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Real Lace
Stephen Birmingham turns his eye to the great Irish-Catholic dynasties of America - violent, colorful, charming and charmed: the Kennedys, the Cuddihys, Buckleys and Bradys, and the California "Silver Kings", the Floods, Fairs, Mackays and O'Briens. Many of these families started with every disadvantage; fleeing from the great Irish potato famine, they arrived penniless in the slums of New York and Boston. But from desperate poverty and degradation they rose to fame and fortune, fueled by a powerful combination of driving energy, native wit, strong religion, stronger drink, and, of course, the luck of the Irish. Remarkable characters, warring families, and fluctuating fortunes - out of this rich material Birmingham has fashioned an extraordinary social history.
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The Meaning of Unity in Energy Conversion Systems
Initially, it had been assumed that a simple ratio computed by dividing the output power by the input power would provide a reliable yardstick for motor power efficiency. The basic idea was sound, for the closer the quotient came to unity, the nearer the motor efficiency would be to 100%. Hence began the so-called "Quest for Unity." However, early "electric engines" were very inefficient, probably delivering no more than 30% of the electrical input power to the output shaft. Therefore, it quickly became evident that not all the applied power was being converted to a mechanical output. Clearly, inefficiencies were involved, and they would have to be accounted for. Until this was complete, the...
