Топ-100 ★ Free online encyclopedia. Did you know? page 230

★ Free online encyclopedia. Did you know? page 230


1792 in science

The Xaver, Baron von Zach publishes tables of the Sun, the instrumental work to improve navigation. The first Royal astronomer of Ireland appointed: position aligned with the position of Director of the Dunsink Observatory in Dublin.


1793 in science

October 24 – the French Republican calendar, developed by Gilbert Romm, adopted by the National Assembly. August 8 – the French Academy of Sciences among the academies suppressed by the National Assembly.


1795 in science

April 7 – gram decreed in France, should be equal to "the absolute weight of a volume of water equal to the cube of the hundredth part of the meter at the temperature of melting ice.".


1797 in science

Smithson Tennant shows that the diamond is pure form of carbon. Louis Nicolas Vauquelin discovers chromium. Joseph Proust proposes the law of definite proportions, which States that elements combine in small, whole number ratios to form compounds.


1799 in science

July 15 – in the Egyptian city of Port Rashid Rosetta, French captain Pierre Bouchard finds the Rosetta stone, which became the key to deciphering ancient Egyptian hieroglyphic writing. July 25 – the battle of Abukir in Egypt, Napoleon Bonaparte ...


1802 in science

May 6 – coins William Herschel asteroid and term of July 1, for the first time uses the term double star to indicate the star, which revolves around the other. March 28 – W. Olbers discovers the asteroid Pallas, the second known.


1803 in science

Publication posthumously Andre Michauxs Flora Boreali-Americana in Paris, the first flora of North America. University of Tartu Botanical garden created.


1805 in science

Marie Jules césar Savigny publishes stories Naturelle Et mythologique de libis in Paris, the first illustrated monograph on the IBIS. Jean-Henri pulp Saint-Hilaire publishes the exposition des families naturelles et de La germination de Plantes, ...


1807 in science

Geological society, founded in London, among the most famous of the founders of William Babington, James Parkinson, Humphry Davy and George Bellas Grino.


1809 in science

Carl Friedrich Gauss publishes Theoria Motus corporum TWAIN in sectionibus conicis merge ambientum in Hamburg, introducing Gaussian gravitational constant and containing an influential treatment of the method of least squares. S. D. Poisson publi ...


1811 in science

Johann Karl Wilhelm Illiger publishes Prodromus systematis mammalium Et avium, a taxonomy of the Linnaean and a great influence on the concept of the family in biology. First, he defines the infraclass Marsupialia. Peter Simon Pallas begins publi ...


1815 in science

April 5 – the eruption of the volcano mount Tambora on the Indonesian island of Sumbawa. Approximately 92.000 people die as a direct result of this disaster, the largest volcanic eruption in human history. The eruption sends so much volcanic ash ...


1816 in science

Rene Laennec invented the stethoscope. Caleb parry publishes experimental research about the nature, causes and varieties of the arterial pulse, describing the mechanisms of the pulse.


1817 in science

Leopold Gmelin begins the publication of his Handbuch der theoretischen Chemie. The Discovery Of Selenium Jöns Jacob Berzelius. The discovery of cadmium Friedrich Strohmeyer122. Pierre-Joseph Pelletier and Joseph Bienaime Caventou isolate chlorop ...


1818 in science

Jean city is preparing a report to call for the expansion of medicalization in the treatment of insanity in France. 25 September – in London, Dr James Blundell performs the first blood transfusion using human blood. Carl Ferdinand von Graefe publ ...


1819 in science

July 1 – Johann Georg Trully discovers the Great comet of 1819, C / 1819 N1. This is the first Comet analyzed using polarimetry, Francois Arago. Johann Franz Encke calculates the orbit of comet Encke, who defined it as a periodic.


1820 in science

Christian Friedrich Nasse formulates Nasses law: hemophilia occurs only in males and is transmitted by asymptomatic women. Land reserved for the construction of the Botanical garden in Washington, D.C.


1822 in science

Jean Baptiste Julien dOmalius dHalloy defines the Cretaceous period. It also offers Jurassic. John Phillips and William Conybeare identify the Carboniferous period. Georges Cuvier establishes new standards and methods in stratigraphy and paleonto ...


1823 in science

Cambridge Observatory, created in England. December 29 – the Great comet in 1823 for the first time observed. Olbers paradox, described by the German astronomer Olbers Heinrich Wilhelm Matth? us.


1824 in science

Franz von Gruithuisen explains the formation of craters on the moon are the result of meteorite impact. William Pearson publishes an introduction to practical astronomy.


1825 in science

Pierre-Simon Laplace completes his study of gravitation, the stability of the Solar system, the tides, the precession of the equinoxes, the libration of the moon and Saturns rings in the publication of the fifth and final volume of mechanisms Cel ...


1828 in science

Karl Ernst von Baer laid the foundations of the science of comparative embryology with his book Uber Entwickelungsgeschichte Der Thiere. He published the laws of von Baer. April 27 – London zoo in Regents Park opens for members of the Zoological ...


1831 in science

March 7 – Royal astronomical society receives a Royal Charter. Mary Somerville translates mechanisms Laplaces Celeste as the mechanism of the heavens. Heinrich Schwabe makes the first detailed drawing of the Great red Spot on Jupiter. January 7 – ...


1834 in science

March 14 – John Herschel discovers the open cluster of stars now known as NGC 3603. Johann Heinrich von Madler and Wilhelm beer to publish Mappa Selenographica, the most complete map of the moon at this time. Thomas Henderson was appointed the fi ...


1835 in science

Caroline Herschel and Mary Somerville became the first female member of the Royal astronomical society. August 25 – the first of six articles about the discoveries of living creatures on the moon supposedly made by Herschel and fictitious compani ...


