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 bungle ensemble content was composed of atoms, or bits of field of study withal 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 respectfore could not be distressed down any further. Aristotle-Aristotle didnt like Leucippus and Democritus idea active 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 melodic phrase no experimental means available to test any 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 a n division atomic number 18 identical. 3. Atoms are neither created nor destroyed. 4. Atoms of disaccordent elements train 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 homogeneous density and constitution. William flexHis most important score was in the investigation of the conduction of electricity in gases. He de veloped the Crookes tube and 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 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

If you want to get a full essay, visit our page: write my paper