The escape velocity is a way of measuring the exact amount of energy needed to reach the lip of the well -- and have no energy left over for walking away. When a ball is thrown up into the air from the surface of the Earth, it does not have enough energy to escape. So it falls back down.
The American Chestnut is a large, broad tree that produces an edible chestnut. Large leaves turn yellow and brown in autumn. At least two American Chestnuts planted no more than 200' apart are required for producing chestnuts.This tree was very common before blight wiped out most of them in the early 1900's.ur pure American Chestnuts come from mature parents who have survived the blight and are producing chestnut seeds. For now, the possibility of American Chestnuts getting the blight sometime in their life is a real possibility.
There is no organized commercial chestnut industry in the United States or Canada, although these two countries are capable of producing chestnuts. Present acreage of chestnuts in the U.S. is likely less than 1000 but growing. Most of that acreage is in California, the Pacific Northwest, and Michigan.ven pecan production must be limited to the extreme south. However, based on the trials of small plantings and solitary trees and cultivars arising from those trials, filberts, chestnuts, and hardy English walnuts, with all their flaws, are the most likely candidates for commercial production Americas heartland.