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The first theories of matter were published in 450 BC. presented by Empedocles. C., stated that all matter consists of 4 resources: earth, wind, fire and water. -
Democritus of Abdera called the basic elements of matter atoms, which literally means "indivisible". -
John Dalton reported his first general explanation of the chemical theory of the atom, a cornerstone of modern chemistry. -
In 1897, Thomson found the electron and later presented a model for the composition of the atom. -
Ernest Rutherford discovered the nucleus of the atom. -
Niels Bohr proposed a model of the atom in which the electron could only use certain orbits around the nucleus. -
Louis de Broglie put forward the idea that particles, like electrons, could be described not just as particles but also as waves. -
In 1927, he proposed an "uncertainty relation", setting limits on the accuracy with which they could realize the position and velocity of a parallel particle. -
Schrödinger combined the wave behavior equations with the de Broglie equation to produce a mathematical model for the division of electrons in an atom. -
Chadwick made an important discovery in the field of nuclear science: he taught the reality of neutrons, necessary particles devoid of electrical charge.