Boyle demonstrated the necessity of air for combustion, for animal breathing, and for the transmission of sound.He published much influential work,including New Experiments Physio-Mechanical,Touching the Spring of the Air and its Effects and the Sceptical Chymist. In the Spring of The Air he described the inverse relationship between the volume of a gas and its pressure now known as Boyle's Law.
1733 - 1804
Discovered oxygen. He was educated to be a minister in the churches that dissented from the church of England.
1754 - 1826
He first published his Law of Definate in 1794. This law states a compound is composed of exact proportions of elements mass regardless of how the compound was created.
1766 - 1794
Dalton contributed to the atomic theory,that matter is composed of the atoms of differing weights combined in simple ratio's by weight.Dalton was the first to prepare a table of relative atomic weights.
1770 - 1773
Before Priestly Scheele discovered oxygen first and called it,"fire air" because it supported combustion.
1772 - 1826
Found that the mass is conserved in a chemical reaction.The total mass of the products of a chemical reaction is always the same as the total mass of the starting material consumed in the reaction.
1801 - 1829
Plucker demonstrated that analyticd geometry was capable of replacing the results of pure geometry. He replaced the point by the straight line as a fundamental element in geometry.
1861 - 1863
His first great discovery was that of the element thallium. He found that as the attenuation of the gas was made greater the dark spare round the negative electrode, while rays, now known as cathode rays,proceed from the electrode.
1897 - 1898
Modified Crookes tubes and found that lays inside the tube had a negative charge.
Marie and Pierre Curie
1897 - 1901
Discovered radioactive elements and created the theory of radioactivity.
1898 - 1900
Worked wit Rutherford and proved that the reason for odd behavior of radioactive elements was because they decayed into other elements and created alpha, beta, and gama radiation
Jean Baptiste Perrin
1905 - 1926
Jean Perrin confirmed Einstein's ideas on Brownian motion by the empirically calculating Avogadro's Constant, conclusively proving Dalton's atomic theory.
1907 - 1908
Won a nobel prize in 1908 after discovering his nucleus.
1908 - 1909
Bombarded gold atoms with alpha particles in a experiment which led to Rutherford discovery.
1908 - 1909
Performed oil-drop experiment and was able to determine the change and mass of a single electron.
1910 - 1911
Co-inventor of the Geiger counter.
1928 - 1929
Discovered the neutron accounting for most of the mass in an atom.