Re:Right ... (Score 1)

Actually there ARE 60 unique pictures per second (50 in PAL). If a football crosses the screen horizontally in 1 second, the TV will show 60 different evenly spaced positions of the ball (unless the original source is film or a progressive scan camera). TVs have never synchronized to the power line. The correlation to the power line frequency is to prevent power supply ripple (typically from borderline bad filter capacitors in the TV) from causing a rolling wave in the picture. Intelace was NOT chosen to overcome slow phosphor. It was to (sort of) double the vertical resolution without increasing the bandwidth.