined as one cycle per second. In my thinking the rpm of the 'machine' running the film would be what changes fps but obviously it's not that simple. When speaking resolution is that per screen or a measured area like a inch or ?