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Atom Timeline - Timeline Help
Atom Timeline part 1 of 6 from 440 BCE to 1869 at Timeline Help. - 440 BCE
- 400 BCE
- 1704
- 1777
- 1803
- 1815
- 1832
- 1869 | The concept of the atom - a unit of matter that is indivisible - is introduced by Leucippus of Miletus.
Democritus, a Greek philosopher, develops the theory that all matter is composed of tiny particles that he called atomos.
Isaac Newton proposed that the universe was mechanical with small solid masses that were constantly in motion.
A French chemist named Lavoisier founds modern chemistry with the concepts that an element cannot be broken down into smaller components and that combined elements create chemical compounds.
John Dalton, a British chemist, introduces his atomic theory of spherical solid atoms based on properties of mass that were measurable.
Prout hypothesizes that hydrogen is an atom and all elements are made from combinations of hydrogen atoms.
Michael Faraday studied the effect of electricity on various solutions, coining the term "electrolysis" to define the splitting of molecules by electricity. He did not subscribe to the theory of atomism.
Dmitri Mendeleev arranged the elements into groups with similar properties. His discovery proved that "the properties of elements were periodic functions of their atomic weights." This is now known as the Periodic Law. | Atom Timeline 1 2 3 4 5 6 Bibliography of the Atom TimelineJohnson, W (2007). Atomic Structure Theory: Lectures on Atomic Physics.
Condon, E U and Shortley, G H (1935). The Theory of Atomic Spectra.
Cox, P A (1996). Introduction to Quantum Theory and Atomic Structure, Oxford Chemistry Primers.
Dampier, W and M (2003). Cosmology, Atomic Theory, Evolution. Classic Readings in the Literature of Science.
Weyl, H (2007). Quantum Theory Of Atomic Process.
Haken, H, Wolf, H Cand Brewer, W D (2007). The Physics of Atoms and Quanta: Introduction to Experiments and Theory. Advanced Texts in Physics.
Smith, R A (2001) Memoir of John Dalton and History of the Theory up to His Time.
Patterson, E C (1970). Biography of Natural Philosopher John Dalton.
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