Traditional Culture Encyclopedia - Photography and portraiture - What are the great inventions and discoveries in history?
What are the great inventions and discoveries in history?
Chronology of scientific achievements in the 20th century
Late 19th to early 20th century: Madame Curie, who studied the natural radioactivity of elements and discovered polonium and radium
1897 Year: Joseph Thomson discovered the electron
1900: December 14, Planck proposed the concept of quantum for the first time, which is regarded as the birth date of quantum mechanics
1903 Year: The airplane built by the Wright brothers took off in the United States
1905: Einstein proposed the special theory of relativity
1911: Rutherford discovered that an atom is composed of a nucleus and surrounding electrons Composed
1911: Heike Kamerling Onnes discovered the phenomenon of superconductivity
1912: Wegener published the theory of continental drift
1916: Einstein proposed the general theory of relativity
1917: Rutherford gradually discovered the hydrogen nucleus and (1919) the proton through alpha particles
1919: The advent of radio stations< /p>
1922: American astronomer Edwin Hubble announced that each galaxy is composed of millions of stars
1924: Soviet Russian Alexander Obalin published that biology is Slowly evolving from inorganic to organic organisms
1925: John Baird invented the first television
1926: Schr?dinger proposed the Schr?dinger equation.
1926: Robert Goddard of the United States launches the first liquid rocket (60 feet)
1928: George Gammo - discovers that solar energy is produced by the conversion of hydrogen into helium Energy generated (nuclear fusion) [source request]
1930: The advent of the electron microscope
1931-1960[edit]
1932: Chadwick discovered the neutron
1934: Fermi of Italy discovered the phenomenon of nuclear reactions
1935: Carothers invented nylon
1935: Hide Yukawa Shu proposed the first important theory of the strong interaction between nuclei
1937: Peter Kapitsa discovered superfluids.
Later, Landau gave a theoretical explanation in 1940
1940: The birth of laser (laser) technology
1940: The experiment of stereoscopic photography began
1942 Year: The first atomic reactor was completed in the United States
1944: The first computer was born
1945: The United States launched the first atomic bomb, and the world saw the power of atomic energy Huge power
1947: December 23, William Shockley, John Bardeen and others created the world's first transistor
1948: Feynman and others Proposes quantum electrodynamics
Late 1940s: Robert Burns Woodward completes a series of total syntheses, including reserpine and strychnine
1952: United States Launched the first nuclear fusion bomb (hydrogen bomb), 500 times more powerful than the missile dropped on Hiroshima
1953: James Watson of the United States and Francis Crick of the United Kingdom discovered DNA ( Double helix structure of DNA
1956: Li Zhengdao and Yang Zhenning published the paper "Questioning Parity Conservation in Weak Interactions"
1957: Soviet Russia launched the world's first The first artificial satellite
1959: Soviet space probe ─ takes the first photo on the moon
1961-1999[edit]
1961 Year: U.S. Mariner 2 reaches Venus
1961: Mariner 4 passes by Mars
1964: Cosmic 3K background radiation is discovered
1967: South African Surgery Dr. Barnard's First Heart Surgery Transplant
1967: Jocelyn Bell and Anthony Hewish discovered the regular pulses of pulsars while examining signals received by radio telescopes ,
1969: Apollo 11 mission - Neil Armstrong and Birds Aldrin were the first people to set foot on the moon
1973: The Fragments of ribonucleic acid (DNA) - inserted into genetic viruses and bacteria
1973: Kobayashi Makoto and Masukawa Toshihide experimentally observed CP destruction and proposed two new quarks, top quarks and bottom quarks; The number of quark flavors increased to six
1978: British scientists created test-tube babies
1983: Kelly Mullis invented the polymerase chain reaction method
1986: Carl Miller and Johannes Bednorz discovered (copper oxide) high-temperature superconductors
1995; Fermilab discovered the top quark; so far all six flavor quarks have been discovered< /p>
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