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.
The sweet chestnut is the delicious, edible chestnut that most people are familiar with around the holidays. An edible chestnut is easiest to spot if it is still in its husk, which is spiny and needle-sharp.The toxic, inedible chestnut, also called the horse chestnut, has a husk that is much smoother, with only a few warts. Horse chestnuts are the ones commonly found in forests and backyards.hestnuts can be a nutritious and delicious fall and winter treat. They can be boiled, steamed and, of course, roasted over an open fire. But some chestnuts are toxic and definitely not for eating.