Ultrasonoscopy
1954 年 23 巻 1 号 p. 27-29
詳細
1954 年 23 巻 1 号 p. 27-29
Powdered foil of aluminum arrange themselves parallel to ultrasonic wave fronts, if they are placed in a ultrasonic field. Using this method found by Pohlman, we could take some photographs of the sonic silhouette of blocks of polystyrol with. air gaps. Making images of the samples by duralumin lens, ultrasonography was also taken.
