Home > Timeline of scientific experiments

See also Timeline of scientific discoveries, Timeline of technological discoveries, List of timelines of Science and Technology, List of famous experiments.

• 240 BC - Eratosthenes measures the earth's circumference

• 16?? - Galileo Galilei use rolling balls to disprove the Aristotelian theory of motion
• 1609 - Galileo Galilei observes moons of Jupiter in support of the heliocentric model
• 1665 - Robert Hooke, using a microscopeA microscope is an instrument for viewing objects that are too small to be seen by the naked or unaided eye. The science of investigating small objects using such an instrument is called microscopy, and the term microscopic means minute or very small, not, observes cellstained for keratin The cell is the structural and functional unit of all living organisms. Some organisms, such as bacteria, are unicellular, consisting of a single cell. Other organisms, such as humans, are multicellular, (humans have an estimated 100,0s
• 1676Events January 29 Feodor III becomes Tsar of Russia First measurement of the speed of light, by Ole Romer Bacon's Rebellion Year in topic 1676 in literature 1676 in music 1676 in science Births May 8 Frederick I of Sweden Deaths July 22 Pope Clement X 167 - Ole RømerOle Christensen Romer ( September 25 1644 September 19 1710) was a Danish astronomer who made the first quantitative measurements of the speed of light ( 1676). Romer was born in Aarhus and died in Copenhagen. General biography Romer was employed by the F measures the speed of lightCherenkov effect in a "swimming pool" nuclear reactor. The effect is due to electrons moving faster than the speed at which light moves in water. The speed of light (denoted as c reputedly from the Latin celeritas "speed", and also known as Einstein's con for the first time.

• 1798Events February- October Irish Rebellion of 1798 April 7 The Mississippi Territory is organized from territory ceded by Georgia and South Carolina and is later twice expanded to include disputed territory claimed by both the U. and Spain April 26 France a - Henry CavendishHenry Cavendish ( October 10, 1731 February 24, 1810) was a British scientist. The grandson of the Second Duke of Devonshire, he attended Cambridge from 1749 to 1753 but left without taking a degree. He inherited a large fortune which enabled him to pursu: Torsion bar experimentIn physics, the purpose of the torsion bar experiment is to estimate the gravitational constant. The torsion bar experiment was originally proposed by John Michell, who constructed a torsion bar apparatus, but Michell died without completing the experimen to measure the gravitational constant
• 1796 - Edward Jenner tests the first vaccine

• 1801 - Thomas Young: double-slit experiment showing Wave-particle duality
• 1820 - Hans Christian Orsted discovers the connection of electricity and magnetism
• 1843 - James Prescott Joule measures the equivalence between mechanical work and heat, resulting in the Law of Conservation of energy
• 1845 - Christian Doppler demonstrates the Doppler Shift
• 1851 - Léon Foucault uses Foucault pendulum is to demonstrate the rotation of the earth
• 1861 - Louis Pasteur disproves the theory of Spontaneous generation
• 1863 - Gregor Mendel's pea plant experiments ( Mendel's Laws of inheritance)
• 1887 - Heinrich Hertz discovers the photoelectric effect
• 1887 - Michelson and Morley: Michelson-Morley experiment, showing that the speed of light is invariant
• 1896 - Henri Becquerel discovers radioactivity
• 1897 - Joseph John Thomson's discovers the electron

• 1909 - Robert Millikan: oil-drop experiment which suggests that electric charge occurs as quanta (the electron)
• 1911 - Ernest Rutherford's Gold foil experiment determines the shape of the atom
• 1911 - Onnes: Superconductivity
• 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
• 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 Brittain 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 Hersey & 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
• 1970 - Allan and Beatrice 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
• 2002 - Raymond Davis Jr. & Masatoshi Koshiba: detection of cosmic neutrinos, showing that neutrinos have a mass