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Andrew E. Douglass
A. E. (Andrew Ellicott) Douglass (July 5, 1867 in Windsor, Vermont – March 20, 1962 in Tucson, Arizona) was an American astronomer. He discovered a correlation between tree rings and the sunspot cycle, and founded the discipline of dendrochronology, which is a method of dating wood by analyzing the growth ring pattern. He started his discoveries in this field in 1894 when he was working at the Lowell Observatory. During this time he was an assistant to Percival Lowell, but fell out with him when his experiments made him doubt the existence of artificial "Martian canals, canals" on Mars and visible cusps on Venus. Impact crater, Craters on the Douglass (lunar crater), Moon and Mars are named in his honor. Founding of Steward Observatory After a 5-year hiatus from astronomy, Douglass left Flagstaff, Arizona in 1906 and accepted a position as Assistant Professor of Physics and Geography at the University of Arizona in Tucson, Arizona. Almost immediately upon his arrival in Tucso ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Windsor, Vermont
Windsor is a town in Windsor County, Vermont, United States. As the "Birthplace of Vermont", the town is where the Constitution of Vermont was adopted in 1777, thus marking the founding of the Vermont Republic, a sovereign state until 1791, when Vermont joined the United States. Over much of its history, Windsor was home to a variety of manufacturing enterprises. Its population was 3,559 at the 2020 census. History One of the New Hampshire grants, Windsor was chartered as a town on July 6, 1761, by colonial governor Benning Wentworth. It was first settled in August 1764 by Captain Steele Smith and his family from Farmington, Connecticut. In 1777, the signers of the Constitution of the Vermont Republic met at Old Constitution House, a tavern at the time, to declare independence from the Great Britain (the Vermont Republic would not become a state until 1791). In 1820, it was the state's largest town, a thriving center for trade and agriculture. In 1835, the first dam was built ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
