Rutherford model of the atom and Bohr

passim the macrocosm of civilization, populace has attempted to systematise knowledge or so the building of exit. Aristotle believed that any body is basic completely(prenominal)y four elements : pee , Fire, Air and Earth. Properties bodies cipher on the flesh ratio of elements in each of them . This side of the expression of national existed virtu bothy unaltered until the time of the gothic alchemists. A particular answers to all questions of man was non until now.\nIn the last coke years, scientists give commission been capable to formulate virtually theories of memberic structure , which may not be remote from the truth. Already in the past, ancient classical philosophers assumed that all matter is maven, that acquires certain properties dep halting on its essence . some contract argued that the matter consists of tiny segments called pinchs. scientific basis of nuclear- molecular(a) theory were place afterwards in the work of the French chemist Lavoisier and J. Proust, face chemist J. Dalton, Italian physicist A. Avogadro and other researchers.\n half-yearly law of DI Shows the existence of periodic stock communication mingled with all chemical substance substance elements. This suggests that the basis of all the blood cells is something in putting green . By the end of cardinal one C chemistry reign the belief that the atom is the smallest indivisible element of simple substances. It was believed that in all chemical reactions argon destroy and are moreover molecules , atoms are unchanged and can not be break in apart. Finally at the end of XIX century have made ​​the discovery that revealed the complexity of nuclear structure and the adventure of transformation of one atom to some other.\nThe larn of atomic structure practically began in 1897-1898 , after the couch was finally launch as the personality of cathode rays as the melt down of electrons and by the tingle and mass of the elect ron. existing allocation of versatile substances electrons leads to the conclusion that electrons are part of all atoms. But the atom is known to be electrically neutral, since it implied that his enhance had to enter another part of that match the amount of prejudicial charges of the electrons. This positively aerated part of the atom was discovered in 1911 by Rutherford in the study of particle motion in gases and other substances.\nThe world-class modern atomic theory proposed by John Dalton. He admitted that each chemical element is cool of atoms of the same size and weight. In 1895, Wilhelm gas constant discovered x- rays ( standard a Nobel pry for the discovery ), which was later given the chance upon of X-ray radiation. And nigh year, Antoine Henri Becquerel showed that the uranium salt spontaneously emits camouflaged radiation. This phenomenon is called radioactivity. These and other studies have paved the way for the discovery of subatomic particles.