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  2. John Dalton - Wikipedia

    en.wikipedia.org/wiki/John_Dalton

    John Dalton FRS (/ ˈ d ɔː l t ən /; 5 or 6 September 1766 – 27 July 1844) was an English chemist, physicist and meteorologist. [1] He introduced the atomic theory into chemistry.

  3. History of atomic theory - Wikipedia

    en.wikipedia.org/wiki/History_of_atomic_theory

    Modern atomic theory is not based on these old concepts. [2] [3] In the early 19th century, the scientist John Dalton noticed that chemical substances seemed to combine with each other by discrete and consistent units of weight, and he decided to use the word atom to refer to these units. [4]

  4. List of artworks in the collection of the Royal Society of ...

    en.wikipedia.org/wiki/List_of_artworks_in_the...

    John Dalton bust – Burlington House. The bronze bust of John Dalton was also created by Ruby Levick and was donated to the Chemical Society in 1903 by its former President Sir Thomas Edward Thorpe, [4] as also attested by the inscription engraved on the bust's base: "John Dalton presented by T.E. Thorpe CB. L.L.D. F.R.S. past President in commemoration of the centenary of the enunciation of ...

  5. List of people considered father or mother of a scientific field

    en.wikipedia.org/wiki/List_of_people_considered...

    Atomic theory (early) Democritus (c. 460 – c. 370 BC) [62] Founder of atomism in cosmology. Atomic theory (modern) Father Roger Boscovich (1711–1787) [63] First coherent description of atomic theory. John Dalton (1766–1844) [64] First scientific description of the atom as a building block for more complex structures. Atomic bomb

  6. List of blue plaques erected by the Royal Society of Chemistry

    en.wikipedia.org/wiki/List_of_blue_plaques...

    John Dalton: John Dalton 1766–1844 taught natural philosophy and mathematics at the Academy on this site 1793–1800. His Atomic Theory was first presented on 21 October 1803 to the Manchester Literary and Philosophical Society of which he was President 1816–1844 . Peace Garden Manchester

  7. Atom - Wikipedia

    en.wikipedia.org/wiki/Atom

    But this ancient idea was based in philosophical reasoning rather than scientific reasoning. Modern atomic theory is not based on these old concepts. [2] [3] In the early 19th century, the scientist John Dalton found evidence that matter really is composed of discrete units, and so applied the word atom to those units. [4]

  8. Law of multiple proportions - Wikipedia

    en.wikipedia.org/wiki/Law_of_multiple_proportions

    In 1804, Dalton explained his atomic theory to his friend and fellow chemist Thomas Thomson, who published an explanation of Dalton's theory in his book A System of Chemistry in 1807. According to Thomson, Dalton's idea first occurred to him when experimenting with "olefiant gas" and "carburetted hydrogen gas" .

  9. Law of definite proportions - Wikipedia

    en.wikipedia.org/wiki/Law_of_definite_proportions

    The law of definite proportions contributed to the atomic theory that John Dalton promoted beginning in 1805, which explained matter as consisting of discrete atoms, that there was one type of atom for each element, and that the compounds were made of combinations of different types of atoms in fixed proportions. [5]