Word: earliest
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...directive reflects more than anything else the fact that the pioneering jetliners have reached middle age. The first 707s went into service back in 1958, and some of the earliest have since logged more than 250,000 flight hours. The hairline cracks are caused by metal fatigue that commonly develops in high-time aircraft at points where flex and strain occur; even in the DC-6, one of the sturdiest planes ever built, fissures were discovered in a number of wing spars in 1960. To date, said the FAA, no aviation accident of any kind has been attributed to such...
...will crack and break under the tension. The same is true of social institutions; change must be allowed for. But for an institution to be an institution, it must perforce have some rigidity." The U.S. has long managed to maintain a unique compromise between change and rigidity. Its earliest colonists came in flight from or defiance of an established order. Their earliest pride was that of the fresh start. "Under their hand, political principles, laws, and human institutions seem malleable, capable of being shaped and combined at will," wrote Alexis de Tocqueville in 1835. "A course almost without limits...
...appear to be too poisonous for general use. Phosphates are safer and more promising, and several communities are trying the addition of dicalcium phosphate to cereals and bread. Even the most skeptical investigators at the National Institute of Dental Research now believe that decay may be arrested in its earliest stages by painting the teeth with a solution containing tricalcium phosphate and potassium fluoride...
...knows when the idea of a single god became part of mankind's spiritual heritage. It does seem certain that the earliest humans were religious. Believing the cosmos to be governed by some divine power, they worshiped every manifestation of it: trees, animals, earth and sky. To the more sophisticated societies of the ancient world, cosmological mystery was proof that there were many gods. Ancient Babylonia, for example, worshiped at least 700 deities. Yet even those who ranked highest in the divine hierarchies were hardly more than invisible supermen. The Zeus of ancient Greece, although supreme on Olympus, was himself...
Chalmers came to Winthrop from a world of crystal structures and cryogenics. An authority in the filed of metallurgy, he was one of the earliest people to work with single crystals and the discoverer of a method of growing double crystals and studying the boundaries between them. After joining the Harvard faculty in 1953, he was named Gordon McKay Professor of Metallurgy and spent most of his time working in research with graduate students. A freshman seminar and Nat Sci I, "Energy in Science and Technology," which he volunteered to give in '61, provided his first experiences in undergraduate teaching...