词汇 | according to gunter etc |
词源 | according to Gunter, etc. Many practical inventions still in use were invented by the English mathematician and astrono- mer Edmund Gunter nearly four centuries ago. Gunter, a Welshman, was professor of astronomy at London’s Gresham College from 1619 until his death five years later when only 45. In his short life he invented Gunter’s chain, the 22-yard- long, 100-link chain used by surveyors in England and the United States; Gunter’s line, the forerunner of the modern slide rule; the small portable Gunter’s quadrant; and Gunter’s scale, commonly used by seamen to solve navigation prob- lems. Gunter, among other accomplishments, introduced the words cosine and cotangent and discovered the variation of the magnetic compass. His genius inspired the phrase according to Gunter, once as familiar in America as “according to Hoyle” is today. |
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