Discount televisions au > Crystal Clear: The Struggle for Reliable Communications Technology in World War II

Crystal Clear: The Struggle for Reliable Communications Technology in World War II

$52.75

Quartz crystal— a technology that changed the tide of World War II

Some of the defining leaps in technology in the twentieth century occurred during the Second World War, from radar to nuclear energy. Often left out of historical discussions are quartz crystals, which proved to be just as pivotal to the Allied victory— and to post-war development— as other technologies. Quartz crystals provided the U.S. military, for the first time, with reliable communication on the front lines, and then went on to become the core of some of the most basic devices of the post-war era, from watches, clocks, and color televisions, to cell phones and computers.

In Crystal Clear, Richard Thompson relates the story of the quartz crystal in World War II, from its early days as a curiosity for amateur radio enthusiasts, to its use by the United States Armed Forces. It follows the intrepid group of scientists and engineers from the Office of the Chief Signal Officer of the U.S. Army as they raced to create an effective quartz crystal unit. They had to find a reliable supply of radio-quality quartz; devise methods to reach, mine, and transport the quartz; find a way to manufacture quartz crystal oscillators rapidly; and then solve the puzzling "aging problem" that plagued the early units. Ultimately, the development of quartz oscillators became the second largest scientific undertaking in World War II after the Manhattan Project.

Bringing to light a little-known aspect of World War II, Crystal Clear offers a glimpse inside one of the most significant efforts in the annals of engineering.

Mathematics of Interest Rates and Finance

This book presents the basic core of information needed to understand the impact of interest on the world of investments, real estate, corporate planning, insurance, and securities transactions. Needing only a working knowledge of basic algebra, arithmetic, and percents, readers can understand well those few underlying principles that play out in nearly every finance and interest problem. Using time line diagrams to analyze money and interest, this book contains a great deal of practical financial applications of interest theory. It relies on the use of calculator and computer technology instead of tables, covering simple interest, discount interest, compound interest, annuities, debt retirement methods, stocks and bonds, and depreciation and capital budgeting. For those employed in fields of investments, real estate, corporate planning, insurance, and securities, as well as those who wish to understand the impact of interest rates on their own personal finances. Mathematics of Interest Rates and Finance
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Rides: The Complete Second Season

It's a new season of building and racing on "Rides," and without a doubt, this is the top crop yet. Stars like Jay Leno, Christopher Titus and Jack Osbourne make the scene, along with makes such as Lamborghini, Deusenberg, and a couple names that are far too undercover to mention. It's "Rides" as never before ? All new, all fast and of course ? all incredibly cool. The most comprehensive and definitive televisions series on hot rod cars ever produced. Hosted by movie star and car enthusiast Dylan Bruno. Five-Disc Set contains the complete second season of "Rides." Episodes include: Episode 1 - "Drifters" - The biggest rage today. Episode 2 - "Soccer Mom" - A comic and his search for cool in suburbia. Episode 3 - "Eleanor" - Build me a movie star. Episode 4 - "Rat Rods" - Getting the ride down to the basics. Episode 5 - "702 Motoring" - Let's get this party started. Episode 6 - "Joe Rogan's Sick Fish" - Troy, Chip, Joe and a car beyond description. Episode 7 - "Darkside" - Jack Osbourne... Rides: The Complete Second Season
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Five-Finger Discount: A Crooked Family History by Helene Stapinski, ISBN 0375758704

With deadpan humor and obvious affection, Five-Finger Discount recounts the story of an unforgettable New Jersey family of swindlers, bookies, embezzlers, and mobster-wannabes. In the memoir Mary Karr calls "a page-turner," Helene Stapinski ingeniously weaves the checkered history of her hometown of Jersey City--a place known for its political corruption and industrial blight--with the tales that have swirled around her relatives for decades. Navigating a childhood of toxic waste and tough love, Stapinski tells an extraordinary tale at once heartbreaking and hysterically funny. Five-Finger Discount: A Crooked Family History by Helene Stapinski, ISBN 0375758704
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