The orientation of the grains in a dried
β
L. Silberstein
π
Article
π
1921
π
Elsevier Science
π
English
β 46 KB
THE present lens is an outcome of the war-time activity of the Eastman Kodak Company in lens design and manufacture. A lens of 6 inches aperture and 48 inches focal length has been designed and constructed by the company for the aerial service, which passed the most rigid tests. The present lens is