Demos by PIRA
9A Support Systems / Facility
9A10 Blackboard Tools
9A20 Audio
9A30 Slide Projectors
9A30.20Lantern slide projector with removable housing.
9A34 Film Projectors
9A36 Overhead Projectors
9A38 Video & Computer Projection
9A40 Photography
9A50 X-Y, Chart Recorders
9A60 Buildings
9A65 Museums
9A70 Resource Books
9A73 Unclassified Demonstrations
9A75 Philosophy
9A80 Films
9A80.40Film: "Photons", sound, 19 min..
9A80.40Film: "Interference of photons", sound 13 min.
9A85 Computer Programs
9B Electronic
9B10 Timers
9B15 Position and Velocity Detectors
9B17 Sources of Sound
9B60 Light Sources
9B18 Sound Detectors
9B20 Circuits/Components/Instruments
9B20.30Photomultiplier tubes to show.