quantum

Author: Johnson, George
Isbn 13: 9780393051285
ISBN: 0393051285
Pub Date: Jun 1, 2005
Publisher: W. W. Norton
Shipping Weight: 0.64 pounds
Status: Ships 4-9 days CALL RUSH SHIP

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Henrietta Swan Leavitt was a Harvard Observatory computer, human number cruncher hired to calculate the positions and luminosities of stars in astronomical photographs who found the key to the mystery of the size of the universe. Fighting ill health and progressive deafness, she stumbled upon a new law that allowed astronomers to use variable stars as a cosmic yardstick.
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