1800: William Herschel, infrared rays from the Sun
1801: Johann Ritter, Ultraviolet rays
1801: Johann von Soldner, predicted Newtonian bending of light by sun
1801: Giuseppe Piazzi, first asteroid Ceres
1801: Humphry Davy, Electric arc
1801: Andres Manuel del Rio, compounds of element vanadium
1801: Charles Hatchett, element niobium in ores
1802: Heinrich Olbers, second asteroid Pallas
1802: Anders Ekeberg, element tantalum
1802: William Wollaston, dark lines in solar spectrum
1802: William Herschel, double stars are bodies in mutual orbit
1802: Thomas Young, interference and wave description of light
1802: Humphry Davy, Electrochemistry
1802: Joseph Gay-Lussac, Relation of Volume to Temperature of gases at fixed pressure
1803: William Wollaston, elements rhodium and palladium
1803: Smithson Tennant, elements osmium and iridium
1804: John Dalton, Law of partial pressures, Dalton's law
1807: Humphry Davy, isolation of elements sodium and potasium
1808: Humphry Davy, isolation of elements magnesium, strontium, barium and calcium
1808: Davy, Gay-Lussac and Thenard, isloation of element boron
1808: Joseph Gay-Lussac, Law of gas volumes in chemical reactions
1808: John Dalton, atomic theory of chemical reactions
1808: Etienne Malus, polarisation of reflected light
1809: Simeon-Denis Poisson, Poisson brackets in mechanics
1811: Amedeo Avogadro, molecular theory of gases and Avogadro's law
1811: Jean-Baptiste Fourier, harmonic analysis
1811: Bernard Courtois, element iodine
1812: David Brewster, behaviour of polarised light
1814: Joseph von Fraunhofer, spectroscope
1815: William Prout, atomic weights of elements are multiples of that for hydrogen
1815: Augustin Fresnel, theory of light diffraction
1816: Joseph von Fraunhofer, absorption lines in sun's spectrum
1817: Young and Fresnel, transverse nature of light
1817: Johan Arfvedson, element lithium
1817: Friedrich Strohmeyer, element cadmium
1817: Jöautns Berzelius, element selenium
1818: Augustin Fresnel, ether as absolute rest frame
1819: Dulong and Petit, relation of specific heats to atomic weight in 12 solid elements
1820: Andre Ampere, force on an electric current in a magnetic field
1820: Hans Christian Oersted, an electric current deflects a magnetised needle
1820: Biot and Savart, force law between an electric current and a magnetic field
1821: Thomas Seebeck, thermocouple and thermoelectricity
1821: Joseph von Fraunhofer, diffraction grating
 Michael Faraday |
1821: Michael Faraday, first electric motor
1822: Andre Ampere, two wires with electric currents attract
1822: Charles Babbage, a prototype calculating machine
1822: Mary Mantell, first dinosaur fossil
1823: Michael Faraday, liquifies chlorine
1823: John William Herschel, suggests identification of chemical composition from spectrum
1823: William Sturgeon, electromagnets
1823: Heinrich Olbers, why is the sky dark?
