๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

The international association for testing materials


Book ID
108319917
Publisher
Elsevier Science
Year
1906
Tongue
English
Weight
54 KB
Volume
162
Category
Article
ISSN
0016-0032

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International association for testing ma
โœ R.H.O. ๐Ÿ“‚ Article ๐Ÿ“… 1936 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 51 KB

## 773 does not necessarily make for the most efficient results in their use in cathode ray tubes. It is, however, highly important to be able to control very accurately the addition of any foreign or "impure" substances which make the luminescent material produce mere light in the tubes. R. H. O.