National Institute of Open Schooling
Atomic Structure
Learners explain historical findings such as Rutherford and Bohr's contributions, explain wave particle duality, and formulate Heinsenberg's uncertainty principle. They also draw s, p, and d orbitals, explain more historical findings,...
Science Struck
Science Struck: James Chadwick's Atomic Theory and Its Lasting Impact
Explains how James Chadwick came to develop his atomic theory by building upon the work of other scientists.
Frostburg State University
General Chemistry Online: History of Chemistry
A compilation of frequently asked questions in the world of chemistry. Look for answers about atomic theory, periodic table, and Lavoisier in this FAQ.
Other
Ancient Greek Philosophy: Democritus of Abdera
A discussion of the theories of Democritus (c. 460-370 BC). He is best known as an atomist, having developed an atomic theory. Also discusses the ideas of other philosophers who are believed to have influenced Democritus.
Science Struck
Science Struck: Plum Pudding Model
Describes J.J. Thomson's theory of atomic structure, called the 'Plum Pudding Model,' and how it was disproved by Ernest Rutherford.
National High Magnetic Field Laboratory
Magnet Academy: Paul Dirac
Paul Adrien Maurice Dirac was an outstanding twentieth century theoretical physicist whose work was fundamental to the development of quantum mechanics and quantum electrodynamics. He was awarded the Nobel Prize for Physics jointly with...
Other
Cronodon: Atoms Models of the Atom
Presents models of the atom developed by Thomson, Rutherford, Bohr, and Schrodinger. Includes successes and failures of each, illustrations, and detailed descriptions. Also discusses Dirac's model of the atom and introduces quantum...
Stanford University
Stanford Encyclopedia of Philosophy: Democritus
A look at the life of Democritus of Abdera. He helped to develop a theory of atomism, explained in detail here. Other significant ideas he had included his theory of perception, a theory of the soul and its relationship to living things,...
National High Magnetic Field Laboratory
Magnet Academy: Enrico Fermi
Enrico Fermi was a titan of twentieth-century physics. He outlined the statistical laws that govern the behavior of particles that abide by the Pauli exclusion principle and developed a theoretical model of the atom in his mid-twenties....
National High Magnetic Field Laboratory
Magnet Academy: Edward Purcell
Edward Mills Purcell was an American physicist who received half of the 1952 Nobel Prize for Physics for his development of a new method of ascertaining the magnetic properties of atomic nuclei. Known as nuclear magnetic resonance...
BBC
Bbc Mundo: El Ano Magico De Einstein
A special feature on Einstein from the BBC, in Spanish. Follow Einstein's life, including his role in the development of the atomic bomb; learn about the impact and practical applications of his work; or watch a speech he gave in 1950...
Friesian School
Proceedings of the Friesian School/the Quantacized Atom
A very lengthy page from friesian.com discussing Bohr's theory of electronic energy levels and the explanation of commonly observed atomic emission line spectra. The concept of a photon and Einstein's observation of the photoelectric...
Wikimedia
Wikipedia: Mutual Assured Destruction
A complete description of the concept of Mutual Assured Destruction. Explains what the concept means, and how the concept was used during the Cold War and up to the George W. Bush Administration. Includes links to terms that may require...