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Measuring the universe: our historic quest to chart the horizons of space and time
More than 2,000 years ago, Eratosthenes, in Alexandria, used a stick, a hole in the ground, sunllght at summer solstice, and elementary geometry to measure the circumference of the Earth with surprising accuracy, long before anyone was able to circumnavigate it. Today, scientists are attempting to m...
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| Lenguaje: | eng |
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1999
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| Acceso en línea: | http://cds.cern.ch/record/1546674 |