Encyclopedia > 475 BC

  Article Content

475 BC



All Wikipedia text is available under the terms of the GNU Free Documentation License

 
  Search Encyclopedia

Search over one million articles, find something about almost anything!
 
 
  
  Featured Article
Condensed matter physics

... hole electron gas[?] phonons (lattice vibrations) valence band Amorphous solid Alloy Metal Semiconductor Insulator Surface Interface Sof ...