『星界の報告』におけるガリレイの誤謬

概要

論文の詳細を見る
In his book Sidereus Nunciui Galileo maintained that a metallic plate with a hole placed in front of the object lens of his newly constructed telescope would narrow the visual field in proportion to the diameter of that hole and thus enable one to measure the angular distance of two stars. Here Galileo assumed that the visual field was clearly contoured and its size directly proportional to the effective diameter of the object lens. The above is, however, theoretically impossible and experimentally unrealizable, as the author establishes in the present paper. Since the Galilean telescope does not make a real image inside the tube, it does not produce any clear contour of the visual field. Thus, Galileo's assumption cannot be materialized. The same was also demonstrated in the process of experiments with a Galilean telescope reproduced by the present author.
日本科学史学会の論文
1986-08-19