• Parallax

    In practical terms, parallax is the apparent change in spatial relationships between elements in a three-dimensional scene that occurs when we alter our viewing position. Move slightly, and stationary objects located at different distances in the scene seem to shift their positions relative to each other. More

  • Peabody Military Rifle

    In 1862 Peabody patented a breech-loading rifle but was unable to perfect it in time to play a major role in the American Civil War (1860-1865). His basic design was based upon a pivoting breechblock, the front of which pivoted down on a transverse pin fixed through both the upper rear of the breechblock and the upper rear of the box-like receiver. As the breechblock was lowered, it exposed the barrel chamber and permitted the insertion of a cartridge. The rifle was fired by means of a musket-style outside hammer whose lockwork was inletted into the buttstock behind the receiver. More