Timeline Of Scientific Experiments
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Timeline of Scientific Experiments
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. (December 2009)
The timeline below shows the date of publication of major scientific experiments:
See also timeline of scientific discoveries, timeline of historic inventions, list of timelines of science and technology, list of famous experiments, timeline of the history of scientific method.
2nd century BC
240 BC - Eratosthenes measures the Earth's circumference and diameter.
8th century AD
- 1909 - Robert Millikan: oil-drop experiment which suggests that electric charge occurs as quanta (the electron).
- 1911 - Ernest Rutherford's gold foil experiment determines that atoms are mostly empty space, and that the core of each atom, which he named the atomic nucleus, is dense and positively charged
- 1911 - Heike Kamerlingh Onnes: superconductivity.
- 1914 - James Franck and Gustav Ludwig Hertz conduct the Franck-Hertz experiment demonstrating quantization of atomic ionization energy.
- 1919 - Arthur Eddington: Our sun as gravitational lens, a proof of the theory of relativity.
- 1920 - Otto Stern and Walter Gerlach conduct the Stern-Gerlach experiment, which demonstrates particle spin.
- 1920 - John B. Watson and Rosalie Rayner conduct the Little Albert experiment.
- 1928 - Griffith's experiment shows that living cells can be transformed via a transforming principle, later discovered to be DNA.
- 1934 - Enrico Fermi splits the atom.
- 1935 - Lady tasting tea experiment by Ronald A. Fisher, foundational in statistical hypothesis testing.
- 1940 - Karl von Frisch decodes the "dance" honeybees use to communicate the location of flowers.
- 1944 - Barbara McClintock breeds maize plants for color, which leads to the discovery of jumping genes.
- 1947 - John Bardeen and Walter Brattain fabricate the first working transistor.
- 1951 - Solomon Asch shows how group pressure can persuade an individual to conform to an obviously wrong opinion.
- 1952 - Alfred Hershey & Martha Chase: Hershey-Chase experiment proves that DNA is the hereditary material .
- 1953 - Stanley L. Miller & Harold C. Urey: Miller-Urey experiment demonstrates that organic compounds can arise spontaneously from inorganic ones.
- 1955 - Clyde L. Cowan and Frederick Reines confirm the existence of the neutrino in the neutrino experiment.
- 1958 - Meselson-Stahl experiment proves that DNA replication is semiconservative.
- 1960 - B. F. Skinner's demonstrations of operant conditioning.
- 1961 - Crick, Brenner et al. experiment.
- 1961 - Nirenberg and Matthaei experiment.
- 1964 - Nirenberg and Leder experiment.
- 1965 - Arno Penzias, Robert Wilson: Cosmic microwave background radiation, evidence of the Big Bang.
- 1967 - Kerim Kerimov launches the Cosmos 186 and Cosmos 188 as experiments on automatic docking eventually leading to the development of space stations.
- 1970 - Allan and Beatrix Gardner teach American Sign Language to the chimpanzee Washoe.
- 1974 - Stanley Milgram: Milgram experiment on obedience to authority.
- 1995 - Eric A. Cornell and Carl E. Wieman synthesize Bose-Einstein condensate.