Light transmission through telescopes
📂
Article
📅
1916
🏛
Elsevier Science
🌐
English
⚖ 127 KB
An interesting instance of adopting a process to changed conditions is found in a new apparatus for coating metals with zinc film. The Metals Coating Company of America has developed the Schoop metal spraying process in which zinc wire or other metal wire is melted in a gas flame and projected under