A. 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 "canals" on Mars and visible cusps on Venus.
Douglass (Martian crater)
Douglass (lunar crater)
Laboratory of Tree-Ring Research
Museum of Northern Arizona
Steward Observatory
1919 in archaeology1920 in science1928 in archaeology1929 in archaeology196220th century in scienceA.E. DouglassAE DouglassA E DouglassAndrew DouglassAndrew E. DouglassAndrew Ellicott DouglassAsimov's Biographical Encyclopedia of Science and TechnologyChaco_Culture_National_Historical_ParkDendrochronologyDouglass (surname)Earl H. MorrisEmil HauryFlagstaff,_ArizonaFlorence M. HawleyHistory of Flagstaff, ArizonaHistory of Mars observationHistory of climate change scienceHockey stick graphJuly 5List of Trinity College (Connecticut) peopleList of craters on Mars: A–GList of craters on the Moon: C–FList of people from Tucson, ArizonaList of people from VermontMarch 1962Martian canalMay 1919Meanings of minor planet names: 15001–16000Meanings of minor planet names: 2001–3000
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A. 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 "canals" on Mars and visible cusps on Venus.
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A. E. (Andrew Ellicott) Dougla ...... d Mars are named in his honor.
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A. E. (Andrew Ellicott) Dougla ...... cott är uppkallad efter honom.
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Andrew Ellicot Douglass (Conte ...... esso la University of Arizona.
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Andrew Ellicott Douglass (5 de ...... e fechados dendrocronológicos.
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Andrew Ellicott Douglass (né l ...... ont été nommés en son honneur.
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Е́ндрю Е́ллікот Ду́глас (англ. ...... о кратер на Марсі та астероїд.
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أ. إي. دوجلاس (بالإنجليزية: A. ...... في توسان في الولايات المتحدة.
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1867-07-05
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1962-03-20
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birth date
1867-07-05
birth place
death date
1962-03-20
death place
known for
Discovering a correlation between tree rings and the sunspot cycle
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Founding the discipline of dendrochronology
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name
A. E. Douglass
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A. E. (Andrew Ellicott) Dougla ...... rs and visible cusps on Venus.
@en
A. E. (Andrew Ellicott) Dougla ...... cott är uppkallad efter honom.
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Andrew Ellicot Douglass (Conte ...... esso la University of Arizona.
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Andrew Ellicott Douglass (5 de ...... e fechados dendrocronológicos.
@es
Andrew Ellicott Douglass (né l ...... ont été nommés en son honneur.
@fr
Е́ндрю Е́ллікот Ду́глас (англ. ...... о кратер на Марсі та астероїд.
@uk
أ. إي. دوجلاس (بالإنجليزية: A. ...... في توسان في الولايات المتحدة.
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label
A. E. Douglass
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A. E. Douglass
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Andrew Ellicott Douglass
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Andrew Ellicott Douglass
@fr
Andrew Ellicott Douglass
@it
Andrew Ellicott Douglass
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Ендрю Еллікот Дуглас
@uk
أ. إي. دوجلاس
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A. E. Douglass
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