History Time line of the Atom

Leucippus, Democritus certa 450 B.C. -The idea of the section was first introduced by Leucippus of Miletus around 450 B.C.. Leucippus and his pupil, Democritus, theorized that blow out ensemble content was composed of atoms, or bits of question alike downcast to be seen. The word atom comes from a classical word, atomos, heart uncuttable, because Leucippus believed that atoms were the building blocks of all materials and in that respectfore could non be distressed down any further. Aristotle-Aristotle didnt like Leucippus and Democritus idea about the atom . He claimed that there was no smallest part of matter and that variant substances were made up of proportions of fire, air, earth, and water. As there were of physique no experimental means available to test each view, Aristotles prevailed mainly because people liked his philosophy better. John Dalton-In 1803 Dalton came up with these theories1. result is made up of indivisible atoms. 2. All atoms of an partic le atomic number 18 identical. 3. Atoms are neither created nor destroyed. 4. Atoms of disaccordent elements bring different weights and chemical substance properties. 5. Atoms of different elements combine in simple whole add up to form compounds. -It was not until 1850 that another atomic theory was proposed. Dalton say that all matter is made of indivisible and indestructible atoms, which differ from element to element.

The atom, it was assumed, was of alike density and constitution. William curveHis most important score was in the investigation of the conduction of electricity in gases. He developed the Cr ookes tube and in it produced cathode rays f! or the first time. He also invented the radiometer and the spinthariscope, a particle detector. Werner HeisenbergWerner explaned an atom as a cloud, and called it quantum mechanics. Therefore, in quantum mechanics, there is not an electron circling aroung the atomic nucleus, hardly rather an electron orbital... If you want to get a luxuriant essay, order it on our website: OrderCustomPaper.com

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