大英1第四单元讲义.ppt

(L34) E=mc2 质能方程 Einstein’s special theory of relativity proposes, among other things, that the maximum speed possible in the universe is that of light; that mass appears to increase with speed; that the rate of a clock moving through space will decrease as its speed increases; and that energy and mass are equal and interchangeable. The last point was expressed in the famous formula E=mc2 (energy equals mass times the square of speed of light) and was later proved by atomic fission. * The Nobel Prize Nobel Prizes are annual monetary awards granted to individuals or institutions for outstanding contributions in the fields of physics, chemistry, physiology or medicine, literature, international peace, and economic sciences. Nobel Prizes are internationally recognized as the most prestigious awards in each of these fields. The prizes were established by Swedish inventor and industrialist Alfred Bernhard Nobel, who set up a fund for them in his will. The first Nobel Prizes were awarded on December 10, 1901, the fifth anniversary of Nobel’s death. * (L50) take apart : separate (sth.) into parts 拆开 The professor spent the whole afternoon taking apart his old car. Nick took apart the clock and spread the bits all over the carpet. * Unit Four The Professor and The Yo-Yo Background information Text analysis language points Review, exercises supplementary materials Summary * Albert Einstein(1879-1955) A. Einstein is one of the greatest theoretical physicists of all time. He is best known for his theory of relativity, which he first advanced in 1905 when he was only 25. In 1921 Einstein won the Nobel Prize in physics primarily for his pioneer work in photoelectric theory. Einstein is one of the few scientists whose work has helped change man’s view of the world. During the first half of this century Einstein set forth a number of theories about the physical world. These theories