𝔖 Bobbio Scriptorium
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An interferometer for testing camera lenses

✍ Scribed by G.F.S.


Publisher
Elsevier Science
Year
1922
Tongue
English
Weight
124 KB
Volume
193
Category
Article
ISSN
0016-0032

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πŸ“œ SIMILAR VOLUMES


Tests of lenses for foundry goggles
πŸ“‚ Article πŸ“… 1915 πŸ› Elsevier Science 🌐 English βš– 67 KB

CURRENT TOPICS. 637 ipated for them in the building of safes. Not only are the plates so extremely hard that they cannot be drilled, but they have a remarkable resistance to the flame of an oxyacetylene lamp. It is estimated that to burn a hole three inches in diameter and 3~ inch thick would requir