@article{oai:jaxa.repo.nii.ac.jp:00033905,
 author = {植村, 恒義 and 歌川, 正博 and Uemura, Tsuneyoshi and Utagawa, Masahiro},
 issue = {11/12},
 journal = {東京大學理工學研究所報告},
 month = {Jun},
 note = {In ultra-highspeed cameras using film drums of large diameters rotating at high speeds, the necessary powers became extraordinarily large as they rotate at high speeds. The authors measured the rotational resistances of the Suhara's Ultra-highspeed Camera of Type II (the diameter of the film drum being 143 cm, the weight about 400 kg) rotating at from 1.000 to 3,000 r.p.m., with various pressures in camera chamber between 100 and 760 mm Hg. Most of the necessary power was found to be consumed for air resistance and the mechanical loss was very small. The measured air resistances followed approximately to the formula given by Th. v. Karman, and it was very efficient for high speed rotation to maintain vacuum in camera chamber., 資料番号: SA0701429000},
 pages = {300--303},
 title = {超高速度カメラ用大型回轉圓盤の空氣摩擦抵抗について},
 volume = {4},
 year = {1951}
}