1.
John Dalton
1803-8
Atomic theory from chemistry
2.
Humphrey Davy
1807
Electric separation of Sodium
3.
Amadeo Avogadro
1811
Atoms and the laws of gases
4.
1833
Laws of electrolysis
5.
Stanislao Cannizzaro
1860
Rediscovery of Avogadro's law
6.
Henri Becquerel
1895
Radioactivity
7.
J.J. Thompson
1897
Discovery of electrons
8.
1911
Discovery of compact nuclei
9.
Robert Millikan
1913
Measurement of electron charge
10.
James Chadwick
1932
Discovery of the neutron
11.
Hans Bethe
1938
Sun powered by Nuclear Fusion
John Dalton first pursued research into atomic theory. He was the first person to propose the existence of the atomic structure.
published his atomic theory describing the atom as having a central positive nucleus surrounded by negative orbiting electrons. or so my book says...
john dalton developed the atomic theory , which he published in 1803
He was born 495 BC
He presented a theory of evolution.
Atomic Theory
That the cake is a lie.
Benjamin Franklin's contribution to the atomic theory was his proposal that electricity was a fundamental force that could be understood through atomic models. He conducted experiments with electricity and proposed the idea of positive and negative charges, which later contributed to the development of the atomic theory.
The most important contribution of Werner Heisenberg was the discovery of the uncertainty principle.
Antoine Lavoisier was a French nobleman and chemist. His contribution to the development of the modern atomic theory was his idea of the possibility of an Atomic Mass.
he contributed by creating milk
See the link below
The contribution of anyone prior to about 1600 to the development of atomic theory might as well be "nothing whatsoever." Democritus and/or Leucippus contributed the name "atomos", but not much else; they were wrong about nearly every detail. John Dalton is just about the earliest scientist to have had any significant contribution to atomic theory, and most of what we now consider atomic theory was developed since about 1900.
he helped the creator of electrons and the studier of chemistry
James Chadwick discovered the neutron in 1932.
Empedocles was a Greek philosopher who lived from 490 to 430 BC. He is most well known for claiming the existence of only four elements: earth, fire, air and water. He developed this theory in response to a popular philosophical argument over change in the natural world.
Mendeleeve formulated the Table of the Elements by listing them by their atomic weight and grouping them into 'families', with similar characteristics.