More speculation on the implications of nanotechnology—the manufacture of objects from the atoms up—that is likely, say the authors, to profoundly alter within our lifetimes the course of modern medicine, warfare, the environment, and the world economy. Peterson and Pergamit were collaborators on Drexler's previous Engines of Creation (1986). Five years have passed since Drexler, an MIT graduate and now a Stanford Visiting Scholar, first announced in the popular media the coming of molecule-sized machines that could not only produce extremely reliable, uniform, recyclable, inexpensive, and ``smart'' products (housepaint that smooths and cleans itself; molecular machines that identify and destroy cancer cells; microscopic concoctions that break pollutants down into harmless components) but also could supplant the earth's petroleum-based manufacturing industry with enormously more energy-efficient, precise, and environmentally safe methods. Such technology is not only already technically feasible, the authors claim, but its development, which would dwarf the computer and communications revolutions and could enable Third World countries to skip the dreaded industrial phase of development altogether, is practically a foregone conclusion. Economic competition demands a more concerted and better-funded research-and-development effort by the US (Japan's Tokyo Institute of Technology is already actively exploring nanotechnology's possibilities), while the new technology's potential for revolutionizing weapons manufacture demands public thought and discussion now—before the revolution takes place. Extreme oversimplification of the technical descriptions may be off-putting to readers with more than a high-school education, but intriguing discussions of ethical issues and several sobering future-world scenarios render this an important and provocative bulletin from exploratory engineering's front lines.
Pub Date: Sept. 20, 1991
ISBN: 0-688-09124-5
Page Count: 366
Publisher: Morrow/HarperCollins
Review Posted Online: May 20, 2010
Kirkus Reviews Issue: July 15, 1991
Categories: SCIENCE & TECHNOLOGY
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It took 14 years to build and it cost 15 million dollars and the lives of 20 workmen. Like the Atlantic cable and the Suez Canal it was a gigantic embodiment in steel and concrete of the Age of Enterprise. McCullough's outsized biography of the bridge attempts to capture in one majestic sweep the full glory of the achievement but the story sags mightily in the middle. True, the Roeblings, father and son who served successively as Chief Engineer, are cast in a heroic mold. True, too, the vital statistics of the bridge are formidable. But despite diligent efforts by the author the details of the construction work — from sinking the caissons, to underground blasting, stringing of cables and pouring of cement — will crush the determination of all but the most indomitable reader. To make matters worse, McCullough dutifully struggles through the administrative history of the Brooklyn Bridge Company which financed and contracted for the project with the help of the Tweed Machine and various Brooklyn bosses who profited handsomely amid continuous allegations of kickbacks and mismanagement of funds. He succeeds in evoking the venality and crass materialism of the epoch but once again the details — like the 3,515 miles of steel wire in each cable — are tiresome and ultimately entangling. Workmanlike and thorough though it is, McCullough's history of the bridge has more bulk than stature.
Pub Date: Oct. 1, 1972
ISBN: 0743217373
Page Count: 652
Publisher: Simon & Schuster
Review Posted Online: Oct. 12, 2011
Kirkus Reviews Issue: Oct. 1, 1972
Categories: GENERAL HISTORY | SCIENCE & TECHNOLOGY | UNITED STATES | HISTORY
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Undeterred by a subject difficult to pin down, Italian theoretical physicist Rovelli (Reality Is Not What It Seems: The Journey to Quantum Gravity, 2017, etc.) explains his thoughts on time.
Other scientists have written primers on the concept of time for a general audience, but Rovelli, who also wrote the bestseller Seven Brief Lessons on Physics, adds his personal musings, which are astute and rewarding but do not make for an easy read. “We conventionally think of time,” he writes, “as something simple and fundamental that flows uniformly, independently from everything else, uniformly from the past to the future, measured by clocks and watches. In the course of time, the events of the universe succeed each other in an orderly way: pasts, presents, futures. The past is fixed, the future open….And yet all of this has turned out to be false.” Rovelli returns again and again to the ideas of three legendary men. Aristotle wrote that things change continually. What we call “time” is the measurement of that change. If nothing changed, time would not exist. Newton disagreed. While admitting the existence of a time that measures events, he insisted that there is an absolute “true time” that passes relentlessly. If the universe froze, time would roll on. To laymen, this may seem like common sense, but most philosophers are not convinced. Einstein asserted that both are right. Aristotle correctly explained that time flows in relation to something else. Educated laymen know that clocks register different times when they move or experience gravity. Newton’s absolute exists, but as a special case in Einstein’s curved space-time. According to Rovelli, our notion of time dissolves as our knowledge grows; complex features swell and then retreat and perhaps vanish entirely. Furthermore, equations describing many fundamental physical phenomena don’t require time.
As much a work of philosophy as of physics and full of insights for readers willing to work hard.Pub Date: May 18, 2018
ISBN: 978-0-7352-1610-5
Page Count: 256
Publisher: Riverhead
Review Posted Online: April 3, 2018
Kirkus Reviews Issue: April 15, 2018
Categories: SCIENCE & TECHNOLOGY
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