Sad news arrived last week that kinetic artist and exhibit builder Norman Tuck had passed away peacefully at home. Norman contributed greatly to the collection of exhibits at the Exploratorium in San Francisco and to me, he was always a conduit to the spirit of the original museum at the Palace of Fine Arts. There are a half dozen of his creations like oscylinderscope, three balls on a string and lariat chain, that you can find in science museums all around the world.