It was in the early 1800s that John Dalton, an observer of weather and discoverer of color blindness among other things, came up with his atomic theory. Let's set the stage for Dalton's work.
dl.clackamas.edu/ch104-04/dalton's.htm dl.clackamas.edu/ch104-04/dalton's.htm
Democritus first suggested the existence of the atom but it took almost two millennia before the atom was placed on a solid foothold as a fundamental chemical object by John Dalton (1766-1844). Although two centuries old, Dalton's atomic theory remains valid in modern chemical thought.
www.iun.edu/~cpanhd/C101webnotes/composition/dalton.htm... www.iun.edu/~cpanhd/C101webnotes/composition/dalton.html
John Dalton - Wikipedia, the free encyclopedia
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For other persons named John Dalton, see John Dalton (disambiguation). John Dalton FRS (6 September 1766 – 27 July 1844) was an English chemist, meteorologist and physicist. He is best known for h...
en.wikipedia.org/wiki/John_Dalton
John Dalton, father of modern atomic theory, developed atomic theory in early nineteenth century. According to him, all elements are made of atoms... John Dalton's Atomic Theory. ... Though the earliest atomic theories were proposed by Democritus and Aristotle, the first accepted theory was proposed by John Dalton.
www.buzzle.com/articles/john-daltons-atomic-theory.html www.buzzle.com/articles/john-daltons-atomic-theory.html
Atomic theory proposed by John Dalton; Dalton's theory was based on the premise that the atoms of different elements could be distinguished by differences in their weights. He stated his theory in a lecture to the Royal Institution in 1803. The theory proposed a number of basic ideas: All matter is composed of atoms;
www.rsc.org/chemsoc/timeline/pages/1803.html
John Dalton (1766-1844) developed the first useful atomic theory of matter around 1803. In the course of his studies on meteorology, Dalton concluded that evaporated water exists in air as an independent gas. He wondered how water and air could occupy the same space at the same time, when obviously solid bodies can't.
antoine.frostburg.edu/chem/senese/101/atoms/dalton.shtm... antoine.frostburg.edu/chem/senese/101/atoms/dalton.shtml
John Dalton is considered the Father of Modern Atomic theory. His efforts gave us our first understanding of the atom bringing it from an abstract ... John Dalton's Atomic Theory | Universe Today...
www.universetoday.com/guide-to-space/physics/john-dalto... www.universetoday.com/guide-to-space/physics/john-daltons-atomic-theory/
John Dalton is now called the father of modern atomic theory for his efforts. His atomic theories were introduced in 19th century England. In September of 1803, John Dalton wrote his first table of atomic weights in his daily logbook.
northspringer.tripod.com/HistoryofAtom/id1.html northspringer.tripod.com/HistoryofAtom/id1.html
There were revolutions in particle thinking and the major revolution in atomic thought is attributed to John Dalton - indeed, Dalton's theory "marks an epoch in the history of chemistry" (Thorpe, 1909, p.95; see also Bensaude-Vincent & Stengers, 1996;
www.aare.edu.au/02pap/har02049.htm
After having sat dormant for more than two thousand years, atomic theory was finally brought into the modern age with the work of John Dalton. ... In the end, John Dalton developed such important tenants of atomic theory as the fact that all atoms of a given element are identical in every way, that no two elements share...
atomic-molecular-optical-physics.suite101.com/article.c... atomic-molecular-optical-physics.suite101.com/article.cfm/john_dalton_and_atomic_theory
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