Electric Universe: The Shocking True Story of Electricity [NOOK Book]


In his bestselling E=mc2, David Bodanis led us, with astonishing ease, through the world’s most famous equation. Now, in Electric Universe, he illuminates the wondrous yet invisible force that permeates our universe—and introduces us to the virtuoso scientists who plumbed its secrets.

For centuries, electricity was seen as little more than a curious property of certain substances that sparked when rubbed. Then, in the 1790s, Alessandro Volta ...
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Electric Universe: The Shocking True Story of Electricity

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In his bestselling E=mc2, David Bodanis led us, with astonishing ease, through the world’s most famous equation. Now, in Electric Universe, he illuminates the wondrous yet invisible force that permeates our universe—and introduces us to the virtuoso scientists who plumbed its secrets.

For centuries, electricity was seen as little more than a curious property of certain substances that sparked when rubbed. Then, in the 1790s, Alessandro Volta began the scientific investigation that ignited an explosion of knowledge and invention. The force that once seemed inconsequential was revealed to be responsible for everything from the structure of the atom to the functioning of our brains. In harnessing its power, we have created a world of wonders—complete with roller coasters and radar, computer networks and psychopharmaceuticals.

A superb storyteller, Bodanis weaves tales of romance, divine inspiration, and fraud through lucid accounts of scientific breakthroughs. The great discoverers come to life in all their brilliance and idiosyncrasy, including the visionary Michael Faraday, who struggled against the prejudices of the British class system, and Samuel Morse, a painter who, before inventing the telegraph, ran for mayor of New York City on a platform of persecuting Catholics. Here too is Alan Turing, whose dream of a marvelous thinking machine—what we know as the computer—was met with indifference, and who ended his life in despair after British authorities forced him to undergo experimental treatments to “cure” his homosexuality.

From the frigid waters of the Atlantic to the streets of Hamburg during a World War II firestorm to the interior of the human body, Electric Universe is a mesmerizing journey of discovery by a master science writer.

From the Hardcover edition.
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Editorial Reviews

Library Journal
Bodanis, a former Oxford lecturer and current popular science writer (e=mc2), explores the social impact and scientific development of electricity. He devotes individual chapters to the chronological development of technological applications from batteries, light bulbs, telegraph, electric motors, and radio to radar, transistors, computers, and neurotransmitters. Written in a nontechnical and conversational style, Bodanis's historical vignettes and stories of scientific breakthrough will spark readers' interest, but the lack of illustrations and historical photographs is an unfortunate drawback. Still, his successful intertwining of scientific facts and historical context makes this book a good choice for most popular science collections. [See Prepub Alert, LJ 10/15/04.]-Ian Gordon, Brock Univ. Lib., St. Catharines, Ont. Copyright 2004 Reed Business Information.
Kirkus Reviews
An historical look at our knowledge of electricity and the ways we use it. Bodanis (E=mc2, 2000, etc.) begins with the 19th-century researchers who, with only rudimentary understanding of electricity, found ways to make it perform miracles. Joseph Henry, teaching in an Albany boys' school, began experimenting in the 1820s with the newly discovered electromagnet. He quickly realized that an electrical pulse could carry a signal down a wire-the key principle of the telegraph. Samuel Morse turned the idea (which others had played with over the years) into a practical device by 1844. Three decades later, Alexander Graham Bell's telephone extended the principle to the spoken word. Theory, catching up with practice, deduced that particles of electricity-electrons-carried the signals along wires at nearly the speed of light. Other experimenters-Faraday, Kelvin, Clerk Maxwell, Hertz-learned that electrical pulses generate a field that spreads not just along wires but through space. The first practical result was radio, which Bodanis plausibly argues changed history more than any previous electrical device. Another technical breakthrough was waiting around the corner in the form of the semiconductor, which made possible the manufacture of small, inexpensive electrical devices, ultimately including the modern computer. Bodanis continues his survey with the biological role of electricity as chemical ions carry signals through the nervous system and the rest of the body. By regulating the amount of certain ions, researchers can design new medicines to treat diseases formerly beyond the reach of science. Bodanis sometimes overreaches in attempting to show the impact of inventions on society-rock 'n'roll gained its foothold in youth culture well before the widespread use of transistors either in radios or in musical instruments. But his accounts of the lives of inventors and theorists are riveting nevertheless, including his quotations from Hertz's journals. An illuminating and rewarding exposition on the links between scientific discovery and daily life. Author tour
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Product Details

  • ISBN-13: 9781400050604
  • Publisher: Crown/Archetype
  • Publication date: 2/15/2005
  • Sold by: Random House
  • Format: eBook
  • Pages: 288
  • Sales rank: 727,550
  • File size: 353 KB

Meet the Author

David Bodanis taught a survey of intellectual history at the University of Oxford for many years. He is the author of several books, including The Secret House and the bestselling E=mc2, which was translated into more than twenty languages. A native of Chicago, he lives in London. His website can be found at davidbodanis.com.

