Spectra Stack Tape Library Overview
Spectra Stack Tape Library Overview
6 months ago
spectralogic.com
197K views · 1.6K reactions | Barred from using telescopes, the women of the Harvard Observatory studied the stars in a different way through glass photographic plates. They mapped the heavens by hand one star at a time. Leavitt discovered how to measure cosmic distances. Cannon developed the star classification system still taught in astronomy classes. Underpaid and uncredited, they quietly redefined our place in the cosmos. | History Exposed | Facebook
197K views · 1.6K reactions | Barred from using telescopes, the wome…
69.1K views1 month ago
FacebookHistory Exposed
Barred from using telescopes, the women of the Harvard Observatory studied the stars in a different way through glass photographic plates. They mapped the heavens by hand one star at a time. Leavitt discovered how to measure cosmic distances. Cannon developed the star classification system still taught in astronomy classes. Underpaid and uncredited, they quietly redefined our place in the cosmos. | History Exposed
Barred from using telescopes, the women of the Harvard Observator…
771 views3 months ago
FacebookHistory Exposed
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Born in 1863, Delaware astronomer Annie Jump Cannon joined Harvard College Observatory’s “computers” in 1896 under Edward C. Pickering. Working at the objective-prism telescope’s plate stacks, she examined stellar spectra by eye, simplifying earlier schemes into the sequence O, B, A, F, G, K, M. Between 1918 and 1924 she led classification for the Henry Draper Catalogue, which listed 225,300 stars; extensions continued to 1936. Childhood scarlet fever left her largely deaf, so she relied on writ
Born in 1863, Delaware astronomer Annie Jump Cannon joined Harvar…
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