Video, evolution, and gravity: how science affects digital video
summary
Asserts that many video decisions trace to biology and physics: human field of view ≈200°×135° and a fovea the size of a thumb at arm’s length, John’s law of vertical video (vertical appropriateness falls exponentially with amount of change), practical pixel densities (laptop ~160–532 ppi, phone ~228–760 ppi), hearing limit ~20,000 Hz so Nyquist drives 44100 Hz and 48,000 Hz sample rates, frame-rate floor ≈15 fps and useful ceiling ~150–200 Hz, film’s 24 fps uses 48/72 Hz flashes, and color rests on 1931 color matching with tetrachromats in ~12% of women.
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