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Ferro-cerium and other pyrophoric alloys


Publisher
Elsevier Science
Year
1917
Tongue
English
Weight
68 KB
Volume
183
Category
Article
ISSN
0016-0032

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✦ Synopsis


March, I917.]

CURRENT TOPICS. 369 hole about a quarter of an inch in diameter, we can see the subject through it from any part of the plate area. In this way we practically turn the camera into a finder of the frame type, and this is all tl~at is necessary, actual focussing being neither required nor possible.

Ferro-cerium and Other Pyrophoric Alloys. C.R. ]~OHM.


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