1823: Johann Schweigger, galvanometer
1824: Sadi Carnot, Heat transfer goes from hot body to cold body
1824: Jöautns Berzelius , element silicon
1824: Jöautns Berzelius , isolation of element zirconium
1825: Hans Christian Oersted, isolation of element aluminium
1826: Antoine-J. Balard, element bromine
1827: Georg Ohm, electrical resistance and Ohm's law
1827: Robert Brown, Brownian motion
1828: Friedrich Wohler, isolation of element yttrium
1829: Johann Wolfgang, triads of chemical elements
1829: Thomas Graham, gas diffusion law
1829: Jons Berzelius, element thorium
1830: Charles Lyell, proposition that Earth is several million years old
1830: Nils Sefstrom, rediscovery and naming of vanadium
1831: Michael Faraday, a moving magnet induces an electric current
1831: Michael Faraday, magnetic lines of force
1831: Michael Faraday, the electric dynamo
1831: Michael Faraday, the electric transformer
1833: Michael Faraday, laws of electrolysis
1833: Joseph Henry, self inductance
1834: Emile Clapeyron, entropy
1834: John Scott Russell, observed solitary waves in a canal
1834: William Hamilton, Principle of least action and Hamiltonian mechanics
1834: Heinrich Lenz, Law of electromagnetic forces
1835: Gustav-Gaspard Coriolis, Coriolis force
1838: Bessel, Henderson, Struve, first measurements of distance to a star by parallax
1839: Karl Mosander, Lanthanum
1840: Rive Marcet anomolous specific heat of diamond
1840: Joule and Helmholtz electricity is a form of energy
1840: Auguste Comte suggests that nature and composition of stars will never be known
1841: Eugene-Melchoir Peligot isolation of element uranium
1842: Christian Doppler theory of Doppler Effect for sound and light
1842: Justin von Mayer Conservation of heat and mechanical energy
1843: James Joule mechanical and electrical equivalent of heat
1843: Howard Aiken first mechanical programable calculator
1844: Kark Klaus element 44, ruthenium
1845: Michael Faraday, rotation of polarised light by magnetism
1845: Christopher Buys-Ballet, confirmation of Doppler effect for sound using trumpeters on a train
1846: Adams, Le Verrier, predicted position of Neptune
1846: Gustav Kirchhoff, Kirchoff's laws of electrical networks
1846: William Thomson (Kelvin), Incorrectly estimates Earth to be 100 million years old by heat
1846: Jahanne Galle, Neptune
1847: Hermann von Helmholtz, conservation of energy in Newtionian mechanics and gravity
1848: William Thomson (Kelvin), absolute temperature scale
1848: James Joule average velocity of gas molecules from kinetic theory
1849: Armand Fizeau first accurate measurement of the velocity of light in the laboratory using a toothed wheel
1850: Rudolf Clausius, generalised second law of thermodynamics
1850: Jean Foucault, light travels slower in water than in air
1850: Michael Faraday, experiments to find link between gravity and electromagnetism fail
1851: William Thomson (Lord Kelvin), dynamical theory of heat
1851: William Thomson (Lord Kelvin), absolute zero temperature
1851: Armand Fizeau, velocity of light in moving medium
1851: Franz Neumann, laws of electric-magnetic induction
1851: Jean Foucault, demonstrates rotation of Earth with a pendulum
1852: Jean Foucault, first gyroscope
1852: Joule, Thomson, an expanding gas cools
1853: Anders Angstrom, measured hydrogen spectral lines
1854: Hermann von Helmholtz, Heat death of the universe
1854: Bernhard Riemann, possibility of space curvature on small or large scales
1854: George Airy, Estimate of Earth mass from underground gravity
1855: William Parsons, spiral galaxies
1855: James Clerk Maxwell, mathematics of Faraday's lines of force
1857: James Clerk Maxwell, nature of Saturn's rings
1858: Wallace and Darwin, natural selection of species
1858: Balfour Stewart, conjecture equivalent to Kirchoff's law
1859: Hittorf and Plucker, cathode rays
1859: Bunsen and Kirchhoff, measurement of spectral line frequencies
1859: Urbain Le Verrier, anomolous perihelion shift of Mercury
1860: Gustav Kirchhoff, Kirchoff's Law and black body problem
1860: Maxwell and Waterston, equipartition theorem of statistical mechanics
1861: von Bunsen, Kirchhoff, elements caesium and rubidium found in spectra
1861: William Crookes, element thallium found by its spectra
1861: Johann Madler, Olbers's paradox would be resolved if the universe had a finite age
1862: Anders Angstrom, observed hydrogen in the sun
1863: William Huggins, stellar spectra indicate that stars are made of same elements as found on Earth
1863: Reich, Richter, element indium from its spectra
1864: John Newlands, chemical law of octaves
1864: James Clerk Maxwell, equations of electromagnetic wave propagation in the ether
1865: Rudolf Clausius, introduction of the term entropy
1867: James Clerk Maxwell, statistical physics and thermal equilibrium
1867: Henry Roscoe, isolation of element vanadium
1868: Pierre-Jules Janssen, lines of helium observed in the sun's spectrum
1868: Lockyer, Crookes, element helium recognised and named
1868: William Huggins, Doppler shifts of stellar spectra
1869: Dmitri Mendeleyev, periodic table of elements
1871: Dmitri Mendeleyev, prediction of new elements such as scandium, germanium, technetium, francium and gallium
1871: Ludwig Boltzmann, classical explanation of Dulong-Petit specific heats
1871: Tyndall and Rayleigh, light scattering and why the sky is blue.
