"Heaven! So small, you can just put him into the cup!" Surprisingly, the little life surprised to make a small life. At this time, it happened to Christmas in the early morning of Christmas, the British Lincoln County Walsop Village is a big bell, "Hey! Hey!" The bell summoned the devout villager to go to Wrap. The premature boy fell to the world with the bells of the teaching, his crying is so weak, and the weight is only half of the normal baby. Especially unfortunately, the baby's father died in his months before his birth. For the thoughts of death, the mother gave the baby the same name as his father - Izak Newton. This hardship is obviously insufficient, and his relatives see him and weak, and they are worried that he can't grow up. Unexpectedly, this baby is not only lived, but actually lives to 85 years old; more importantly, he became a scientific giant. In 1665, the 23-year-old Newton University graduated, stayed in college research room. However, in June this year, the mouse is popular, the school is forced to suspend the class, Newton returns to the village of Wals Sop Village, Hometown. Newton's stay here is two years. This is an extremely glorious two years in the history of modern science. Newton has been giving a mystery that I have encountered in the university study during the country's life. His full heart has been occupied by the reasons of the object. In ancient Greece, people sequentially divide the movements of the movements: sports, falling movements and mutual motion on the ground. Aristotle has explained the reason for the three types of sports. He believes that it is the reason for the objective movement on the ground; the earth is the center of the universe, so the fall is different to the earth; the might is different from the ground object, their special nature They protect the eternal movement. Newton knows that Galileo made a negative conclusion to the first two explanations of Aristotle, but the theory of Aristotle's star movement is wrong? Copernico puts forward the earth around the day; Copple has found the law of the planet operation; Galileo proves the operation of the planet. But why do they run like that? No one has made a clear answer. In order to understand this mystery, Newton has passed the book about the celestial operation, but only found a near-fantasy in the science, the almost fantasy of the foot: Ancient Greeks believe that there is an extraction; Coperni said "the gravity is according to the gravity God's will, given natural attributes of the substances "; Cople said that" the moon is indexed by the earth; the moon also attracts the sea water on the earth. From the sun, there is a huge hand that is invisible to see a naked eye. Planets, pulling these planets together with the sun. " Is it true that the celestial operation is really an extravagant effect? So what is the gravity? Newton has been thinking about these problems. One evening, Pensive Newton's consciously walked to the appleland of the backyard. In the garden, the apple tree is full of mature apples, and the air is full of fruity in the air. In this, Newton is complete. Suddenly, "Bar", a ripe apple on the tree is blown on the ground. Newton's idea jump: 咦! Why is Apple? Is it the attraction of the earth attracting it? ! Newton immediately conducted Lenovo: a person standing on the cliff, putting a stone gently, the stone will fall on the ground; if he uses more power, the stone will come further; When it is large enough, this stone will no longer fall to the ground, but rotate around the earth; if the earth is not gravitated, this stone will go straight to the direction he thrown.