The gravitational time. The time is a motion. We would like to invite you to turn towards to other motion than hands motion on watch. We will select the incidence of material dot in constant gravitational field as basic. A length this passed way is gravitational time. That motion is unequal in length. Compare gravitational time with celestial time. Relatively to gravitational time hands watches on our hand are going unequally. By way of illustration, the train movement at thirty miles per hour is unequally too. The gravitational time has been the right to exist likely the celestial time. The celestial time is using in science and life everywhere. It is more convenient than gravitational time. The gravitational time is more inconvenient. If use gravitational times all physical formulas will have been more compounded aspects. There will be more sophisticated and more distinguished aspects for different latitudes. The physical time in classical mechanics is interpretation of single measured and uniform space. In that time an interval between two moments of time is invariant value. In gravitational time this is an impracticable scheme. The stretches of gravitational time are differed. The gravitational time resembles with free fall into abyss of precipitous intense desire. The gravitational time resembles with forced free incidence into chasm fiery volcano contrary to our expectations. The self-preservation instinct can be being switched on or switched off. There are set of psychological facts about accelerated and retarded time receptions. Acceleration has been had opposite plus/minus sign. The sings in mathematics are not been fortuitous too. The gravitational time can be very productive and wholesome in science. Particularly still in psychology. See more: http://www.ap.org.ru/eng/n-letter.htm