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Gnomon Chronicles is a work of fiction and nonfiction by Karl Jones.
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On This Day in History: July 6
1423: Mathematician and architect Antonio Manetti born. He will investigate the site, shape and size of Dante's Inferno, and write a biography of the architect Filippo Brunelleschi.
1476: Mathematician, astronomer, and bishop Johann Regiomontanus dies. He madecontributions to astromony which will be instrumental in the development of Copernican heliocentrism in the following decades.
1913: Mathematician Jordan Carson Mark born. He will oversee the development of nuclear weapons for the US military, including the hydrogen bomb in the 1950s.
1990: The Electronic Freedom Foundation is founded. EFF is an international non-profit digital rights group based in San Francisco, California.