Katherine Johnson Dies at 101; Mathematician Broke Barriers at NASA

from NYTs They asked Katherine Johnson for the moon, and she gave it to them. Wielding little more than a pencil, a slide rule and one of the finest mathematical minds in the country, Mrs. Johnson, who died at 101 on Monday at a retirement home in Newport News, Va., calculated the precise trajectories that would let Apollo 11 land on the moon in 1969 and, after Neil Armstrong’s history-making moonwalk, let it return to Earth. A single error, she well knew, could have dire consequences for craft and crew. Her impeccable calculations had already helped plot the successful flight […]

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How to Celebrate Pi Day

from wikiHow Pi is a mathematical constant that is the ratio of a circle’s circumference to its diameter, and it is also one of the most revered mathematical constants in the known world.[1] Pi Day was first officially celebrated on a large scale in 1988 at the San Francisco Exploratorium.[2] Since then, Pi Day has been celebrated by millions of students and math-lovers. The holiday is celebrated on 14th March, since 3, 1, and 4 are the three most significant digits in the decimal form of pi. If you’d like to learn how to celebrate pi in due fashion, read on and […]

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