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3 days ago · The distance between Syene and Alexandria was estimated to be about 5,000 stadia. Using the relationship that 7.2 degrees is 1/50th of a full circle, Eratosthenes multiplied the distance by 50 to arrive at the Earth's total circumference. This calculation yielded a figure of approximately 250,000 stadia. Converting this to modern units gives a ...
3 days ago · The Shortt–Synchronome clock, an electrical driven pendulum clock designed in 1921, was the first clock to be a more accurate timekeeper than the Earth itself. [167] A succession of innovations and discoveries led to the invention of the modern quartz timer. The vacuum tube oscillator was invented in 1912. [168]
2 days ago · This article includes a list of countries by their forecast estimated GDP (PPP). [2] Countries are sorted by GDP (PPP) forecast estimates from financial and statistical institutions that calculate using market or government official exchange rates.
1 day ago · Bonaire, an island municipality of the Netherlands, is off the coast of Venezuela. A video posted by the group shows the whale — measuring about 42 feet in length — diving just below the ...
2 days ago · NPR world news, international art and culture, world business and financial markets, world economy, and global trends in health, science and technology. Subscribe to the World Story of the...
1 day ago · Hamilton Golf & Country Club is a par-70 track measuring 7,084 yards. The purse at the 2024 RBC Canadian Open is $9.1 million with $1.638 million going to the winner. The champion will also ...
6 days ago · Rebooted Groundwater Monitoring Could Help Soggy Neighborhoods Fight Flooding. U.S. Geological Survey is measuring the depths of the water table across the city, including in areas at risk of inundation. USGS supervisory hydrologist Michael Como tests a groundwater well in Bowne Park, May 13, 2024. Credit: Ben Fractenberg/THE CITY.