1872: Ludwig Boltzmann, H-theorem
1873: James Clerk Maxwell, electromagnetic nature of light and prediction of radio waves
1873: Johannes van der Waals, intermolecular forces in fluids
1874: George Stoney, estimated the unit of charge and named it the electron
1875: Heinrich Weber, specific heat curves of solids
1875: James Clerk Maxwell, atoms must have a structure
1875: Paul-Emile Lecoq de Boisbaudran, element gallium
1877: Johann Loschmidt, questions validity of second law for time symmetric dynamics
1877: Ludwig Boltzmann, Boltzmann's probability equation for entropy
1877: Asaph Hall, two moons of Mars
1877: Cailletet and Pictet, liquid oxygen and nitrogen
1878: Josiah Willard Gibbs, thermodynamics of chemistry and phase changes
1879: Josef Stefan, empirical discovery of total radiation law, (Stefan's law)
1879: Lars Fredrik Nilson, element scandium
1879: Willaim Crookes, cathode rays may be negatively charged particles
1879: Albert Michelson, improved measurements of the speed of light
1880: Pierre and Jacques Curie, piezoelectricity
1881: Albert Michelson, light interferometer and absence of ether drift
1881: Josiah Willard Gibbs, vector algebra
1883: Ivan Puluy, prior discovery of X-rays
1883: Thomas Edison, thermionic emission
1883: George Fitzgerald, theory of radio transmission
1884: Ludwig Boltzmann, Derivation of Stefan's law for black bodies
1885: Johann Balmer, empirical formula for hydrogen spectral lines
1885: James Dewar, vacuum flask
1886: Henri Moissan, fluorine
1886: Clemens Winkler, element germanium
1887: Heinrich Hertz, transmission, reception and reflection of radio waves
1887: Michelson and Morley, absence of ether drift
1887: Michelson and Morley, fine structure of hydrogen spectrum
1887: Hertz, Hallwachs, photoelectric effect
1887: Woldemar Voigt, anticipated Lorentz transform to derive Doppler shift
1889: George Fitzgerald, length contraction
1889: Rolond von Eotvos, torsion balance to test equivalence of inertial and gravitational mass
1890: Johannes Rydberg, empirical formulae for spectral lines and Rydberg constant
1892: Hendrick Lorentz, theory that electricity is due to charged particles
1893: Ernst Mach, influence of all the mass in the universe determines what is natural motion
1893: Wilhelm Wien, derivation of black body displacement law
1893: Oliver Lodge, ether could not be carried along by matter
1894: Rayleigh and Ramsey, element argon
1894: Heinrich Hertz, radio waves travel at speed of light and can be refracted and polarised
1894: James Dewar, liquid oxygen
1894: Pierre Curie, why are there no magnetic monopoles?
1895:
1895: Wilhelm Roentgen, X-rays
1895: Korteweg and de Vries, Explanation of solitary waves
1895: Jean-Baptiste Perrin, Cathode rays are negative particles
1895: Pierre Curie, loss of magnetism at high temperature, (Curie point)
1895: Hendrick Lorentz, first form of Lorentz transformation
1895: Hendrick Lorentz, Electromagnetic force on a charged particle
1896: Wilhelm Wien, conjectured exponential black body law
1896: Pieter Zeeman, spectral line splitting by magnetic field
1896: Antoine Henri Becquerel, natural radioactivity in uranium ore
1897: Ludwig Boltzmann, time reversal symmetry of electromagnetism
1897: Friedrich Paschen, verification of Wien's black body law at long wavelengths
1897: Kaufmann, J.J. Thomson, measurement of electron charge to mass ratio by deflection of cathode rays
1897: Weichert, J.J. Thomson, conjectured existence of light electron
1898: James Dewar, liquid hydrogen
1898: Guglielmo Marconi, Transmission of signals across the English channel
1898: Pierre and Marie Curie, separation of radioactive elements, radium and polonium
1898: Ramsey and Travers, neon, krypton, xenon
1898: Joseph Larmor, complete form of Lorentz transformation
1898: Henri Poincare, questions absolute time and simultaniety
1898: Ernest Rutherford, alpha and beta radiation
1899: Joseph John Thomson, measurement of the charge and mass of the electron
1899: Andre Debierne, element actinium
1899: Max Planck, universal scale of measurment from fundamental constants
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