Volume 31

December 2008
Bulletin of the National Museum of Nature and Science Series E (Physical Sciences & Engineering) Volume 31

Katsuhiro Sasaki and Katsuyuki Kondo

P.1
The Japanese Clocks made by Sukezaemon Tsuda and Their Characteristics（リンクを新しいタブで開きます）(3.7 MB)

Makoto Nakamura and Yoshikazu Tanabe

P.15
Remarks on the Application of Fracture Mechanics on Steels（リンクを新しいタブで開きます）(165.5 KB)

Yoshikazu Tanabe, Akira Sugawara and Shuichi Iwata

P.25
Estimation of Fracture Toughness Independent of the Degree of Plastic Deformation（リンクを新しいタブで開きます）(165.9 KB)

Keiichi Saijo and Takashi Nakajima

P.33
History of the Development of Japanese Binoculars Manufacturing Technology（リンクを新しいタブで開きます）(193.5 KB)