From the Hardcover edition.
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Read an Excerpt

Part I: No Wires

When the universe was very young, in the first moments after the Big Bang, powerful charged electrons began to pour out of the swirling furnace that filled empty space. Many became part of simple hydrogen atoms that tumbled through the cosmos and ended up within huge stars.

In their long sojourn within the stars, and then even more when the stars blasted apart, multitudes of those simple atoms were squeezed together with such force that larger atoms were created.

Metals such as copper, iron, and silver were born.

For eons these metals, too, floated through space. In time they fell toward a new solar system, and became part of ore deposits on the North American continent. They were joined by metal atoms that had been created in other distant starbursts. Hidden deep inside each atom, as the ore lay buried, powerful electron charges remained.

Mountains rose and fell. Giant reptiles hunted in fern forests; ecosystems changed, and giant mammals hunted in coniferous and broad-leaf forests. Small groups of arrow-using humans arrived from Asia; thousands of years later, more humans arrived, on giant floating vessels from Europe and Africa. There were cruel frontier wars, and new settlements arose. The soil was turned over for planting, and probed for metal ore. The hidden electrical charges, unchanged for billions of years, were about to be released.

1: The Frontiersman and the Dandy: Albany, 1830, and Washington, D.C., 1836

Joseph Henry was a strapping, rawboned American from the distant reaches of the frontier state of New York, who by the age of thirty had left jobs as a handyman (too boring), a builder (too low paid), a metal worker (too hot), and then, most disastrously, a surveyor, where he’d let himself be talked into leading a crew for several winter months through the forests toward the Canadian border (far, far too cold). In 1826, freshly back from the surveying and miraculously undamaged by frostbite, he heard about a position at a school in his native town of Albany. The salary would be low, and as a new hire Henry would be stuck with teaching elementary arithmetic along with other topics. But the classrooms would be warm—so he nabbed the new job in an instant.

He had dozens of farm boys to keep quiet—boys expert at spitballs and pencil jabs—but he knew what would keep them happy. Boys like building stuff, and the bigger the better. He’d just give them something really, really big to build.

The new field of electricity would be a good place to hunt for an idea, he decided, for it was an area he’d long been intrigued by in a casual, self-educated way. The word covered a whole range of effects, from small sparks of static to the giant lightning bolts investigated, famously, by Philadelphia’s best-known retired printer, Benjamin Franklin. It was interesting stuff, for it always seemed to involve a strange sort of sparking substance. No one knew much more about what it actually was, though—but Henry had just heard an intriguing hint.

Not many European science journals made it to Albany, but one that did, months late—after the usual long ocean voyage and the wait for the ice on the Hudson to melt—described the extraordinary experiment of a recently demobilized British artillery officer, William Sturgeon.

When Sturgeon had taken a piece of iron and wrapped a coil of wire around it, nothing much had happened. That was fair enough. But when he’d gone on and connected the wire to a battery so that Volta’s mysterious “electric” current sparked through the wire, the ordinary iron had seemed to come alive. It had turned into a strong magnet that pulled other pieces of iron toward itself, as if an invisible force were jumping from the wire into the room. Switch off the battery and everything stopped; the original lump of iron became inert, and what it had lifted toward itself fell off. It was no longer magnetized.

Sturgeon didn’t know what to make of this discovery, but Henry knew exactly what to do with it. His boys were suffering a general winter restlessness, and this amazing toy is what he could use to keep their attention. The boys were good with their hands, and liked solid physical things, as their parents did too: most of the wooden houses around Albany were newly built, and it was often the settlers themselves who had done the building. If he could make the electrical magnet really huge, he’d have them all on his side.

