American Association for the Advancement of Science
Fermilab Physicists Find New Matter Antimatter Asymmetry
This complicated yet interesting article describing the discovery of asymmetry between the behavior of matter and antimatter.
American Chemical Society
Middle School Chemistry: Protons, Neutrons, and Electrons
Investigate why a charged object is attracted or repelled by another charged object. Explore the concept that the attraction between positive protons and negative electrons holds an atom together.
Exploratorium
Exploratorium: Cern: Antimatter
A wonderfully written non-technical introduction to antimatter, as well as a brief discussion of the investigation into the asymmetry between the quantities of matter and antimatter observed in our universe.
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...
American Museum of Natural History
American Museum of Natural History: Time O Logy Card
Flip over this interactive OLogy card to find short overviews, fact-or-fiction questions, and similar bite-size bits of information about the nature of time, time travel, atomic clocks, and the general theory of relativity.
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: 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
Biography of Richard Feynman
This biography of the physicist Richard Feynman surveys his contributions to the development of the atomic bomb as well as his work on quantum electrostatics.
Famous Scientists
Famous Scientists: Aage Bohr
Learn about the life of Aage Niels Bohr, and see how his work was pivotal in the development of the theory of the structure of the atomic nucleus.
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.
Cosmo Learning
Cosmo Learning: Ap Chemistry With Chemguy
Need to review a topic for AP Chemistry? This site features a collection of video lectures covering the curriculum of AP Chemistry. The lectures are broken up by topics and vary in length. Lectures cover thermodynamics, bonding,...
Sophia Learning
Sophia: John Dalton: Lesson 2
This lesson reviews Dalton's Atomic Theory and explains each of the points.. It is 2 of 3 in the series titled "John Dalton."
Sophia Learning
Sophia: John Dalton: Lesson 1
This lesson reviews Dalton's Atomic Theory and explains each of the points.. It is 1 of 3 in the series titled "John Dalton."
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...
Famous Scientists
Famous Scientists: John Dalton
Learn about the discoveries and life of John Dalton in this article.
Exploratorium
Exploratorium: Cern: Experiments With Antimatter
A description of the two primary experiments conducted at CERN on antimatter: ASACUSA, an attempt to form "Atomcules," using antiprotons; and ATHENA, an experiment to compare the properties of hydrogen and antihydrogen.
Famous Scientists
Famous Scientists: Wolfgang Ernst Pauli
Learn about the life and work of one of the pioneers of quantum physics, Wolfgang Ernst Pauli.
Math Science Nucleus
I. Science Ma Te: Integrating Science, Math and Technology
This site offers a wealth of online textbook-related materials that encourage the discovery of science in the world around us. Enter the site to access material on specific topics. Each section contains reading material (complete with...
Wikimedia
Wikipedia: Werner Heisenberg
In this Spanish-language entry, trace the life and accomplishments of Werner Heisenberg, the great physicist whose work with quantum mechanics resulted in earning the Nobel Prize.
Sophia Learning
Sophia: Ernest Rutherford: Lesson 2
This lesson explains Rutherford's gold foil experiment and the discovery of the nucleus. It is 2 of 3 in the series titled "Ernest Rutherford."
PBS
Science Odyssey: Heisenberg States Uncertainty Principle
Explains the Heisenberg Uncertainty Principle, that it is impossible to know both the momentum and position of an electron, along with describing the impact that it made upon the scientific community upon its introduction in 1927.
Frostburg State University
General Chemistry Online: Atoms & Ions
This site from the General Chemistry Online of the Frostburg State University provides a review of the history of atomic theory, the discovery of the electron, and the discovery of the nucleus. Details on weighing atoms, ion charges,...
Wikimedia
Wikipedia: Ferromagnetism
This site from Wikipedia provides a wonderful in-depth explanation of ferromagnetism, covering the atomic behavior which is responsible for ferromagnetic properties. Also introduces the concepts of magnetic domains and the Curie...
Chem Tutor
Chem Tutor: States of Matter
A very descriptive site that allows students to understand the different states of matter at the atomic level. Also discusses the process of phase changes and displays phase change graphs. Thermochemistry is also touched upon for high...