Man at control panels, scientists, experiments, lab coats scientists wear glasses. Rare quartz crystals keep long distance calls on course. Shows how synthetic crystals are made and how they are more efficient than nature’s. Colorful spiral fades to illustration of early Earth. Spinning quartz crystal jar. Illustration of scientists in 19th century Paris laboratory, fading to film of scientist striking a crystal. A gauge spiking from 0 to 100 and back. Scientist squeezing a crystal in a vise. Gauge spiking. Crystals inside rotating vacuum tubes. Animated illustration of the function of quartz crystals in long-distance telephone calls. Live-action film of crystals in crates marked "Brasil.