A brief encyclopedia entry from Wikipedia on Mount Parnassus. The information is short, but links are provided for additional information on related subjects.

The Battle of Aegospotami in 405 BC resulted in the destruction of the Athenian navy in the Peloponnesian War and led directly to Athens' final defeat by Sparta in the following year. Read the details of the battle at this site.

This site from Wikipedia the encyclopedia is a concise site that is technical in nature but links are provided for clarification. Includes a comparison between meiosis and mitosis.

This Wikipedia encyclopedia article shows how gravel is mined and used in building and paving.

Wikipedia provides this encyclopedia entry for cement that features its history, production, and use as a building material, as well as links to related topics.

Wikipedia provides an encyclopedia entry about concrete that features pictures, diagrams, history and other information, as well as links to related topics.

This site from Wikipedia gives a comprehensive overview of capital. Includes many economic terms with links for further clarification. A good analysis of multiple aspects of capital.

This Wikipedia site is an introduction to paramagnetism and paramagnetic materials.

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...

This Wikipedia site has a definition of the Curie point.

This site from the encyclopedia Wikipedia provides a concise definition of magnetic permeability given in terms of magnetic flux density and magnetic field strength.

A description of the Voskhod spacecraft along with a listing of the Voskhod flights that occurred and ones that were cancelled.