National Geographic : 1965 Apr
Science's wealth of wonders SOME 7,000 visitors file through the RCA Pavilion each day to see them selves on color television (below, left) and hear a backstage briefing on the technological magic that splashes rainbows on their living-room screens. On the same site 26 years ago, RCA introduced black-and-white television to the United States. Official color TV center for the Fair, RCA telecasts news announcements, interviews with visiting dignitaries, highlights of other exhibits, and special events-more than 2,000 program hours from April to October. The pavilion also helped reunite families last year by showing lost children on some 200 television sets in buildings throughout the grounds. At the Dupont Pavilion, science joins showmanship (center). Here colorless liquids mixed in flasks shine with intense blue light in a demonstration of chemiluminescence-the same phenomenon that makes fireflies glow. In Dupont's production, "Wonderful World of Chemistry," live actors sing, dance, and talk with life-size motion-picture images on movable screens. One scene shows a live performer blowing out candles on a filmed birthday cake and spraying another actor with frosting. Eight different troupes, working simultaneously in two theaters, present the Dupont show 48 times daily.