-
-
Xenophon's march through the Persian Empire encouraged Sparta to begin war on the Persians
-
Through his research, Dalton concluded that atoms were hard spheres -
The Battle of Trafalgar was one of the most important engagements for Britain in the Napoleonic wars because the victory saved them from French invasion.
-
When studying electrolysis, Faraday discovered that atoms have some electrical component.
-
Oregon Fever hit America beginning mass migration on the Oregon Trail
-
Goldstein found canal rays that have the same charge as an electron.
-
JJ Thompson discovered the charge-to-mass ratio of electrons through what he called the "Plum Pudding" model. -
-
Rutherford discovered that the atom is mostly empty space and he discovered the nuclear structure of the atom -
Millikan discovered the magnitude of an electron's charge.
-
Bohr developed an atomic model showing that protons electrons revolve around a nucleus -
Schroedinger's model a dense nucleus surrounded by a cloud of electrons at various levels in orbitals. Schrödinger mathematically determined regions in which electrons would be most likely found. -
Werner Heisenberg contributed to atomic theory through formulating quantum mechanics in terms of matrices and in discovering the uncertainty principle, which states that a particle's position and momentum cannot both be known exactly
-
-
Chadwick is best known for his discovery of the neutron in 1932. A neutron is a particle with no electric charge that, along with positively charged protons, makes up an atom's nucleus. -