mr.henry writes "Engineers at the Japanese Broadcasting Corporation (NHK) have developed a prototype ultra high definition video (UHDV) system. How good is it? When it was shown to the public, some viewers experienced nausea because of the ultra realistic visual effect of speed without the usual physical sensation of movement. 18 minutes of UHDV takes up 3.5 terabytes." 4,000 horizontal scanlines. Excellent.