๐”– Bobbio Scriptorium
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Ultra-violet transmission of glasses and glass substitutes


Publisher
Elsevier Science
Year
1928
Tongue
English
Weight
241 KB
Volume
205
Category
Article
ISSN
0016-0032

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Plant growth unchanged by ultra-violet g
โœ T.K.C. ๐Ÿ“‚ Article ๐Ÿ“… 1932 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 58 KB

CURRENT TOPICS. 349 cent. of the power required to propel them at speeds above 6o miles per hour. The weight per horse power of the 6oo-volt motors has been reduced from the usual value of 30 to 35 lb. per hp. to 26.8 lb. per hp. Self-ventilation of the motors has been improved by a fan mounted on