Shots of the National Film Board of Canada (NFB) science film crew setting up an experiment in their Montreal studio, cameraman with back towards the camera, Ernie McNabb loading miniature gun, Barrie McLean supervising from above. TILT DOWN to experiment, crew, from McLean's level. Shot of miniature gun firing, recoiling and swinging back and forth in front of yellow backdrop. Vertical HAS of another experiment being set up. Closer shot of board, hands placing balls in centre, cluster of balls breaking apart, hands reassembling balls.