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Group seeks to recreate famous Roman monument on the University of ... - UO News

When the autumnal equinox peaked at 3:23 p.m. (PDT) on Thursday, Sept. 22, a University of Oregon team working to reconstruct  One of the world’s most famous solar clocks savored – and recorded – the moment by making another observation at a test site on campus.Historian John Nicols and physicist Robert Zimmerman have joined with architects James Tice and Virginia Cartwright to lead a group of scholars and students seeking to create a replica of the Horologium / Solarium of Augustus, a 60-foot granite obelisk erected at Heliopolis in the seventh century B.C. by Psammetichus II and brought to Rome by Augustus in 10 B.C. The obelisk was to be used as the “gnomon” (the staff against which the shadow is projected from the sun to the ground) of a new solar calendar and “clock.“It was a momentous event in the history of time, for it marks the revolutionary shift in time-keeping from the lunar to a solar-based system we Now use,” said Nichols, who specializes in ancient history and the history of science.“What makes the Augusti solarium so significant is that it was the first attempt in the West to display The Hours of the day and the days - More available

Autumnal Equinox

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