Word: haled
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Dates: during 1980-1989
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...addition to teaching, Porter will this summer take over the chairmanship of the Senior Managers in Government program, a three-week seminar for high-ranking public officials, according to Kennedy School Executive Dean Hale Champion...
...premises examples. Near the end of his address, as proof that "anything is possible in America," Reagan introduced two special guests seated with wife Nancy in the visitors' gallery: Jean Nguyen, 21, a cadet at West Point whose family fled Viet Nam as refugees in 1974, and "Mother" Clara Hale, 79, a Harlem social worker who specializes in the care of heroin-addicted infants born of drug- abusing mothers. The President had scouted both of these "American heroes" himself: he read about Hale in a magazine and noticed Nguyen in a brief TV appearance...
...Keck telescope, as it will be called, is the first of a new generation of extra-large telescopes designed to overcome construction problems that have dogged sky gazers since before the Hale was dedicated in 1948. Photons (massless particles that transmit light) from an ancient galaxy may travel billions of light years through space before they speed down a telescope tube. But unless enough of them are collected, astronomers will not be able to see the galaxy's image. Gathering sufficient photons to register an image is accomplished by either taking long-exposure photographs or using a larger mirror system...
...advent of the computer has changed all that. Led by Astrophysicist Jerry Nelson, a team at the University of California designed an unorthodox mirror that will not be a continuous concave surface, like Hale's, but 36 hexagonal pieces of specially shaped glass, each 6 ft. across and 3 in. thick; the segments will be fit together and will move in concert to act as one giant parabolic mirror. That harmony is possible only with the aid of a computer- controlled sensing and positioning system, which will realign the components 100 times a second by as little...
Other design innovations follow in trickle-down fashion. Because a segmented mirror requires a much lighter support than a conventional one, the Keck telescope will weigh only 158 tons, a third the weight of the Hale instrument. Yet it will be able to perform miracles like taking infrared photographs that are 50 to 100 times sharper than any ever before made on earth. Says Caltech Astronomer Maarten Schmidt, famed for his discovery that quasars are the most distant and energetic objects ever observed: "In all aspects, a big telescope can do things better and faster than a small telescope...