1837 in science

March–July – Charles Darwin begins privately to develop his theory of transmutation of species. November 6 – the creation of the Park in Boston, Massachusetts, as the Botanical garden, the first in the United States will be open to the public.


1838 in science

Peter Andreas Hansen publishes a revision of the lunar theory, Foundation of Nova investigationis orbitae verae Quam Luna perlustrat. Friedrich Wilhelm Bessel makes the first accurate measurement of the distance to the star 61 Cygnus, using paral ...


1840 in science

William Whewell publishes the philosophy of the inductive Sciences, representing scientists, the conditions for the second time, and a physicist. Justus von Liebig publishes die Organische Chemie in Anwendung jireh agricultur Auf UND Physiologie ...


1843 in science

April 5 February 19 – "the Great March comet" was observed. 11-14 March – This Keel of the rocket to become the second star. Heinrich Schwabe reports a periodic change in the number of sunspots: they wax and wane in the amount of ten-year cycle.


1845 in science

August 28 – the journal "scientific American" begins publication. Alexander von Humboldts Kosmos: Entwurf einer physischen Weltbeschreibung begins publication. January 14 – Physikalische-Gesellschaft Berlin created and starts publishing Fortschri ...


1846 in science

February 20 – Francesco de Vico discovers the first comet 122p / de Vico. August 31 – Urbain Le Verrier publishes full information about the Orbit and mass of the new planet. October 10 – William Lassell discovers Triton, the largest moon of Nept ...


1849 in science

Edouard Roche finds the limiting radius of tidal destruction and creation for a body held together only by its own gravity, called the Roche limit, and uses it to explain why Saturns rings is not turned into a Satellite.


1850 in science

Rewilding ascension begins. (Rewilding восхождения начинается) 25 may – young Hippopotamous Obaysch arrives at London zoo from Egypt, the first seen in Europe since the Roman Empire.


1852 in science

The latter admit that they have seen many AUK, on the Grand banks of Newfoundland. October 5 – American beekeeper L. L. Langstroth patent hive-lounger for the cultivation of bees.


1853 in science

Anton de Bary publishes the first study showing that the rust and smut fungi cause diseases of plants. March 17 – Claude Bernard presented his doctoral thesis describing the glycogenetic function of the liver.


1855 in science

Robert REMAK publishes Untersuchungen Uber die Entwickelung Der Wirbelthiere in Berlin, providing evidence for cell division that is supported but not recognized by Rudolf Virchow. September – Alfred Russell Wallace publishes "on the law which re ...


1856 in science

NGC 6539 discovered by Theodor Brorsen. N. R. Pogson suggests that the ratios used in the Hipparcos stellar apparent magnitude system should be adopted as standard.


1858 in science

In Luxor, Egypt, the Rhind papyrus found named for Alexander Henry Rhind, who discovered it is sometimes called the Ahmose papyrus of the scribe who wrote it around 1650 BC.


1859 in science

May 26 and June 2 geologist Joseph Prestwich and the Amateur archaeologist John Evans report from the Royal society and the society of antiquaries of London respectively, the results of their investigations of gravel-pits of the Somme valley and ...


1860 in science

18 July – a total solar Eclipse. Warren de La rues photos of this event taken in Spain, together with Angelo Secchi, demonstrate the solar character of the prominences or red flames, seen around the limb of the moon during this Eclipse.


1861 in science

Charles Thorpe, archdeacon of Durham D. 1862, organizes the purchase of some of the farne Islands off the North-East coast of England and the employment inspector for the protection of endangered seabird species. Anton de Bary published his first ...


1865 in science

John Lubbock publishes prehistoric times, as shown by ancient remains and the manners and customs of modern savages, including his coinage of the term Palæolithic.


1866 in science

Giovanni Schiaparelli realizes that meteor streams occur when the Earth passes through the orbit of a comet that has left debris in its path. May – William Huggins studies the spectrum of radiation of a Nova and discovers that it is surrounded by ...


1871 in science

8 October 2 June – Hayden geological survey of 1871 in the United States, including what will be in the next year will be the national Park Yellowstone. In the period from July 21 to 26, the first ever photos of this region taken by William Henry ...


1873 in science

Jacobus Henricus van T Hoff and Joseph Achilles Le Bel, working independently, develop a model of chemical bonding that explains the chirality experiments of Pasteur and provides a physical causes of optical activity of chiral compounds.


1878 in science

The English astronomer Richard A. Proctor describes the zone of avoidance, the area of the night sky, what lies in our own galaxy, for the first time.


1885 in science

The bacterium Salmonella enterica discovered by Theobald Smith, working under Daniel Elmer salmon. Bacteria Escherichia coli E. coli was discovered by Theodor Escherich. The genus Plasmodium is described by Ettore Marchiafava and Angelo Celli.


1886 in science

February 6 – the German chemist Clemens Winkler opens chemical element Germanium. June 26 – Henri Moissan reported the successful isolation of elemental fluorine by electrolysis of a solution of potassium hydrogen difluoride in liquid hydrogen fl ...


1887 in science

April – carte du Ciel project, initiated by the Director of the Paris Observatory Amedee Mouchez. Theodor von der Finsternisse Oppolzers Canon, a collection of 8.000 solar and lunar eclipses 5.200 from 1200 BC to 2161 ad, published posthumously.


1891 in science

The New Zealand government allocates a resolution island in Fiordland as a nature reserve. The new York Botanical garden was founded in the Bronx, largely through the efforts of Nathaniel Lord Britton. Jane Willis Kirkaldy and Catherine Pollard b ...

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