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The Castle of Shadows, a 15th Century Virtual Reality Room

In 1420, Venetian engineer Giovanni Fontana proposed an elaborate mechanical room he dubbed the Castellum Umbrarum, or "castle of shadows." Sound awesome? It is. In a recent paper, French professor Philippe Codognet described it as "a room with walls made of folded translucent parchments lighted from behind, creating… » 2/22/11 3:20pm 2/22/11 3:20pm