ウイナースペクトルの測定に関する基礎的研究- 基準濃度について
1996 年 13 巻 3 号 p. 116-123
詳細
1996 年 13 巻 3 号 p. 116-123
Theoretical and experimentally investigations on the physical quantity for measuring the Wiener spectra and the standard density of film were performed.
Both the density and its transmittance are used for the measurement of Wiener spectra. The density, generally used, has some problem that calculation of its arithmetic mean can not be made and that it depends on the aperture size. The fluctuation of the density depends on the avarage density. On the other hand, the transmittance is more suitable than the density as the physical quantity for the measurment of very small area of film. At the density 0.3, the fluctuation of the transmittance becomes the maximum in any type of films.
It is reasonable that, for the measurement Wiener spectra, the density of film is standardized to be 0.3(transmittance is 0.5) and its transmittance is used as the physical quantity.
