Robert A. Millikan was the first to determine the electrical charge of the electron.
Robert Millikan did his experiment by bombarding a thin sheet of beryllium with an alpha particle newtest3
J. Robert Oppenheimer was a physicist who is often credited as the "father of the atomic bomb." He led the Manhattan Project during World War II that developed the first atomic bomb. His contributions to the atomic theory revolutionized modern warfare and had a profound impact on the course of history.
Thales was not a chemist; important contributions in geometry and astronomy.
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.
One scientist who made important contributions to atomic theory is John Dalton. He is known for his work on the atomic theory of matter, proposing that all matter is made up of tiny, indivisible particles called atoms. His ideas laid the foundation for modern chemistry.
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Robert Duane Cowan has written: 'The theory of atomic structure and spectra' -- subject(s): Atomic spectroscopy, Atomic structure
Ernest Rutherford contributed to the atomic theory through his gold foil experiment. He discovered that there was a positively charged central core to the atom and he called it the nucleus.
Leukippus, Democritus, Dalton, Bohr, Rutherford, Thomson and many others.
Robert Boyle is known as the founder of modern chemistry for his work on the behavior of gases, Boyle's Law, and his advocacy for the scientific method. He made significant contributions to the understanding of the physical properties of gases and the distinction between chemical elements and compounds. Boyle's experiments laid the groundwork for the development of atomic theory.
Benjamin Franklin made several contributions to various scientific fields. In atomic theory, he was the first to propose how to measure the size of an atom.
John Dalton was an English scientist in the eighteenth century. He developed atomic theory and published a table of atomic weights.