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Pilot balloon slide rules were used by meteorologists in weather services to determine the upper wind velocities from an ascending hydrogen or helium-filled pilot balloon. [27] The E6-B is a circular slide rule used by pilots and navigators. Circular slide rules to estimate ovulation dates and fertility are known as wheel calculators. [28]
The International Slide Rule Museum (ISRM) is an American museum dedicated to the preservation and display of slide rules and other mathematical artefacts. Established in 2003 by Michael Konshak, who serves as its curator, [3] [4] the museum houses a collection of slide rules from divers manufacturers and time periods, showcasing the evolution and importance of these instruments in the history ...
In 1937, Hayner designed and constructed a circular slide rule in Braille. The construction took over 100 hours and the resulting slide rule offered slightly better reading accuracy than the conventional 12-inch straight slide rule in use at the time. [4]
Walter Shawlee (1949 or 1950 — September 4, 2023) was a renowned American collector of slide rules.He was born in Los Angeles, [1] and attended University of California, Los Angeles to study electronics engineering and mathematics, and left before completing a degree. [2]
The same month, Trump made another fateful decision: to end his crusade against vote by mail and early voting.For more than a year, senior advisers urged him to embrace a practice Trump had ...
The Bygrave slide rule is a slide rule named for its inventor, Captain Leonard Charles Bygrave of the RAF. It was used in celestial navigation , primarily in aviation. Officially, it was called the A. M. L. Position Line Slide Rule (A.M.L. for Air Ministry Laboratories).
After all, the Sahm Rule’s accuracy rate is 100% going back to every recession since the early 1970s. “It’s been very accurate over time, so that shouldn’t be dismissed,” Sahm said ...
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