Actress Maria Moscoliou, as the high priestess, using a parabolic mirror to light the Olympic torch at the ceremony to start the relay for the XXII...
telescope magic i of the roque de los muchachos observatory on la palma, canary islands - 拋物面鏡 個照片及圖片檔建築物外觀, 反射
Engraving depicting an audience enjoying a magic lantern show. The apparatus here differs little from that of Kircher in the 17th century, consisting...燈籠
Engraving depicting a family enjoying a magic lantern show. The apparatus here differs little from that of Kircher in the 17th century, consisting of...燈籠
Engraving depicting a boy lighting paper using the sun's rays focused by a concave mirror. Dated 19th century.男孩, 好奇心
Diagram taken from the 1572 Latin edition of 'Optics' by Alhazen , showing a parabolic mirror at the bottom and the source of the light rays,...數學
Chancellor Gordon Brown is reflected in a convex mirror as he walks into the Treasury on March 21, 2007 in London. This is likely to be Mr Brown's...
Greek actress Theodora Siarkou, serving as high priestess in the flame-lighting ceremony of the Turin 2006 Winter Games, holds aloft the Olympic...
Greek actress Theodora Siarkou, serving as high priestess in the flame-lighting ceremony of the Turin 2006 Winter Games, holds aloft the Olympic...