Creating a battery to power the whole contraption wasn’t too hard, for there was plenty of metal ore available, either mined locally or brought overland from the big ports to the East. Henry was a fast worker, and by 1827 he had duplicated Sturgeon’s work, creating an electromagnet that could lift nine pounds. The boys in his classroom wrapped still more coils of wire around the lump of iron. The battery was switched on. The wrapped chunk of iron could now lift more than twenty pounds. Henry did yet more wrapping, and when the coils of wire got so close together that they touched and start crackling, he simply asked his new bride for her petticoats, enlisted her to help cut them into strips, and used the cloth to insulate the copper wires so they could be wrapped even more tightly together.

By 1830, there on the edge of the American frontier, he had succeeded in building a small electromagnet that could lift 750 pounds. The schoolkids loved it, and no doubt asked some of their friends—still out on the farms—to come by to watch this marvel. Henry was proud of it too, but for a deeper reason. He was a deeply religious man and had always suspected that God had created marvels not visible to ordinary eyes. With enough ingenuity, though, we could magnify and reveal God’s hidden work.

Henry kept on going. Before he was done, he had wrapped a small chunk of iron so tightly with wire that when the battery was switched on, that small chunk lifted more than 1,500 pounds—the weight of several big blacksmith anvils. Just so everyone could see, he hoisted the whole thing up on a sturdy scaffolding. Disconnect the battery, and with an almighty crash—“This never fails to produce a great sensation,” Henry wrote—all that weight would come plummeting down.

There are times when it pays to worry about underlying explanations, and there are other times when good honest tinkering is the best way forward. Future researchers would learn that the atoms we’re made of aren’t solid little ball bearings, but that parts of them are electrically charged and can be torn off. Those torn-off bits are called electrons, and researchers by the end of the 1800s came to believe that they were what rolled forward inside a wire, and it was the power of those charged electrons that gave an electric current its strength. When an electric cable gets cut open in a storm, the sparks that spray out are a sign of the streams of electrons that were inside the cable. Within a phone wire, electrons are rolling forward, and inside a powerful searchlight, even more electrons are moving.

Henry himself would become a big part of the research leading up to those findings: in years to come he became recognized as one of the greatest American physicists of the nineteenth century, ending up as director of the Smithsonian. But at this point, fairly young and still stuck in Albany, he knew he wasn’t going to arrive at much of an explanation of all the lifting and banging his electromagnets could produce.

Instead he invented the telegraph. It was easy enough. He just lengthened the wire that stretched from his battery to the electromagnet. The electrons that poured out from the metals in the battery were powerful enough to seemingly hurtle themselves along. Rather than keep the battery right next to the electromagnet when he turned it on, he could carry it to the next room, or down the hall, or even downstairs. The mysterious electric force would move along from his battery through the wire, and turn on the electromagnet waiting at the end of the wire. Any lump of iron next to it would be tugged close.

It would have been a pretty galumphy telegraph if he’d had it lift up and then drop giant chunks of metal every time he wanted to send a single letter of the alphabet. Instead, Henry went back to using a tiny electromagnet, even slimmer than the ones the British officer had created. Right next to it he put something resembling a small, clickable castanet, like a little metal tongue. Turn on the battery and a current ran down the wire, the electromagnet powered up, and it pulled the castanet toward itself. You heard a click. Turn off the battery and the electromagnet let go. You heard another click as the castanet went back. Henry realized it would be easy to communicate just by agreeing that different arrangements of clicks would represent different letters. The electric charges that had been dormant so long in the ancient metals was now coming out, to power this “click.”

From the Hardcover edition.

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Table of Contents

1 The frontiersman and the dandy : Albany, 1830, and Washington, D.C., 1836 15
2 Aleck and Mabel : Boston, 1875 27
3 Thomas and J. J. : New York, 1878 38
4 Faraday's God : London, 1831 61
5 Atlantic storms : HMS Agamemnon, 1858, and Scotland, 1861 71
6 A solitary man : Karlsruhe, Germany, 1877 95
7 Power in the air : Suffolk coast, 1939, and Bruneval, France, 1942 114
8 Power unleashed : Hamburg, 1943 130
9 Turing : Cambridge, 1936, and Bletchley Park, 1942 155
10 Turing's legacy : New Jersey, 1947 173
11 Wet electricity : Plymouth, England, 1947 197
12 Electric moods : Indianapolis, 1972, and today 212
Mr. Amp, Mr. Volt, and Mr. Watt 233
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  • Anonymous

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    Each chapter was incredibly interesting while at the same time explaining important scientific principles in a easily understandable manner. Highly reccommend.

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