Any list of the greatest thinkers in history contains the name of the brilliant physicist Albert Einstein. Histheories of relativity led to entirely new ways of thinking about time, space, matter, energy, and gravity. Einstein'swork led to such scientific advances as the control of atomic energy, even television as a practical application ofEinstein's work. In 1902 Einstein became an examiner in the Swiss patent office at Bern. In 1905, at age 26, hepublished the first of five major research papers. The first one provided a theory explaining Brownian movement,the zig-zag motion of microscopic particles in suspension. The second paper laid the foundation for the photon, orquantum, theory of light. In it he proposed that light is composed of separate packets of energy, called quanta orphotons, that have some of the properties of particles and some of the properties of waves. A third paper containedthe "special theory of relativity" which showed that time and motion are relative to the observer, if the speed oflight is constant and the natural laws are the same everywhere in the universe. The fourth paper was a mathematicaladdition to the special theory of relativity. Here Einstein presented his famous formula, E = m(cc), known as theenergy mass equivalence. In 1916, Einstein published his general theory of relativity. In it he proposed that gravityis not a force, but a curve in the space-time continuum, created by the presence of mass. Einstein spoke outfrequently against nationalism, theexaltingof one nation above all others. He opposed war and violence andsupported Zionism, the movement to establish a Jewish homeland in Palestine. When the Nazis came to power in1933, they denounced his ideas. He then moved to the United States. In 1939 Einstein learned that two Germanchemists had split the uranium atom. Einstein wrote to President Franklin D. Roosevelt warning him that thisscientific knowledge could lead to Germany developing an atomic bomb.He suggested the United States begin itsown atomic bomb research.Question 46:Einstein's primary work was in the area of “nội dung được trích dẫn từ 123doc.vn - cộng đồng mua bán chia sẻ tài liệu hàng đầu Việt Nam”
đang được dịch, vui lòng đợi..