Albert Einstein (1March 87914-1April 95 18), a world-famous German-American scientist, was the pioneer and founder of modern physics.
Einstein/Kloc-graduated from Zurich University of Technology in 0/900, and began to teach in this university in 0/909. 19 14 was the director of the Royal William Institute of Physics and a professor at the University of Berlin. Later, he was forced to immigrate to the United States and 1940 became an American citizen.
/kloc-the late 0/9th century is a period of change in physics. Einstein re-examined the basic concepts of physics from the experimental facts and made a fundamental breakthrough in theory. Some of his achievements greatly promoted the development of astronomy. His quantum theory has a great influence on astrophysics, especially theoretical astrophysics. The first mature aspect of theoretical astrophysics-stellar atmosphere theory is based on quantum theory and radiation theory. Einstein's special theory of relativity successfully revealed the relationship between energy and mass and solved the long-standing problem of stellar energy. In recent years, more and more high-energy physical phenomena have been discovered, and special relativity has become the basic theoretical tool to explain this phenomenon. His general theory of relativity also solved a mystery in astronomy for many years, and deduced the phenomenon of light bending that was later verified, which became the theoretical basis of many astronomical concepts later.
Einstein's greatest contribution to astronomy is his cosmology. He founded relativistic cosmology, established a static finite and infinite self-consistent dynamic universe model, and introduced new concepts such as cosmology principle and curved space, which greatly promoted the development of modern astronomy.
Chinese-American physicist Yang Zhenning (1922, 10. 1 ~) was born in Hefei, Anhui.
His father, Yang Wuzhi, is a doctor of mathematics at the University of Chicago. After returning to China, he served as the head of the Department of Mathematics in Tsinghua University and The National SouthWest Associated University for many years. Yang Zhenning 1942 graduated from The National SouthWest Associated University, and 1944 graduated from this school. After that, 1945 studied in the United States at public expense, studied at the University of Chicago, and obtained a doctorate. From 65438 to 0949, Yang Zhenning entered the Princeton Institute of Advanced Studies for postdoctoral research and began to cooperate with Li Zhengdao. The then principal said that his favorite scene was Yang and Li walking on Princeton lawn. After 1966, he taught at the State University of New York at Stony Brook for a long time and founded and presided over the Institute of Theoretical Physics. He is also a member of the American Academy of Sciences, a member of the Royal Society, a foreign academician of the China Academy of Sciences, and a professor at the Chinese University of Hong Kong.
Chinese name: Thomas Alva Edison.
British surname: Thomas Alva Edison.
World-famous American electrician and inventor, known as "the king of inventions in the world", has made more than 1000 inventions in his life. In addition to his inventions and contributions in phonograph, electric light, telephone, telegraph and film, he also has many famous creations and opinions in mining, architecture, chemical industry and other fields. Edison had about 2,000 inventions in his life, which made great contributions to the progress of human civilization.
Edison was also a great entrepreneur. 1879, Edison founded "Edison Electric Lighting Company". 1880, incandescent lamps went on sale. 1890, Edison merged its various businesses into Edison General Electric Company. 189 1 year, Edison's thin filament and high vacuum incandescent bulb were patented. 1892, Tom? 6? 1 Houston Company merged with Edison Electric Lighting Company to form General Electric Company. Opened the dominance of general electric in the electrical field for a century.
Alexander Graham Bell was born in Edinburgh, Scotland on March 3, 1987, and received primary education there. Bell's main achievement was the invention of the telephone. In addition, he also made hearing AIDS; Improved the phonograph invented by Edison; He made great contributions to the invention of deaf-mute language; He wrote 100 articles and pamphlets. From 1875 to 1922, he obtained 30 patents from the US government. Because of these many inventions, Bell won the centennial award certificate of the Philadelphia World Expo in 1876, and in the same year, he also received a doctorate in science from Boston University. The following year, he won the Voltaire Prize of 50,000 francs and became a member of the French Legion of Honor. To commemorate Bell's achievements, the unit for measuring the ratio of power or power density in electricity and acoustics was named Bell.
There are so many telephone providers now, but it is thanks to alexander bell that Bell Telephone Company, the first (and most powerful) telephone company in the world, was created. Bell is not only a single genius, his research ideas involve air conditioning (in fact, he built the original air conditioning system in his room), hydrofoil and the concept of magnetic storage information (which led to an unprecedented innovative invention-computer).
Alexander bell was also the inventor of the world's first metal detector. He assembled this device to find the bullet in President james garfield's body. As a result, the detector did work, but the position of the bullet could not be determined because President Garfield was lying on a metal shelf during the inspection.