Apples are rich in minerals and vitamins and are one of the most commonly eaten fruits. The fruit growth period can be divided into different lengths. Generally, the early maturing varieties are 65-87 days, the medium maturing varieties are 90-133 days, and the late maturing varieties are 137-168 days. In general, apple trees can have a life span of 15-50 years after planting.
Apple is native to eastern Turkey. The main varieties come from Begonia (there are hundreds of varieties), one of which is short branch type - a dwarf compound variety cultivated to improve fecundity. China, the United States and France are the leading apple producing countries (tons), while France, Italy, the United States and Turkey are the leaders in per unit yield (tons / HA).
For a long time, Newton believed that there must be a mysterious force that pulls the planets in the solar system around the sun. But what kind of force is this. Until one day, when Newton was thinking under the apple tree in the garden and an apple fell at his feet, Newton finally got an epiphany, and his problem was gradually solved.
It is said that in the autumn of 1665, Newton sat under the apple tree in his yard and thought hard about the reason why the planet moved around the sun. At this time, an apple happened to fall, and it fell at Newton's feet. This is a moment of discovery. This apple fall is different from countless previous apple falls because it attracted Newton's attention. Newton found the reason for the fall of the apple from the natural phenomenon of the apple falling - the action of gravity. This invisible force from the earth pulled the apple down, just as the earth pulled the moon and made the moon move around the earth.
This story has been spread after Newton's niece Mrs. Barton told the French philosopher and writer Voltaire. Voltaire wrote it in the principles of Newton's philosophy. The apple tree from Newton's hometown was later transplanted to Cambridge University. After Newton's death, he was regarded as a hero who discovered the laws of the universe, and then given legend. The story of Newton and apple was widely spread.
