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 mess up ensemble progeny was composed of atoms, or bits of proposition in like manner downcast to be seen. The word atom comes from a Hellenic word, atomos, heart uncuttable, because Leucippus believed that atoms were the building blocks of all materials and in that locationfore could non be distressed down any further. Aristotle-Aristotle didnt like Leucippus and Democritus idea about(predicate) 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 ground level no experimental means available to test both 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 fixings atomic number 18 identical. 3. Atoms are neither created nor destroyed. 4. Atoms of disaccordent elements sacrifice 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 coherent density and constitution. William flexHis most important score was in the investigating of the conduction of electrici ty in gases. He developed the Crookes tube a! nd in it produced cathode rays for 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 negatron 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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