Preface: Playing with the universe -- Part I. Magnet -- The beginning of things -- The unpaired spinning electron -- Parking in the shadow of magnetism's forgotten man -- Into whose embrace iron leaps -- Revolutions on paper -- The Earth's magnetic soul -- Voyage into the underworld -- The greatest scientific undertaking the world had ever seen -- The rock that turned the world upside down -- Part II. Current -- Experiment in Copenhagen -- A very intimate relationship -- Jars full of lightning -- The apothecary's son -- The bookbinder's apprentice -- Magnets making currents -- The lines that fill the air -- Part III. Core -- The contorting gyre -- Shocks inside the Earth -- Pharaohs, fairies, and a tar-paper shack -- Zebra skins under the sea -- At the outer edge of the dynamo -- Anomaly to the South -- The worst physics movie ever -- The great hazardous spinning sphere of sodium -- Part IV. Switch -- Looking up -- Horrors the lights foretold -- Lethal patches -- The cost of catastrophe -- Trout noses and pigeon beaks -- A suit of stiff black crayon.
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