A. E. (Andrew Ellicott) Douglass (July 5, 1867, Windsor, Vermont - March 20, 1962, Tucson, Arizona) was an American astronomer. He discovered a correlation between tree rings and the sunspot cycle.Read more
A. E. (Andrew Ellicott) Douglass (July 5, 1867, Windsor, Vermont - March 20, 1962, Tucson, Arizona) was an American astronomer. He discovered a correlation between tree rings and the sunspot cycle.