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The experiments in this book are derived from experiments that Thomas Alva Edison performed himself. Edison, whose inventive genius has not been suprassed, had a great curiosity about nature and the workings of common substances. A smoking lamp chimney, for instance, led to the invention of the carbon button, which made possible the long distance telephone transmitter. The inventor recorded... More

The experiments in this book are derived from experiments that Thomas Alva Edison performed himself. Edison, whose inventive genius has not been suprassed, had a great curiosity about nature and the workings of common substances. A smoking lamp chimney, for instance, led to the invention of the carbon button, which made possible the long distance telephone transmitter. The inventor recorded the progress of his research in a series of notebooks. From the Edison notebooks come the experiments in this book. As the young scientist works out the experiments he will become familiar with some of the basic scientific principles underlying such great inventions and discoveries as the incandescent lamp, the carbon button, the fuse, and etheric force--wireless. He can build a phonograph, which the inventor called a talking machine, or he can make a simplified version of Edison's electric pen, which was the forerunner of the modern mimeograph machine. There are chapters on insulation, the quadruplex, the telespecan and the Edison Effect. A brief biography of Edison prefaces the experiments. The authorative text is by Marjorie Van de Water, a veteran popular science writer on the staff of Science Service. The photographs of the experiments were taken especially for this book by Fremont Davis. Here is a fascinating introduction to the mind of a man who in many ways changed our world

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