ATOMIC THEORY AND STRUCTURE

JOHN DALTON

• Was born color blind in eaglesfield England in 1766
• Was principle of a Quaker school then a teacher at a college in Manchester
• 1803- Dalton's Laws of Partial Pressures

JOHN DALTON CONT.

• He made the first chart of atomic weights
• He was first to say that atoms couldn't be created or destroyed.
• He said elements can be distinguished by their weights
• He also said that atoms combine in simple ratios.

J.J THOMSON

• His father wanted him to be an engineer, but that didn't happen
• He began studying cathode rays in 1894
• He was respected and liked, and students came from all over to study with him
• He found the electron and started first use of mass spectrometry.
• He was married to one of his students, and his son even got a Nobel prize.

EARL RUTHERFORD

• He received his early education in government schools when he was 18
• He also researched under J.J Thomson
• He invented a detector for electromagnetic waves
• In 1898 he found alpha and beta rays in uranium radiation
• He also found the nucleus of atoms in 1910

NEILS BOHR

• His dad was a physiologist and helped him with his interest in physics
• His mom was great in the field of education
• 1913 he studied the structure of atoms, and made a picture of them.
• In the 1930s he studied atomic nuclei transmutations and disintegrations

IRENE CURIE

• Daughter of Pierre and Marie curry
• Became doctor of science in 1925
• 1938 she researched action of neutrons on heavy elements
• Became professor at the faculty of science in Paris in 1937
• She helped create the first french atomic pile in 1948

ROBERT MILKAN

• Received a ph.d in 1895 because of research about polarization of light
• Made the accurate determination of the charge of an electron
• 1910 he demonstrated the atomic structure of electricity
• Did stuff with hot-spark spectroscopy of the elements
• And he extended the ultraviolet spectrum far past where it was