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750 BCE
The Alchemist
Around 500-1700 B.C the Alchemist tried to fin a substance that could transfer common metals into gold or silver. They didn't succeed but they found they made the scientific model -
470 BCE
Democritus
He was a Greek philosopher who introduced the idea of an atom. -
428 BCE
Plato
He was a greek philospher who came up with the idea of elements in 428 B.C -
Jan 1, 1500
Solar System Model
The solar system Model was made in the 1500s, by a guy named Nicolaus Copenicus. -
Robert Boyle
He was a natural philosopher, chemist, physicist and inventor. He was most famous for the Boyles laws. -
Antone Lavoisier
A chemist who revolutionized chemistry and biology. He was most famous for the law of conservation of mass. -
Billard Ball Model
In 1803 John Dalton atoms where the smallest particles of matter, so he used wooden balls to model them. -
John Dalton
He was an English chemist, physicist and meteorologist. He was best known for the atomic theory. -
Amedeo Avogardo
He first proposed what is now known as the AVogardo law in 1811. -
Dmitri Mendeleev
In 1869 he created the periodic table of elements. -
J.J Thompson
He was a physicist who determined the charge to mass ratio of electrons around 1892. -
The Curies
They identified and studied radioactive elements around 1898. -
Plum Pudding model
The plum pudding model was first proposed by J.J Thompson in 1904. -
Ernest Rutherford
In 1909 he determined that the nucleus of a atom is positively charged. As a result of the alpha particles scattering gold experiment -
Neils Bohr
A physicist who developed the Bohr model. -
Robert Millikan
He was a physicist who was most famous for creating the oil-drop experiment -
Henry G.J Mosley
In 1914 he discovered the numbers of protons in elements and their atomic numbers. -
Werner Heisenberg
In 1925 he published a breakthrough paper on quantum mechanics. -
Electron Cloud Model
The model consist of small but massive nucleus surrounded by a cloud of rapidly moving electrons. The model was first proposed by Ewrin Shrodinger in 1926. -
Ewrin Schrodinger
In 1933 he won a Nobel prize and he is won of the fathers of quantum mechanics -
James Chadwick
In 1935 he was awarded the Nobel prize for discovering the neutron. -
Albert Einstein
He was the greatest physicist ever. He contributed Aton to quantum mechanics.