Astronomy
1st Edition
ISBN:9781938168284
Author:Andrew Fraknoi; David Morrison; Sidney C. Wolff
Publisher:Andrew Fraknoi; David Morrison; Sidney C. Wolff
Chapter2: Observing The Sky: The Birth Of Astronomy
Section: Chapter Questions
Problem 41E: Suppose Eratosthenes had found that, in Alexandria, at noon on the first day of summer, the line to...
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Discuss how you could measure Earth's diameter using nothing but a shadow-casting stick, a protractor, and a car's trip odometer if on a road trip between two cities that are approximately on the same line of constant longitude with a relatively straight shot of road connecting them. How do you know when it is midday?
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