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500 BCE
The Alchemists
The Alchemists invented experimental techniques. They were also the first to isolate certain metals we know today as elements like including antimony, arsenic and zinc. -
428 BCE
Plato
Plato was an Athenian philosopher in Ancient Greece he was the founder of the Platonist school of thought. He also invented the institution of higher learning in the Western world. -
400 BCE
Democritus
In about 400 B.C. Democritus, was a Greek philosopher he suggested that all matter was formed of different types of tiny discrete particles. -
384 BCE
Aristotle
He was an ancient Greek philosopher and scientist. He is considered one of the greatest thinkers in politics, psychology and ethics. When Aristotle turned 17 he enrolled in Plato's Academy. He was so good he started tutoring other people how to do what he does. -
330 BCE
Solar System Model
The Bohr also known as. The Solar System Model of the atom states that atoms consist of a nucleus with a number of electrons in orbit around the nucleus, similar to a solar system. -
Robert Boyle
Robert Boyle was an Anglo-Irish natural philosopher, chemist, physicist, and inventor. Boyle is largely regarded today as the first modern chemist. He discovered that electric attraction operates in a vacuum. -
Lavoisier
Lavoisier was a French nobleman, and chemist. He was central to the 18th-century chemical revolution. Lavoisier was so good he had a large influence on the history of chemistry. -
John Dalton
John Dalton was an English chemist, physicist, and meteorologist. He is best known for introducing the atomic theory into chemistry. His research into color blindness. -
Dmitri Mendeleev
Dmitri Mendeleev was a Russian chemist and inventor. He is best remembered for formulating the Periodic Law. Which started the periodic table of elements. -
Solid Sphere of Billiard Ball Model
Invented by John Dalton he believed atoms were the smallest particles of matter. In order to prove that he used wooden balls. These were introduced by Dalton so that model atoms could be joined and used to model compounds together with hooks. -
J.J Thomson
Joseph John Thomson was a British physicist and Nobel Laureate in Physics. He is credited with the discovery of the electron, the first subatomic particle to be discovered. -
The Curies
The curies were a scientific group that included Marie and Pierre they successfully isolate radioactive and radium salts from the mineral pitchblende. There lab was in Paris In 1898, the Curies discovered the existence of the elements radium and polonium in their research of pitchblende. -
Plum Pudding Model
The plum pudding model invented by J. J. Thomson has electrons surrounded by a positive charge volume, such as "plums" negatively charged. Then it contained a "pudding" positively charged. The term "plums" is an obsolete use of the term in the English word "plum pudding" it applied at the time to raisins, not plums. -
Albert Einstein
Albert Einstein, was a German-born theoretical physicist who founded the theory of relativity. His work is also known for its influence on scientific theory. -
Robert Millikan
Robert Millikan was an American experimental physicist who was honored with the Nobel Prize for Physics in 1923 for the measurement of the elementary electric charge. He succeeded in precisely determining the magnitude of the electron's charge. -
Ernest Rutherford
Baron Rutherford, was a British physicist born in New Zealand who came to be regarded as the founder of nuclear physics most know him, after Michael Faraday, to be the greatest experimentalist. -
Neil's Bohr
Niels Bohr suggested a quantum-based theory for the hydrogen atom that energy is distributed only in such well-defined amounts. -
Henry G.J. Mosely
Henry G.J. Mosely used self-built equipment in 1913 to make the periodic table. It was uncovered by his discovery and allowed him to confidently predict the presence of four new chemical elements, all of which were discovered. -
Electron Cloud Model
The model Invented by Niels Bohr spoke of the nucleus orbiting electrons. The model of the electron cloud says that at any given moment, we cant tell precisely where an electron is, but the electrons are more likely to be in particular areas. -
Werner Heisenberg
Werner Karl Heisenberg was one of the central founders of quantum mechanics. He was a German theoretical physicist. In a breakthrough article.
