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384
Aristotle
He was born in Greece, formed two schools of philosophy that focused on openness to ideas of the concept of life. -
460
Democritus
Born in Abrade, was one of the two founders of ancient anatomist theory. -
500
Precision Balence
The precision balance helped the history of matter because it allowed scientists to measure more accurately and measure smaller things. This helped some discoveries, and helped scientists perform better and more precise / accurate experiments -
700
Abu Musa Jabir ibn Hayyan
He was a citizen in Iran who authored large number of works that furthered the knowledge of chemistry. -
1250
Albert Magnus
Albert Magnus was a German chemist that in 1250, discovered the “Philosopher's stone” He was also the first person to isolate an element, which was Arsenic. His discovery helped others find the properties of the philosophers stone, and helped people figure out how to isolate an element. -
1440
Printing Press
The printing press helped ideas be spread to more people and a lot faster because it could be used to copy and print the same thing over and over. It helped spread and show scientists other scientists ideas more easily, and also helped spread that idea of the model of the atom, allowing others to add to it. -
Robert Boyle
Born in Ireland, known for Boyle's law which describes the inversely proportional relationship between the absolute pressure and volume of a gas, if the temperature is kept constant within a closed system. -
Lavoisier
Born in France, He helped name main elements and transform chemistry from a qualitative science to a quantitative one. -
Henry Cavendish
Physicist in Britain. In 1766 he discovered hydrogen, which at the time he called flamable air. This led to others knowing being able to find other properties of gasses. -
John Dalton
Born in England, He defined partial pressure to the physical law. Helped develop the modern atomic theory. -
Avogadro
In 1811 determined that volume of one mole of gas in Italy. He determined that it was 6.022,136,7 x 10^23 This gave scientists a useful number to measure substances with. -
JJ Thomson
Born in England, discovered the electron and sub atomic partial. Helped with the research in atoms and methods of viewing atoms. Experimented the nature of positively charged atoms. -
Mendeleev
Mendeleev was a Russian chemist that in 1868 formulated the Periodic Law, helped correct some properties of already existing elements and predict the next either elements. He made his periodic table that organized the elements and showed similar properties in the areas. This helped other scientists work with an organization of elements and helped discover new elements and properties. -
Rutherford
Father of nuclear physics New Zealand discovered the concept of a radioactive half life, Experimented and proved the half life of the atom which lead to the eventual splitting of the atom -
Lise Meitner
Born in Austria, researched of fusion that later lead to the development of current knowledge of fusion. -
James Chadwick
Born in England, discovered the neutron in the atom. -
Marie/Pierre Curie
Couple from Poland that pioneered the study of radioactivity. Their work led to the discovery in 1898 of the elements radium and polonium. -
Bohr
Between 1901 and 1922, Bohr hypothesised that electrons existed at a set level of energy. He wasn’t completely right, but his model helped helped experimental theory fit other scientists models. After his hypothesis was cleared up and the inaccuracies removed, his hypothesis led to him receiving a nobel peace prize. -
Heisenberg
Germany Theoretical Physicist for quantum mechanics, Best known for the Heisenberg uncertainty principle. -
Linus Pauling
Born in The United States, a co founder to the field of quantum chemistry, along with published papers that furthered current knowledge of chemistry. -
William Ramsey
William Ramsey was a British chemist that in 1904 helped identify the atmospheric gases helium, neon, krypton and xenon. This led to a new section on the periodic table. This led to other scientists being able to figure out what the atmosphere was made of, and could be used to help date the past by analyzing what elements were present at the time. -
De Broglie
French physicist that reached on the quantum theory, and in 1923 he predicted the wave nature of electrons. This lead to other scientists being able to use this information and make more discoveries. He received a nobel peace prize in 1929 for his work. -
Schrodinger
Thought about how the movement of an electron in an atom could be a wave. In 1926 he published his findings which gave a theoretical basis for the atomic model that Bohr has proposed based on laboratory evidence. The equation he made became known as the Schrodinger wave equation. -
Irene Joliot-Curie
Irene Joliot-Curie was a French chemist that was the daughter of Marie and Pierre Curie. She, along with her husband, managed to turn one element into another in 1934 by using some of the same radioactive discoveries her parents found. This helped in medical practice, and helper other scientists change elements. -
Vacuum Tube and Electric Generator
The vacuum tube helped scientists by allowing them to experiment in a near-vacuum space. It allows the free passage of electric current, and helped scientists make new discoveries using it. The electric generator helped discover how electricity works, and so did the vacuum as electricity could move pretty freely in it. These both led to seeing how matter reacts in a vacuum, and helped make more discoveries as well. -
Rosalind Franklin
English scientist that in 1951 helped other scientists James Watson, Francis Crick and Maurice Wilkins discover that DNA is a double helix shaped like a twisted ladder. This discovery helped other scientists build off and discover more about DNA.
