Abstract

Three hundred years ago the great scientist Isaac Newton formulated the law of universal gravitation, which explained the falling of bodies: . Since then, many scientists have attempted to interpret the law of universal gravitation, trying to answer the question ?Why does the attraction between masses occur??. The lack of success in answering the question can be explained by several causes: 1) Prior to the 20th century discovery of quantum mechanics, attempts to interpret the law by methods of classical mechanics were doomed; 2) Attempts to treat this law as something exceptional are also not justified, as there is nothing exceptional in Nature; 3) Attempts to oversimplify the approach to this problem have been doomed to failure. Today the problem remains both challenging and tempting. Would it be possible to overcome gravity? If so, this would constitute a new era for mankind. However, this question should follow after others. First, what is gravity? And only having understood its nature, one may ask, Is it possible? and How? The present work proceeds from the notion of unity of natural phenomena. Slight interaction, by virtue of natural similarity, must resemble the exchange interaction. But what the masses exchange has remained a puzzle. Many scientists believe the answer is gravitons. But what is a graviton? And why do we fail to register this particle? Having tried a lot of options, I decided on analyzing one of the issues from quantum mechanics, namely the problem of two states: upward spin and downward spin. I will try to explain why in the paper. I have found much in common between the notion of two states and physics of slight interactions.