While researching to answer Why are "Inverted Colors" considered an accessibility feature? I noticed the puzzling claim that "White text on a black background is a higher contrast to the opposite, so ...
In Human Computer Interaction and User Experience there's some oft repeated rules of performance: 0.1 second is about the limit for having the user feel that the system is reacting ...
There are some important thresholds of frame rate in video playback that effect whether or not animation appears fluid. This wikipedia page about Visible Frame Rate suggests that a framerate of 60 ...