Speed Of Light Calculated In Early Science Work
A note highlights Roemer’s 17th century timing of Io’s eclipses to estimate light’s speed. He found light travels about 186000 miles per second, close to modern value, based on Earth’s orbital distance from Jupiter. The article links Galileo’s early telescope work to later measurements in a concise science scrapbook style.
MENTIONED IN THIS ARTICLE
Nancy van Name
Olaus Roemer
Jupiter
Roemer
Earth
U S Grains Feed Danish Livestock
Amsterdam reports that Dutch pigs are fed largely on American grown wheat and barley. Henry Petrie, a major meat exporter, notes American pigs fed on corn are fatter, while Dutch pigs receive a sterner diet of US export wheat and barley, yielding leaner meat preferred by Americans.
MENTIONED IN THIS ARTICLE
Amsterdam
Netherlands
United States
Henry Petrie
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Albuquerque
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Deborah Jean Deerman
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Mr.dithers
Dagwood
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Clyde the Fuzz
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Chas Kuhn
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